/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/sumt9.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:49:50,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:49:50,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:49:50,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:49:50,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:49:50,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:49:50,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:49:50,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:49:50,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:49:50,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:49:50,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:49:50,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:49:50,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:49:50,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:49:50,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:49:50,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:49:50,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:49:50,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:49:50,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:49:50,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:49:50,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:49:50,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:49:50,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:49:50,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:49:50,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:49:50,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:49:50,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:49:50,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:49:50,548 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 22:49:50,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:49:50,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:49:50,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:49:50,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:49:50,584 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:49:50,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:49:50,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:49:50,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:49:50,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:49:50,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:49:50,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:49:50,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:49:50,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:49:50,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:49:50,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:49:50,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:49:50,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:49:50,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:49:50,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:49:50,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:49:50,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:49:50,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:49:50,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:49:50,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:49:50,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:49:50,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:49:50,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:49:50,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:49:50,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:49:50,592 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 22:49:50,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:49:50,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:49:50,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:49:50,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:49:50,925 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:49:50,925 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt9.c [2020-07-20 22:49:50,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11bda105b/655744f2fda943e0826ccb3327445e2c/FLAG6dc2133f4 [2020-07-20 22:49:51,411 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:49:51,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt9.c [2020-07-20 22:49:51,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11bda105b/655744f2fda943e0826ccb3327445e2c/FLAG6dc2133f4 [2020-07-20 22:49:51,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11bda105b/655744f2fda943e0826ccb3327445e2c [2020-07-20 22:49:51,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:49:51,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:49:51,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:49:51,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:49:51,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:49:51,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:49:51" (1/1) ... [2020-07-20 22:49:51,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6438a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:51, skipping insertion in model container [2020-07-20 22:49:51,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:49:51" (1/1) ... [2020-07-20 22:49:51,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:49:51,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:49:52,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:49:52,067 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:49:52,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:49:52,106 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:49:52,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52 WrapperNode [2020-07-20 22:49:52,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:49:52,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:49:52,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:49:52,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:49:52,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52" (1/1) ... [2020-07-20 22:49:52,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52" (1/1) ... [2020-07-20 22:49:52,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52" (1/1) ... [2020-07-20 22:49:52,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52" (1/1) ... [2020-07-20 22:49:52,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52" (1/1) ... [2020-07-20 22:49:52,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52" (1/1) ... [2020-07-20 22:49:52,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52" (1/1) ... [2020-07-20 22:49:52,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:49:52,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:49:52,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:49:52,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:49:52,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52" (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 22:49:52,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:49:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:49:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 22:49:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 22:49:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:49:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:49:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 22:49:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 22:49:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 22:49:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:49:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:49:52,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:49:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:49:52,594 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:49:52,594 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:49:52,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:49:52 BoogieIcfgContainer [2020-07-20 22:49:52,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:49:52,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:49:52,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:49:52,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:49:52,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:49:51" (1/3) ... [2020-07-20 22:49:52,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d52c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:49:52, skipping insertion in model container [2020-07-20 22:49:52,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:52" (2/3) ... [2020-07-20 22:49:52,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d52c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:49:52, skipping insertion in model container [2020-07-20 22:49:52,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:49:52" (3/3) ... [2020-07-20 22:49:52,606 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt9.c [2020-07-20 22:49:52,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:49:52,625 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:49:52,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:49:52,664 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:49:52,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:49:52,665 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:49:52,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:49:52,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:49:52,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:49:52,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:49:52,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:49:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-20 22:49:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 22:49:52,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:49:52,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:49:52,693 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:49:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:49:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash -684006215, now seen corresponding path program 1 times [2020-07-20 22:49:52,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:49:52,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881730594] [2020-07-20 22:49:52,707 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 22:49:52,865 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:49:52,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:49:52,869 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 22:49:52,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:49:53,073 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 22:49:53,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:49:53,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881730594] [2020-07-20 22:49:53,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:49:53,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 22:49:53,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310365933] [2020-07-20 22:49:53,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:49:53,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:49:53,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:49:53,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:49:53,101 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2020-07-20 22:49:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:49:53,356 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions. [2020-07-20 22:49:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:49:53,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-20 22:49:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:49:53,370 INFO L225 Difference]: With dead ends: 74 [2020-07-20 22:49:53,371 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 22:49:53,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 22:49:53,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 22:49:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 22:49:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 22:49:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-20 22:49:53,423 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 14 [2020-07-20 22:49:53,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:49:53,424 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-20 22:49:53,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:49:53,425 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-20 22:49:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 22:49:53,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:49:53,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:49:53,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:49:53,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:49:53,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:49:53,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1563298987, now seen corresponding path program 1 times [2020-07-20 22:49:53,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:49:53,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692437200] [2020-07-20 22:49:53,645 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 22:49:53,757 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:49:53,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:49:53,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-20 22:49:53,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:49:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:49:53,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:49:54,020 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:49:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 22:49:54,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692437200] [2020-07-20 22:49:54,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 22:49:54,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2020-07-20 22:49:54,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121833403] [2020-07-20 22:49:54,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:49:54,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:49:54,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:49:54,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-20 22:49:54,183 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-07-20 22:50:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:50:15,151 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2020-07-20 22:50:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:50:15,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-20 22:50:15,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:50:15,153 INFO L225 Difference]: With dead ends: 58 [2020-07-20 22:50:15,154 INFO L226 Difference]: Without dead ends: 56 [2020-07-20 22:50:15,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-20 22:50:15,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-20 22:50:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-20 22:50:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 22:50:15,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-07-20 22:50:15,165 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 29 [2020-07-20 22:50:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:50:15,166 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-07-20 22:50:15,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:50:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-07-20 22:50:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-20 22:50:15,167 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:50:15,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:50:15,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:50:15,383 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:50:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:50:15,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1477789953, now seen corresponding path program 1 times [2020-07-20 22:50:15,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:50:15,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243530923] [2020-07-20 22:50:15,387 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 22:50:15,468 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:50:15,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:50:15,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 22:50:15,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:50:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 22:50:15,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:50:15,634 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:50:21,917 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:50:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 10 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 22:50:34,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243530923] [2020-07-20 22:50:34,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:50:34,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2020-07-20 22:50:34,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535410900] [2020-07-20 22:50:34,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 22:50:34,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:50:34,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 22:50:34,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=36, Unknown=9, NotChecked=0, Total=72 [2020-07-20 22:50:34,435 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand 9 states. [2020-07-20 22:50:36,663 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 9) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 2))) (or (= 0 (mod (mod (mod .cse1 4294967296) 9) 4294967296)) (< 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:50:38,753 WARN L838 $PredicateComparison]: unable to prove that (and (or (= 0 (mod (mod (mod c_main_~l~0 4294967296) 9) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 9) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:50:40,822 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 9) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from false [2020-07-20 22:52:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:52:47,908 INFO L93 Difference]: Finished difference Result 107 states and 152 transitions. [2020-07-20 22:52:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 22:52:47,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-07-20 22:52:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:52:47,913 INFO L225 Difference]: With dead ends: 107 [2020-07-20 22:52:47,913 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 22:52:47,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=12, NotChecked=48, Total=132 [2020-07-20 22:52:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 22:52:47,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-07-20 22:52:47,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-20 22:52:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2020-07-20 22:52:47,944 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 39 [2020-07-20 22:52:47,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:52:47,944 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2020-07-20 22:52:47,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 22:52:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2020-07-20 22:52:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 22:52:47,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:52:47,947 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:52:48,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:52:48,163 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:52:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:52:48,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1143083323, now seen corresponding path program 1 times [2020-07-20 22:52:48,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:52:48,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623517244] [2020-07-20 22:52:48,165 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