/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:38:03,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:38:03,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:38:03,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:38:03,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:38:03,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:38:03,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:38:03,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:38:03,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:38:03,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:38:03,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:38:03,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:38:03,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:38:03,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:38:03,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:38:03,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:38:03,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:38:03,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:38:03,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:38:03,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:38:03,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:38:03,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:38:03,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:38:03,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:38:03,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:38:03,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:38:03,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:38:03,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:38:03,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 23:38:03,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:38:03,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:38:03,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:38:03,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:38:03,518 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:38:03,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:38:03,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:38:03,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:38:03,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:38:03,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:38:03,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:38:03,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:38:03,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:38:03,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:38:03,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:38:03,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:38:03,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:38:03,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:38:03,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:38:03,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:38:03,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:38:03,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:38:03,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:38:03,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:38:03,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:38:03,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:38:03,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:03,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:38:03,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:38:03,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 23:38:03,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:38:03,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:38:03,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:38:03,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:38:03,863 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:38:03,864 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 23:38:03,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fb2c2bf/79884398caa94135adf1376175c90391/FLAGae4948765 [2020-07-21 23:38:04,436 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:38:04,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 23:38:04,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fb2c2bf/79884398caa94135adf1376175c90391/FLAGae4948765 [2020-07-21 23:38:04,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fb2c2bf/79884398caa94135adf1376175c90391 [2020-07-21 23:38:04,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:38:04,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:38:04,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:38:04,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:38:04,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:38:04,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:38:04" (1/1) ... [2020-07-21 23:38:04,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca65502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:04, skipping insertion in model container [2020-07-21 23:38:04,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:38:04" (1/1) ... [2020-07-21 23:38:04,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:38:04,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:38:05,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:38:05,148 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:38:05,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:38:05,182 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:38:05,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05 WrapperNode [2020-07-21 23:38:05,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:38:05,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:38:05,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:38:05,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:38:05,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05" (1/1) ... [2020-07-21 23:38:05,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05" (1/1) ... [2020-07-21 23:38:05,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05" (1/1) ... [2020-07-21 23:38:05,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05" (1/1) ... [2020-07-21 23:38:05,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05" (1/1) ... [2020-07-21 23:38:05,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05" (1/1) ... [2020-07-21 23:38:05,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05" (1/1) ... [2020-07-21 23:38:05,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:38:05,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:38:05,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:38:05,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:38:05,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:38:05,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:38:05,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:38:05,388 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:38:05,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 23:38:05,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:38:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:38:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:38:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:38:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:38:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:38:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:38:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:38:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:38:05,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:38:05,659 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 23:38:05,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:38:05 BoogieIcfgContainer [2020-07-21 23:38:05,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:38:05,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:38:05,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:38:05,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:38:05,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:38:04" (1/3) ... [2020-07-21 23:38:05,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c060931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:38:05, skipping insertion in model container [2020-07-21 23:38:05,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:05" (2/3) ... [2020-07-21 23:38:05,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c060931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:38:05, skipping insertion in model container [2020-07-21 23:38:05,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:38:05" (3/3) ... [2020-07-21 23:38:05,673 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-07-21 23:38:05,687 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:38:05,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:38:05,716 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:38:05,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:38:05,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:38:05,752 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:38:05,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:38:05,753 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:38:05,753 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:38:05,753 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:38:05,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:38:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-21 