/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 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 [2020-07-20 22:48:15,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:48:15,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:48:15,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:48:15,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:48:15,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:48:15,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:48:15,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:48:15,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:48:15,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:48:15,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:48:15,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:48:15,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:48:15,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:48:15,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:48:15,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:48:15,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:48:15,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:48:15,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:48:15,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:48:15,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:48:15,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:48:15,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:48:15,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:48:15,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:48:15,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:48:15,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:48:15,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:48:15,204 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 22:48:15,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:48:15,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:48:15,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:48:15,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:48:15,222 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:48:15,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:48:15,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:48:15,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:48:15,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:48:15,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:48:15,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:48:15,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:48:15,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:48:15,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:48:15,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:48:15,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:48:15,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:48:15,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:48:15,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:48:15,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:48:15,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:48:15,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:48:15,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:48:15,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:48:15,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:48:15,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:48:15,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:48:15,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:48:15,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:48:15,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:48:15,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:48:15,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:48:15,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:48:15,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:48:15,546 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:48:15,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-07-20 22:48:15,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a891ec0/aa0b2f7105ac4e1494d62ea5203968f7/FLAG675876c5b [2020-07-20 22:48:16,171 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:48:16,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-07-20 22:48:16,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a891ec0/aa0b2f7105ac4e1494d62ea5203968f7/FLAG675876c5b [2020-07-20 22:48:16,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a891ec0/aa0b2f7105ac4e1494d62ea5203968f7 [2020-07-20 22:48:16,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:48:16,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:48:16,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:48:16,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:48:16,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:48:16,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:48:16" (1/1) ... [2020-07-20 22:48:16,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa9416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16, skipping insertion in model container [2020-07-20 22:48:16,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:48:16" (1/1) ... [2020-07-20 22:48:16,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:48:16,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:48:16,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:48:16,899 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:48:16,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:48:16,937 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:48:16,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16 WrapperNode [2020-07-20 22:48:16,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:48:16,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:48:16,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:48:16,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:48:16,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16" (1/1) ... [2020-07-20 22:48:16,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16" (1/1) ... [2020-07-20 22:48:16,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16" (1/1) ... [2020-07-20 22:48:16,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16" (1/1) ... [2020-07-20 22:48:17,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16" (1/1) ... [2020-07-20 22:48:17,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16" (1/1) ... [2020-07-20 22:48:17,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16" (1/1) ... [2020-07-20 22:48:17,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:48:17,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:48:17,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:48:17,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:48:17,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16" (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 22:48:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:48:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:48:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 22:48:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 22:48:17,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:48:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:48:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 22:48:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 22:48:17,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 22:48:17,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:48:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:48:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:48:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:48:17,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:48:17,410 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:48:17,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:48:17 BoogieIcfgContainer [2020-07-20 22:48:17,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:48:17,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:48:17,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:48:17,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:48:17,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:48:16" (1/3) ... [2020-07-20 22:48:17,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfad10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:48:17, skipping insertion in model container [2020-07-20 22:48:17,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:48:16" (2/3) ... [2020-07-20 22:48:17,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfad10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:48:17, skipping insertion in model container [2020-07-20 22:48:17,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:48:17" (3/3) ... [2020-07-20 22:48:17,429 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-07-20 22:48:17,442 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:48:17,464 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:48:17,499 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:48:17,528 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:48:17,528 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:48:17,528 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:48:17,529 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:48:17,529 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:48:17,529 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:48:17,530 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:48:17,530 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:48:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-20 22:48:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 22:48:17,563 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:48:17,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:48:17,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:48:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:48:17,570 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-07-20 22:48:17,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:48:17,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902520000] [2020-07-20 22:48:17,579 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 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 