/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/sumt8.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 02:09:08,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 02:09:08,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 02:09:08,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 02:09:08,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 02:09:08,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 02:09:08,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 02:09:08,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 02:09:08,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 02:09:08,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 02:09:08,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 02:09:08,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 02:09:08,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 02:09:08,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 02:09:08,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 02:09:08,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 02:09:08,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 02:09:08,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 02:09:08,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 02:09:08,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 02:09:08,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 02:09:08,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 02:09:08,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 02:09:08,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 02:09:08,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 02:09:08,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 02:09:08,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 02:09:08,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 02:09:08,632 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 02:09:08,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 02:09:08,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 02:09:08,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 02:09:08,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 02:09:08,649 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 02:09:08,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 02:09:08,650 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 02:09:08,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 02:09:08,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 02:09:08,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 02:09:08,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 02:09:08,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 02:09:08,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 02:09:08,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 02:09:08,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 02:09:08,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 02:09:08,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 02:09:08,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 02:09:08,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 02:09:08,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 02:09:08,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 02:09:08,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:09:08,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 02:09:08,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 02:09:08,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 02:09:08,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 02:09:08,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:09:08,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 02:09:08,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 02:09:08,654 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 02:09:08,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 02:09:08,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 02:09:08,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 02:09:08,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 02:09:08,997 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 02:09:08,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt8.c [2020-07-21 02:09:09,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5487b8107/c9ee2b0adfd246e3aa8fc9c01dde35c0/FLAG97aa9cfaa [2020-07-21 02:09:09,631 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 02:09:09,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt8.c [2020-07-21 02:09:09,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5487b8107/c9ee2b0adfd246e3aa8fc9c01dde35c0/FLAG97aa9cfaa [2020-07-21 02:09:09,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5487b8107/c9ee2b0adfd246e3aa8fc9c01dde35c0 [2020-07-21 02:09:09,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 02:09:09,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 02:09:09,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 02:09:09,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 02:09:09,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 02:09:09,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:09:09" (1/1) ... [2020-07-21 02:09:09,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0a335d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:09, skipping insertion in model container [2020-07-21 02:09:09,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:09:09" (1/1) ... [2020-07-21 02:09:10,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 02:09:10,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 02:09:10,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:09:10,284 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 02:09:10,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:09:10,327 INFO L208 MainTranslator]: Completed translation [2020-07-21 02:09:10,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10 WrapperNode [2020-07-21 02:09:10,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 02:09:10,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 02:09:10,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 02:09:10,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 02:09:10,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10" (1/1) ... [2020-07-21 02:09:10,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10" (1/1) ... [2020-07-21 02:09:10,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10" (1/1) ... [2020-07-21 02:09:10,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10" (1/1) ... [2020-07-21 02:09:10,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10" (1/1) ... [2020-07-21 02:09:10,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10" (1/1) ... [2020-07-21 02:09:10,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10" (1/1) ... [2020-07-21 02:09:10,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 02:09:10,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 02:09:10,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 02:09:10,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 02:09:10,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10" (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 02:09:10,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 02:09:10,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 02:09:10,546 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 02:09:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 02:09:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 02:09:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 02:09:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 02:09:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 02:09:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 02:09:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 02:09:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 02:09:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 02:09:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 02:09:10,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 02:09:10,857 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 02:09:10,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:09:10 BoogieIcfgContainer [2020-07-21 02:09:10,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 02:09:10,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 02:09:10,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 02:09:10,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 02:09:10,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:09:09" (1/3) ... [2020-07-21 02:09:10,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ebe2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:09:10, skipping insertion in model container [2020-07-21 02:09:10,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10" (2/3) ... [2020-07-21 02:09:10,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ebe2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:09:10, skipping insertion in model container [2020-07-21 02:09:10,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:09:10" (3/3) ... [2020-07-21 02:09:10,873 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt8.c [2020-07-21 02:09:10,888 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 02:09:10,901 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 02:09:10,925 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 02:09:10,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 02:09:10,963 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 02:09:10,963 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 02:09:10,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 02:09:10,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 02:09:10,964 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 02:09:10,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 02:09:10,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 02:09:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-21 02:09:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 02:09:11,002 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:09:11,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:09:11,004 