23:38:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 23:38:05,794 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:05,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:38:05,797 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash -12471351, now seen corresponding path program 1 times [2020-07-21 23:38:05,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:05,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916216215] [2020-07-21 23:38:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:05,902 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:38:05,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:05,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 23:38:05,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:06,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:38:06,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916216215] [2020-07-21 23:38:06,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:38:06,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:38:06,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645949828] [2020-07-21 23:38:06,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:38:06,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:38:06,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:38:06,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:38:06,056 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-21 23:38:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:38:06,202 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2020-07-21 23:38:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:38:06,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 23:38:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:38:06,217 INFO L225 Difference]: With dead ends: 51 [2020-07-21 23:38:06,217 INFO L226 Difference]: Without dead ends: 19 [2020-07-21 23:38:06,224 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 23:38:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-21 23:38:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-21 23:38:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 23:38:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-21 23:38:06,272 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2020-07-21 23:38:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:38:06,273 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-21 23:38:06,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:38:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-21 23:38:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 23:38:06,275 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:06,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:38:06,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:06,491 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:06,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:06,492 INFO L82 PathProgramCache]: Analyzing trace with hash -793409467, now seen corresponding path program 1 times [2020-07-21 23:38:06,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:06,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112544480] [2020-07-21 23:38:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:06,544 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:38:06,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:06,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 23:38:06,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:06,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:38:06,791 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:38:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:09,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112544480] [2020-07-21 23:38:09,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:38:09,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 23:38:09,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799530226] [2020-07-21 23:38:09,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 23:38:09,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:38:09,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 23:38:09,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2020-07-21 23:38:09,133 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 14 states. [2020-07-21 23:38:17,644 WARN L193 SmtUtils]: Spent 8.27 s on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 23:38:21,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:38:21,938 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-07-21 23:38:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 23:38:21,940 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 23:38:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:38:21,941 INFO L225 Difference]: With dead ends: 40 [2020-07-21 23:38:21,942 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 23:38:21,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=61, Invalid=178, Unknown=1, NotChecked=0, Total=240 [2020-07-21 23:38:21,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 23:38:21,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-21 23:38:21,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-21 23:38:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-21 23:38:21,951 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2020-07-21 23:38:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:38:21,951 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-21 23:38:21,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 23:38:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-21 23:38:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 23:38:21,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:21,953 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 23:38:22,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:22,160 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:22,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:22,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1087804450, now seen corresponding path program 1 times [2020-07-21 23:38:22,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:22,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144397770] [2020-07-21 23:38:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:22,206 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:38:22,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:22,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 23:38:22,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:22,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:38:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:22,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144397770] [2020-07-21 23:38:22,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:38:22,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 23:38:22,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964189279] [2020-07-21 23:38:22,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 23:38:22,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:38:22,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 23:38:22,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-21 23:38:22,308 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 8 states. [2020-07-21 23:38:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:38:22,626 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2020-07-21 23:38:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 23:38:22,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-21 23:38:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:38:22,630 INFO L225 Difference]: With dead ends: 60 [2020-07-21 23:38:22,630 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 23:38:22,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:38:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 23:38:22,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-07-21 23:38:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 23:38:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-07-21 23:38:22,643 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 23 [2020-07-21 23:38:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:38:22,643 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-07-21 23:38:22,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 23:38:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-07-21 23:38:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 23:38:22,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:22,645 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:38:22,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:22,846 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:22,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:22,847 INFO L82 PathProgramCache]: Analyzing trace with hash -563580765, now seen corresponding path program 1 times [2020-07-21 23:38:22,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:22,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486315947] [2020-07-21 23:38:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:22,894 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:38:22,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:22,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 23:38:22,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:23,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:38:23,284 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:38:25,601 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_main_~l~0 4294967296)) (.cse2 (= 0 (mod (mod c_main_~l~0 4294967296) 3))) (.cse0 (+ c_main_~l~0 1))) (or (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296)) (and (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (or (<= 0 .cse1) .cse2)) (and (< .cse1 0) (not .cse2) (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296))) (= (mod .cse0 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 1) 4294967296)))) is different from true [2020-07-21 23:38:42,496 WARN L193 SmtUtils]: Spent 8.41 s on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2020-07-21 23:38:46,743 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 23:39:05,490 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 23:39:18,035 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 23:39:32,641 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 23:39:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 2 times theorem prover too weak. 0 trivial. 