22:48:17,644 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:48:17,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:48:17,648 WARN L261 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 22:48:17,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:48:17,787 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 22:48:17,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:48:17,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902520000] [2020-07-20 22:48:17,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:48:17,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:48:17,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174513448] [2020-07-20 22:48:17,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:48:17,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:48:17,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:48:17,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:48:17,829 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-07-20 22:48:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:48:17,994 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2020-07-20 22:48:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:48:17,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-20 22:48:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:48:18,009 INFO L225 Difference]: With dead ends: 53 [2020-07-20 22:48:18,010 INFO L226 Difference]: Without dead ends: 20 [2020-07-20 22:48:18,015 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 [2020-07-20 22:48:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-20 22:48:18,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-20 22:48:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-20 22:48:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-07-20 22:48:18,061 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2020-07-20 22:48:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:48:18,061 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-07-20 22:48:18,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:48:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-07-20 22:48:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 22:48:18,063 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:48:18,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:48:18,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:48:18,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:48:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:48:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-07-20 22:48:18,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:48:18,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870752080] [2020-07-20 22:48:18,267 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 22:48:18,333 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:48:18,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:48:18,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 22:48:18,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:48:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:48:18,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:48:18,663 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:48:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:48:18,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870752080] [2020-07-20 22:48:18,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:48:18,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-20 22:48:18,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110463654] [2020-07-20 22:48:18,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 22:48:18,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:48:18,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 22:48:18,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-20 22:48:18,992 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 14 states. [2020-07-20 22:48:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:48:25,565 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2020-07-20 22:48:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 22:48:25,565 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-20 22:48:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:48:25,567 INFO L225 Difference]: With dead ends: 43 [2020-07-20 22:48:25,567 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 22:48:25,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-20 22:48:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 22:48:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-20 22:48:25,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 22:48:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-07-20 22:48:25,576 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2020-07-20 22:48:25,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:48:25,576 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-07-20 22:48:25,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 22:48:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-07-20 22:48:25,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 22:48:25,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:48:25,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:48:25,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:48:25,794 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:48:25,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:48:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 1 times [2020-07-20 22:48:25,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:48:25,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307503088] [2020-07-20 22:48:25,796 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 22:48:25,839 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:48:25,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:48:25,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 22:48:25,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:48:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:48:25,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:48:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:48:34,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307503088] [2020-07-20 22:48:34,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:48:34,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 22:48:34,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501527343] [2020-07-20 22:48:34,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 22:48:34,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:48:34,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 22:48:34,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=31, Unknown=4, NotChecked=0, Total=56 [2020-07-20 22:48:34,331 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-07-20 22:48:36,490 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 22:49:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:49:42,930 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2020-07-20 22:49:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:49:42,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-07-20 22:49:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:49:42,934 INFO L225 Difference]: With dead ends: 54 [2020-07-20 22:49:42,935 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 22:49:42,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=23, Invalid=32, Unknown=5, NotChecked=12, Total=72 [2020-07-20 22:49:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 22:49:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-20 22:49:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 22:49:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-07-20 22:49:42,958 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 24 [2020-07-20 22:49:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:49:42,959 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-07-20 22:49:42,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 22:49:42,959 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-07-20 22:49:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 22:49:42,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:49:42,961 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] [2020-07-20 22:49:43,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:49:43,171 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:49:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:49:43,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-07-20 22:49:43,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:49:43,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590924430] [2020-07-20 22:49:43,173 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 22:49:43,254 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:49:43,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:49:43,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-20 22:49:43,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:49:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:49:43,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:49:43,653 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:49:47,984 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 1)) (.cse1 (= 0 (mod (mod c_main_~l~0 4294967296) 5))) (.cse2 (mod c_main_~l~0 4294967296))) (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)) (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296)) (and (or .cse1 (<= 0 .cse2)) (= (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296) 0)) (and (not .cse1) (< .cse2 0) (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 5) 4294967291) 4294967296))))) is different from true [2020-07-20 22:49:50,073 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_main_~l~0 4294967296))) (let ((.cse1 (<= 0 .cse7)) (.cse5 (< .cse7 0)) (.cse0 (= 0 (mod (mod c_main_~l~0 4294967296) 5))) (.cse2 (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 1) 4294967296) (mod (+ c_main_~l~0 1) 4294967296))) (.cse3 (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 5) 4294967291) 4294967296))) (.cse4 (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))))) (.cse6 (= (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296) 