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:09:11,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:09:11,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1078562183, now seen corresponding path program 1 times [2020-07-21 02:09:11,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:09:11,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447367410] [2020-07-21 02:09:11,028 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 02:09:11,173 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:09:11,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:09:11,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 02:09:11,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:09:11,424 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 02:09:11,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:09:11,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447367410] [2020-07-21 02:09:11,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:09:11,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 02:09:11,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383917318] [2020-07-21 02:09:11,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 02:09:11,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:09:11,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 02:09:11,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 02:09:11,454 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2020-07-21 02:09:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:09:11,717 INFO L93 Difference]: Finished difference Result 71 states and 105 transitions. [2020-07-21 02:09:11,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 02:09:11,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-21 02:09:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:09:11,731 INFO L225 Difference]: With dead ends: 71 [2020-07-21 02:09:11,731 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 02:09:11,736 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 [2020-07-21 02:09:11,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 02:09:11,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-21 02:09:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 02:09:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-07-21 02:09:11,787 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 14 [2020-07-21 02:09:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:09:11,787 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-07-21 02:09:11,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 02:09:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-07-21 02:09:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 02:09:11,789 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:09:11,789 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] [2020-07-21 02:09:12,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:09:12,004 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:09:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:09:12,006 INFO L82 PathProgramCache]: Analyzing trace with hash -858115487, now seen corresponding path program 1 times [2020-07-21 02:09:12,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:09:12,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842382423] [2020-07-21 02:09:12,007 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 02:09:12,077 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:09:12,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:09:12,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 02:09:12,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:09:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:09:12,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:09:12,351 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:09:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 02:09:12,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842382423] [2020-07-21 02:09:12,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 02:09:12,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2020-07-21 02:09:12,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553633727] [2020-07-21 02:09:12,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 02:09:12,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:09:12,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 02:09:12,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-21 02:09:12,530 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 6 states. [2020-07-21 02:09:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:09:29,328 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-07-21 02:09:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 02:09:29,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-07-21 02:09:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:09:29,332 INFO L225 Difference]: With dead ends: 55 [2020-07-21 02:09:29,332 INFO L226 Difference]: Without dead ends: 53 [2020-07-21 02:09:29,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-21 02:09:29,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-21 02:09:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-07-21 02:09:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-21 02:09:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2020-07-21 02:09:29,350 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 28 [2020-07-21 02:09:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:09:29,351 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2020-07-21 02:09:29,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 02:09:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2020-07-21 02:09:29,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 02:09:29,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:09:29,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:09:29,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:09:29,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:09:29,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:09:29,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1617304246, now seen corresponding path program 1 times [2020-07-21 02:09:29,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:09:29,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905128816] [2020-07-21 02:09:29,577 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 02:09:29,652 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:09:29,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:09:29,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-21 02:09:29,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:09:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 02:09:29,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:09:29,950 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:09:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 8 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-21 02:09:42,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905128816] [2020-07-21 02:09:42,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:09:42,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2020-07-21 02:09:42,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824472582] [2020-07-21 02:09:42,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 02:09:42,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:09:42,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 02:09:42,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=185, Unknown=5, NotChecked=0, Total=240 [2020-07-21 02:09:42,848 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand 16 states. [2020-07-21 02:10:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:10:20,629 INFO L93 Difference]: Finished difference Result 98 states and 134 transitions. [2020-07-21 02:10:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 02:10:20,630 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-07-21 02:10:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:10:20,631 INFO L225 Difference]: With dead ends: 98 [2020-07-21 02:10:20,632 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 02:10:20,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=54, Invalid=213, Unknown=5, NotChecked=0, Total=272 [2020-07-21 02:10:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 02:10:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-07-21 02:10:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 02:10:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2020-07-21 02:10:20,648 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 37 [2020-07-21 02:10:20,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:10:20,648 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2020-07-21 02:10:20,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 02:10:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2020-07-21 02:10:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 02:10:20,650 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:10:20,650 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:10:20,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:10:20,856 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:10:20,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:10:20,857 INFO L82 PathProgramCache]: Analyzing trace with hash 964983039, now seen corresponding path program 1 times [2020-07-21 02:10:20,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:10:20,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22649805] [2020-07-21 02:10:20,859 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 02:10:20,932 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:10:20,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:10:20,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 02:10:20,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:10:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 02:10:20,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:10:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 8 refuted. 