3 not checked. [2020-07-21 23:39:32,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486315947] [2020-07-21 23:39:32,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:39:32,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-07-21 23:39:32,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542295771] [2020-07-21 23:39:32,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 23:39:32,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:39:32,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 23:39:32,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=345, Unknown=21, NotChecked=40, Total=506 [2020-07-21 23:39:32,663 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 23 states. [2020-07-21 23:39:37,184 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 2)) (.cse1 (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 1) 4294967296)) (.cse2 (+ c_main_~l~0 1))) (and (or (= (mod .cse0 4294967296) .cse1) (= 0 (mod (mod (mod .cse2 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 (< (mod .cse2 4294967296) (mod c_main_~n~0 4294967296)) (= (mod .cse2 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0) 4294967296))) (or (= 0 (mod (mod (mod .cse0 4294967296) 3) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 3) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 2) 4294967296)))) (= (mod (+ c_main_~l~0 3) 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 2) 4294967296))) (or (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 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)))) (= .cse1 (mod .cse2 4294967296))))) is different from false [2020-07-21 23:40:33,650 WARN L193 SmtUtils]: Spent 31.49 s on a formula simplification that was a NOOP. DAG size: 71 [2020-07-21 23:41:09,657 WARN L193 SmtUtils]: Spent 19.02 s on a formula simplification that was a NOOP. DAG size: 44 [2020-07-21 23:41:18,118 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_main_~n~0 4294967296)) (.cse4 (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 1)) (.cse0 (+ c_main_~l~0 1))) (and (let ((.cse2 (mod c_main_~l~0 4294967296)) (.cse3 (= 0 (mod (mod c_main_~l~0 4294967296) 3)))) (or (< (mod .cse0 4294967296) .cse1) (and (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (or (<= 0 .cse2) .cse3)) (and (< .cse2 0) (not .cse3) (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296))) (= (mod .cse0 4294967296) (mod .cse4 4294967296)))) (or (< (mod c_main_~l~0 4294967296) .cse1) (= (mod c_main_~l~0 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0) 4294967296))) (or (= (mod (+ c_main_~l~0 2) 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 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))))) (or (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 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)))) (= (mod .cse4 4294967296) (mod .cse0 4294967296))))) is different from true [2020-07-21 23:41:20,236 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 1))) (and (let ((.cse1 (mod c_main_~l~0 4294967296)) (.cse2 (= 0 (mod (mod c_main_~l~0 4294967296) 3)))) (or (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296)) (and (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (or (<= 0 .cse1) .cse2)) (and (< .cse1 0) (not .cse2) (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296))) (= (mod .cse0 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 1) 4294967296)))) (or (= (mod (+ c_main_~l~0 2) 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 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))))))) is different from true [2020-07-21 23:41:39,510 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 23:42:09,377 WARN L193 SmtUtils]: Spent 4.30 s on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 23:42:45,416 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 23:44:33,668 WARN L193 SmtUtils]: Spent 57.44 s on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-07-21 23:45:41,610 WARN L193 SmtUtils]: Spent 12.87 s on a formula simplification that was a NOOP. DAG size: 57 [2020-07-21 23:45:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:45:52,287 INFO L93 Difference]: Finished difference Result 86 states and 115 transitions. [2020-07-21 23:45:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 23:45:52,288 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-07-21 23:45:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:45:52,290 INFO L225 Difference]: With dead ends: 86 [2020-07-21 23:45:52,290 INFO L226 Difference]: Without dead ends: 59 [2020-07-21 23:45:52,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 339.3s TimeCoverageRelationStatistics Valid=186, Invalid=616, Unknown=84, NotChecked=236, Total=1122 [2020-07-21 23:45:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-21 23:45:52,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-07-21 23:45:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-21 23:45:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-07-21 23:45:52,305 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 25 [2020-07-21 23:45:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:45:52,305 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-07-21 23:45:52,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 23:45:52,306 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-07-21 23:45:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 23:45:52,307 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:45:52,307 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:45:52,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:45:52,508 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:45:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:45:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash 45927801, now seen corresponding path program 1 times [2020-07-21 23:45:52,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:45:52,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269107726] [2020-07-21 23:45:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:45:52,558 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:45:52,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:45:52,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2020-07-21 23:45:52,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:45:53,010 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:45:53,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:45:53,062 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:46:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 33 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:46:28,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269107726] [2020-07-21 23:46:28,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:46:28,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2020-07-21 23:46:28,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875282129] [2020-07-21 23:46:28,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-21 23:46:28,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:46:28,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-21 23:46:28,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=703, Unknown=16, NotChecked=0, Total=870 [2020-07-21 23:46:28,621 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 30 states. [2020-07-21 23:46:33,700 WARN L193 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 86 DAG size of output: 14 [2020-07-21 23:47:26,835 WARN L193 SmtUtils]: Spent 45.16 s on a formula simplification. DAG size of input: 85 DAG size of output: 29 [2020-07-21 23:48:24,609 WARN L193 SmtUtils]: Spent 50.68 s on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-07-21 23:49:33,126 WARN L193 SmtUtils]: Spent 55.76 s on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2020-07-21 23:50:05,054 WARN L193 SmtUtils]: Spent 14.89 s on a formula simplification that was a NOOP. DAG size: 53 [2020-07-21 23:50:22,264 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-07-21 23:51:09,066 WARN L193 SmtUtils]: Spent 40.02 s on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2020-07-21 23:51:54,450 WARN L193 SmtUtils]: Spent 27.72 s on a formula simplification that was a NOOP. DAG size: 71 [2020-07-21 23:52:28,063 WARN L193 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 27 DAG size of output: 11