/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:30:49,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:30:49,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:30:49,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:30:49,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:30:49,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:30:49,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:30:49,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:30:49,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:30:49,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:30:49,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:30:49,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:30:49,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:30:49,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:30:49,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:30:49,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:30:49,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:30:49,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:30:49,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:30:49,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:30:49,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:30:49,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:30:49,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:30:49,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:30:49,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 14:30:49,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:30:49,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:30:49,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:30:49,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 14:30:49,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:30:49,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:30:49,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:30:49,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:30:49,363 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:30:49,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:30:49,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:30:49,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:30:49,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:30:49,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:30:49,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:30:49,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:30:49,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:30:49,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:30:49,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:30:49,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:30:49,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:30:49,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:30:49,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:30:49,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:30:49,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:30:49,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:30:49,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:30:49,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:30:49,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:30:49,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:30:49,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:49,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:30:49,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:30:49,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 14:30:49,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:30:49,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:30:49,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:30:49,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:30:49,706 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:30:49,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 14:30:49,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97a35d122/aeea630f0ecf4b80af7e621451d49a76/FLAG5cff99f67 [2020-07-21 14:30:50,229 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:30:50,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 14:30:50,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97a35d122/aeea630f0ecf4b80af7e621451d49a76/FLAG5cff99f67 [2020-07-21 14:30:50,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97a35d122/aeea630f0ecf4b80af7e621451d49a76 [2020-07-21 14:30:50,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:30:50,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:30:50,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:30:50,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:30:50,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:30:50,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7808e504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50, skipping insertion in model container [2020-07-21 14:30:50,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:30:50,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:30:50,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:30:50,837 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:30:50,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:30:50,867 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:30:50,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50 WrapperNode [2020-07-21 14:30:50,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:30:50,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:30:50,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:30:50,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:30:50,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... [2020-07-21 14:30:50,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:30:50,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:30:50,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:30:50,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:30:50,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:30:51,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:30:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:30:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:30:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:30:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:30:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:30:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:30:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:30:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:30:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 14:30:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:30:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:30:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:30:51,235 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:30:51,236 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 14:30:51,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:30:51 BoogieIcfgContainer [2020-07-21 14:30:51,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:30:51,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:30:51,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:30:51,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:30:51,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:30:50" (1/3) ... [2020-07-21 14:30:51,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1fa8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:30:51, skipping insertion in model container [2020-07-21 14:30:51,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:50" (2/3) ... [2020-07-21 14:30:51,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1fa8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:30:51, skipping insertion in model container [2020-07-21 14:30:51,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:30:51" (3/3) ... [2020-07-21 14:30:51,247 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-07-21 14:30:51,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:30:51,265 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:30:51,280 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:30:51,305 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:30:51,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:30:51,305 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:30:51,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:30:51,306 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:30:51,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:30:51,306 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:30:51,306 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:30:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-21 14:30:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 14:30:51,341 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:51,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:51,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:51,351 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-07-21 14:30:51,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:51,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859908186] [2020-07-21 14:30:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:51,466 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:51,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:51,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 14:30:51,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:51,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:51,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859908186] [2020-07-21 14:30:51,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:51,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 14:30:51,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107224930] [2020-07-21 14:30:51,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 14:30:51,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:51,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 14:30:51,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:30:51,513 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-21 14:30:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:51,532 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-07-21 14:30:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 14:30:51,533 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 14:30:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:51,540 INFO L225 Difference]: With dead ends: 35 [2020-07-21 14:30:51,540 INFO L226 Difference]: Without dead ends: 16 [2020-07-21 14:30:51,543 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 14:30:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-21 14:30:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-21 14:30:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 14:30:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-21 14:30:51,574 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-21 14:30:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:51,574 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-21 14:30:51,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 14:30:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-21 14:30:51,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 14:30:51,576 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:51,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:51,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:51,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:51,793 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-07-21 14:30:51,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:51,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250187349] [2020-07-21 14:30:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:51,835 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:51,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:51,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 14:30:51,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:51,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:51,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250187349] [2020-07-21 14:30:51,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:51,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:30:51,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075088239] [2020-07-21 14:30:51,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:30:51,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:51,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:30:51,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:30:51,930 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-07-21 14:30:52,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:52,001 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-21 14:30:52,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:30:52,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 14:30:52,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:52,005 INFO L225 Difference]: With dead ends: 30 [2020-07-21 14:30:52,005 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 14:30:52,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:30:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 14:30:52,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 14:30:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 14:30:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-21 14:30:52,013 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-07-21 