0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse2 .cse5 .cse4 .cse6) (or .cse0 .cse1 .cse2 .cse5 .cse4) (or (not .cse0) .cse2 .cse4 .cse6) (or .cse2 .cse3 .cse4 .cse6)))) is different from false [2020-07-20 22:49:52,184 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (+ c_main_~l~0 1))) (let ((.cse7 (mod .cse6 4294967296))) (let ((.cse0 (= 0 (mod (mod .cse6 4294967296) 5))) (.cse3 (<= 0 .cse7)) (.cse5 (< .cse7 0)) (.cse1 (= 0 (mod (mod (mod .cse6 4294967296) 5) 4294967296))) (.cse4 (= 0 (mod (+ (mod (mod .cse6 4294967296) 5) 4294967291) 4294967296))) (.cse2 (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 1) 4294967296) (mod (+ c_main_~l~0 2) 4294967296)))) (and (or (not .cse0) (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)))) .cse1 .cse2) (or (forall ((v_prenex_2 Int)) (or (<= (mod v_prenex_2 4294967296) (mod (+ c_main_~l~0 1) 4294967296)) (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_2 4294967296)))) .cse0 .cse3 .cse4 .cse2) (or .cse5 (forall ((v_prenex_3 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_3 4294967296)) (<= (mod v_prenex_3 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) .cse0 .cse3 .cse2) (or .cse5 (forall ((v_prenex_4 Int)) (or (<= (mod v_prenex_4 4294967296) (mod (+ c_main_~l~0 1) 4294967296)) (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_4 4294967296)))) .cse1 .cse2) (or .cse1 .cse4 .cse2 (forall ((v_prenex_1 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_1 4294967296)) (<= (mod v_prenex_1 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))))))) is different from false [2020-07-20 22:49:54,300 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (+ c_main_~l~0 1))) (let ((.cse7 (mod .cse6 4294967296))) (let ((.cse2 (= 0 (mod (+ (mod (mod .cse6 4294967296) 5) 4294967291) 4294967296))) (.cse3 (< .cse7 0)) (.cse5 (<= 0 .cse7)) (.cse0 (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 2) 4294967296) (mod (+ c_main_~l~0 2) 4294967296))) (.cse4 (= 0 (mod (mod .cse6 4294967296) 5))) (.cse1 (= 0 (mod (mod (mod .cse6 4294967296) 5) 4294967296)))) (and (or .cse0 .cse1 .cse2 (forall ((v_prenex_1 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_1 4294967296)) (<= (mod v_prenex_1 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))) (or .cse0 .cse3 (forall ((v_prenex_4 Int)) (or (<= (mod v_prenex_4 4294967296) (mod (+ c_main_~l~0 1) 4294967296)) (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_4 4294967296)))) .cse1) (or .cse0 (forall ((v_prenex_2 Int)) (or (<= (mod v_prenex_2 4294967296) (mod (+ c_main_~l~0 1) 4294967296)) (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_2 4294967296)))) .cse4 .cse5 .cse2) (or .cse0 .cse3 (forall ((v_prenex_3 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_3 4294967296)) (<= (mod v_prenex_3 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) .cse4 .cse5) (or .cse0 (not .cse4) (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)))) .cse1))))) is different from false [2020-07-20 22:50:13,206 WARN L193 SmtUtils]: Spent 10.46 s on a formula simplification. DAG size of input: 104 DAG size of output: 38 [2020-07-20 22:50:19,503 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 38 [2020-07-20 22:50:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2020-07-20 22:50:19,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590924430] [2020-07-20 22:50:19,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:50:19,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-07-20 22:50:19,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087264258] [2020-07-20 22:50:19,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 22:50:19,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:50:19,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 22:50:19,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=268, Unknown=11, NotChecked=148, Total=506 [2020-07-20 22:50:19,533 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 23 states. [2020-07-20 22:50:55,635 WARN L193 SmtUtils]: Spent 35.27 s on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-07-20 22:51:45,448 WARN L193 SmtUtils]: Spent 35.23 s on a formula simplification. DAG size of input: 98 DAG size of output: 51 [2020-07-20 22:52:31,088 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-07-20 22:52:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:52:53,976 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2020-07-20 22:52:53,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 22:52:53,977 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27 [2020-07-20 22:52:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:52:53,979 INFO L225 Difference]: With dead ends: 70 [2020-07-20 22:52:53,979 INFO L226 Difference]: Without dead ends: 51 [2020-07-20 22:52:53,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 138.5s TimeCoverageRelationStatistics Valid=117, Invalid=426, Unknown=25, NotChecked=188, Total=756 [2020-07-20 22:52:53,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-20 22:52:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-07-20 22:52:53,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-20 22:52:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2020-07-20 22:52:53,989 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 27 [2020-07-20 22:52:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:52:53,989 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2020-07-20 22:52:53,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 22:52:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2020-07-20 22:52:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 22:52:53,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:52:53,991 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] [2020-07-20 22:52:54,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:52:54,205 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:52:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:52:54,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1204685030, now seen corresponding path program 1 times [2020-07-20 22:52:54,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:52:54,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824684805] [2020-07-20 22:52:54,207 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 22:52:54,275 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:52:54,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:52:54,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 22:52:54,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:52:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:52:54,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:53:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:53:06,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824684805] [2020-07-20 22:53:06,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:53:06,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-20 22:53:06,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865088876] [2020-07-20 22:53:06,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 22:53:06,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:53:06,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 22:53:06,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=85, Unknown=6, NotChecked=0, Total=132 [2020-07-20 22:53:06,849 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand 12 states. [2020-07-20 22:53:09,036 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 3) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 5) 4294967296))) is different from false [2020-07-20 22:53:11,099 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 3) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 5) 4294967296))) is different from false [2020-07-20 22:53:15,240 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 3) 4294967296) 5) 4294967296))) is different from false [2020-07-20 22:53:25,661 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 3) 4294967296) 5) 4294967296))) is different from false [2020-07-20 22:54:07,151 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 22:54:22,363 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 22:54:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:54:52,677 INFO L93 Difference]: Finished difference Result 90 states and 129 transitions. [2020-07-20 22:54:52,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 22:54:52,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-07-20 22:54:52,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:54:52,864 INFO L225 Difference]: With dead ends: 90 [2020-07-20 22:54:52,864 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 22:54:52,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=53, Invalid=91, Unknown=12, NotChecked=150, Total=306 [2020-07-20 22:54:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 22:54:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-07-20 22:54:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 22:54:52,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions. [2020-07-20 22:54:52,877 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 93 transitions. Word has length 35 [2020-07-20 22:54:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:54:52,878 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 93 transitions. [2020-07-20 22:54:52,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 22:54:52,878 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 93 transitions. [2020-07-20 22:54:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 22:54:52,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:54:52,880 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:54:53,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:54:53,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:54:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:54:53,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1013904368, now seen corresponding path program 1 times [2020-07-20 22:54:53,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:54:53,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069597130] [2020-07-20 22:54:53,090 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