14:30:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:52,013 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-21 14:30:52,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:30:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-21 14:30:52,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 14:30:52,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:52,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:52,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:52,216 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-07-21 14:30:52,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:52,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214015529] [2020-07-21 14:30:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:52,254 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:52,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:52,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 14:30:52,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:52,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:30:52,469 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:30:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:52,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214015529] [2020-07-21 14:30:52,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:30:52,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 14:30:52,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78520190] [2020-07-21 14:30:52,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 14:30:52,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:52,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 14:30:52,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-21 14:30:52,692 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 14 states. [2020-07-21 14:30:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:57,083 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-21 14:30:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 14:30:57,084 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 14:30:57,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:57,085 INFO L225 Difference]: With dead ends: 37 [2020-07-21 14:30:57,085 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 14:30:57,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-21 14:30:57,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 14:30:57,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 14:30:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 14:30:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-07-21 14:30:57,098 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2020-07-21 14:30:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:57,098 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-07-21 14:30:57,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 14:30:57,098 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-21 14:30:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 14:30:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:57,102 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:57,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:57,317 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:57,318 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 1 times [2020-07-21 14:30:57,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:57,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036254378] [2020-07-21 14:30:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:57,357 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:57,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:57,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 14:30:57,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:57,382 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 14:30:57,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:30:59,559 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 14:30:59,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036254378] [2020-07-21 14:30:59,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:30:59,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 14:30:59,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654592900] [2020-07-21 14:30:59,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 14:30:59,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:59,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 14:30:59,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2020-07-21 14:30:59,563 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 8 states. [2020-07-21 14:31:01,724 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 3) 4294967296))) is different from false [2020-07-21 14:31:08,053 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 3) 4294967296))) is different from false [2020-07-21 14:31:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:31:20,626 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2020-07-21 14:31:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 14:31:20,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-21 14:31:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:31:20,630 INFO L225 Difference]: With dead ends: 48 [2020-07-21 14:31:20,630 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 14:31:20,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=23, Invalid=38, Unknown=3, NotChecked=26, Total=90 [2020-07-21 14:31:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 14:31:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-07-21 14:31:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 14:31:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-07-21 14:31:20,640 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 22 [2020-07-21 14:31:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:31:20,640 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-07-21 14:31:20,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 14:31:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-07-21 14:31:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 14:31:20,641 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:31:20,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:31:20,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:31:20,843 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:31:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:31:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-07-21 14:31:20,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:31:20,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116480023] [2020-07-21 14:31:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:31:20,906 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:31:20,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:31:20,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 14:31:20,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:31:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:31:21,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:31:21,223 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:31:25,636 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 1)) (.cse2 (= 0 (mod (mod c_main_~l~0 4294967296) 3))) (.cse1 (mod c_main_~l~0 4294967296))) (or (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296) (mod .cse0 4294967296)) (and (or (<= 0 .cse1) .cse2) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296)) (and (not .cse2) (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296)) (< .cse1 0)))) is different from true [2020-07-21 14:31:55,122 WARN L193 SmtUtils]: Spent 8.45 s on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-07-21 14:32:07,728 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 14:32:18,222 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 14:32:28,736 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 14:32:43,394 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 14:32:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 2 times theorem prover too weak. 0 trivial. 2 not checked. [2020-07-21 14:32:43,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116480023] [2020-07-21 14:32:43,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:32:43,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-07-21 14:32:43,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749768522] [2020-07-21 14:32:43,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 14:32:43,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:32:43,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 14:32:43,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=342, Unknown=26, NotChecked=40, Total=506 [2020-07-21 14:32:43,415 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 23 states. [2020-07-21 14:32:45,797 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296)) (.cse0 (+ c_main_~l~0 1)) (.cse1 (+ c_main_~l~0 2))) (and (or (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0) 4294967296) (mod .cse0 4294967296)) (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296))) (or (= (mod .cse1 4294967296) .cse2) (= 0 (mod (mod (mod .cse0 4294967296) 3) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))) (or (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (= .cse2 (mod .cse0 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296))))) (or (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 2) 4294967296)) (< (mod (+ c_main_~l~0 3) 4294967296) (mod main_~n~0 4294967296)))) (= 0 (mod (mod (mod .cse1 4294967296) 3) 4294967296)) (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 2) 4294967296) (mod (+ c_main_~l~0 3) 4294967296))))) is different from false [2020-07-21 14:34:05,494 WARN L193 SmtUtils]: Spent 1.19 m on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-07-21 14:34:11,990 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 1))) (and (or (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296) (mod .cse0 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296))))) (or (= (mod (+ c_main_~l~0 2) 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 2) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 3) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))) (= (mod c_main_~l~0 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0) 4294967296)))) is different from false [2020-07-21 14:36:38,955 WARN L193 SmtUtils]: Spent 1.91 m on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-07-21 14:36:45,345 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296)) (.cse1 (+ c_main_~l~0 1))) (and (or (= (mod (+ c_main_~l~0 2) 4294967296) .cse0) (= 0 (mod (mod (mod .cse1 4294967296) 3) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))) (or (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (= .cse0 (mod .cse1 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296))))))) is different from true [2020-07-21 14:38:53,326 WARN L193 SmtUtils]: Spent 1.49 m on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-07-21 14:39:06,273 WARN L193 SmtUtils]: Spent 4.32 s on a formula simplification that was a NOOP. DAG size: 49 [2020-07-21 14:40:01,914 WARN L193 SmtUtils]: Spent 40.74 s on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-07-21 14:40:38,171 WARN L193 SmtUtils]: Spent 12.85 s on a formula simplification that was a NOOP. DAG size: 47 [2020-07-21 14:41:01,722 WARN L193 SmtUtils]: Spent 6.48 s on a formula simplification that was a NOOP. DAG size: 56 [2020-07-21 14:41:56,901 WARN L193 SmtUtils]: Spent 14.92 s on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 14:42:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:42:35,508 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2020-07-21 14:42:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-21 14:42:35,509 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2020-07-21 14:42:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:42:35,510 INFO L225 Difference]: With dead ends: 65 [2020-07-21 14:42:35,510 INFO L226 Difference]: Without dead ends: 46 [2020-07-21 14:42:35,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 585.3s TimeCoverageRelationStatistics Valid=203, Invalid=654, Unknown=89, NotChecked=244, Total=1190 [2020-07-21 14:42:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-21 14:42:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-07-21 14:42:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 14:42:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-07-21 14:42:35,519 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 23 [2020-07-21 14:42:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:42:35,520 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-07-21 14:42:35,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 14:42:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-07-21 14:42:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 14:42:35,521 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:42:35,521 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:42:35,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:42:35,736 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:42:35,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:42:35,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1031065109, now seen corresponding path program 2 times [2020-07-21 14:42:35,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:42:35,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122695804] [2020-07-21 14:42:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in