20 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 02:10:33,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22649805] [2020-07-21 02:10:33,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:10:33,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-07-21 02:10:33,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474939820] [2020-07-21 02:10:33,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 02:10:33,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:10:33,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 02:10:33,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=53, Unknown=6, NotChecked=0, Total=90 [2020-07-21 02:10:33,527 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand 10 states. [2020-07-21 02:10:35,771 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296))) is different from false [2020-07-21 02:10:37,864 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296))) is different from false [2020-07-21 02:11:01,020 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296))) is different from false [2020-07-21 02:11:03,144 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296))) is different from false [2020-07-21 02:11:05,268 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 02:12:42,030 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296))) is different from false [2020-07-21 02:13:12,054 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296))) is different from false [2020-07-21 02:13:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:13:12,059 INFO L93 Difference]: Finished difference Result 144 states and 205 transitions. [2020-07-21 02:13:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 02:13:12,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-07-21 02:13:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:13:12,066 INFO L225 Difference]: With dead ends: 144 [2020-07-21 02:13:12,067 INFO L226 Difference]: Without dead ends: 114 [2020-07-21 02:13:12,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=45, Invalid=60, Unknown=13, NotChecked=154, Total=272 [2020-07-21 02:13:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-21 02:13:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2020-07-21 02:13:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-21 02:13:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 143 transitions. [2020-07-21 02:13:12,093 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 143 transitions. Word has length 52 [2020-07-21 02:13:12,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:13:12,094 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 143 transitions. [2020-07-21 02:13:12,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 02:13:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 143 transitions. [2020-07-21 02:13:12,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 02:13:12,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:13:12,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:13:12,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:13:12,303 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:13:12,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:13:12,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2133368278, now seen corresponding path program 1 times [2020-07-21 02:13:12,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:13:12,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146147188] [2020-07-21 02:13:12,305 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 02:13:12,364 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:13:12,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:13:12,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-21 02:13:12,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:13:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 02:13:12,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:13:12,744 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:13:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 23 proven. 0 refuted. 22 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 02:13:40,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146147188] [2020-07-21 02:13:40,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:13:40,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 20 [2020-07-21 02:13:40,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143323546] [2020-07-21 02:13:40,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 02:13:40,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:13:40,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 02:13:40,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=293, Unknown=11, NotChecked=0, Total=380 [2020-07-21 02:13:40,137 INFO L87 Difference]: Start difference. First operand 108 states and 143 transitions. Second operand 20 states. [2020-07-21 02:14:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:14:10,890 INFO L93 Difference]: Finished difference Result 233 states and 344 transitions. [2020-07-21 02:14:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 02:14:10,895 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-07-21 02:14:10,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:14:10,897 INFO L225 Difference]: With dead ends: 233 [2020-07-21 02:14:10,897 INFO L226 Difference]: Without dead ends: 175 [2020-07-21 02:14:10,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=80, Invalid=329, Unknown=11, NotChecked=0, Total=420 [2020-07-21 02:14:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-07-21 02:14:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 172. [2020-07-21 02:14:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-07-21 02:14:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 243 transitions. [2020-07-21 02:14:10,928 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 243 transitions. Word has length 55 [2020-07-21 02:14:10,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:14:10,928 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 243 transitions. [2020-07-21 02:14:10,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-21 02:14:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 243 transitions. [2020-07-21 02:14:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-07-21 02:14:10,931 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:14:10,931 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:14:11,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:14:11,145 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:14:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:14:11,146 INFO L82 PathProgramCache]: Analyzing trace with hash 548921926, now seen corresponding path program 1 times [2020-07-21 02:14:11,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:14:11,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246604502] [2020-07-21 02:14:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:14:11,222 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:14:11,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:14:11,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-21 02:14:11,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:14:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-07-21 02:14:11,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:14:11,731 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 02:14:11,731 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:14:11,800 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:14:11,801 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:14:20,617 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:14:27,245 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:14:46,704 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:15:10,450 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:15:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 78 refuted. 4 times theorem prover too weak. 28 trivial. 0 not checked. [2020-07-21 02:15:44,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246604502] [2020-07-21 02:15:44,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:15:44,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2020-07-21 02:15:44,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306680100] [2020-07-21 02:15:44,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-21 02:15:44,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:15:44,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-21 02:15:44,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=579, Unknown=42, NotChecked=0, Total=812 [2020-07-21 02:15:44,927 INFO L87 Difference]: Start difference. First operand 172 states and 243 transitions. Second operand 29 states. [2020-07-21 02:15:47,823 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse11 (+ c_main_~l~0 2)) (.cse12 (+ c_main_~l~0 4)) (.cse13 (+ c_main_~l~0 3)) (.cse14 (+ c_main_~l~0 5))) (let ((.cse6 (mod .cse14 4294967296)) (.cse5 (< 0 (mod (mod (mod .cse14 4294967296) 7) 4294967296))) (.cse0 (mod .cse13 4294967296)) (.cse2 (< 0 (mod (mod (mod .cse13 4294967296) 7) 4294967296))) (.cse1 (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 3) 4294967296)) (.cse9 (mod .cse12 4294967296)) (.cse7 (mod (+ c_main_~i~0 c_main_~j~0 c_main_~v1~0 c_main_~k~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 4) 4294967296)) (.cse10 (< 0 (mod (mod (mod .cse12 4294967296) 7) 4294967296))) (.cse4 (< 0 (mod (mod (mod .cse11 4294967296) 7) 4294967296))) (.cse8 (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 2) 4294967296)) (.cse3 (mod .cse11 4294967296))) (and (or (not (= .cse0 .cse1)) .cse2) (or (not (= (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 1) 4294967296) .cse3)) .cse4) (or .cse5 (not (= (mod (+ c_main_~i~0 c_main_~j~0 c_main_~v1~0 c_main_~k~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 5) 4294967296) .cse6))) (or (not (= .cse7 .cse6)) .cse5) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (or (not (= .cse0 .cse8)) .cse2) (or (not (= .cse9 .cse1)) .cse10) (or (not (= .cse9 .cse7)) .cse10) (or .cse4 (not (= .cse8 .cse3)))))) is different from false [2020-07-21 02:15:49,972 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 3))) (or (not (= (mod .cse0 4294967296) (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 3) 4294967296))) (< 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (let ((.cse1 (+ c_main_~l~0 4))) (or (not (= (mod .cse1 4294967296) (mod (+ c_main_~i~0 c_main_~j~0 c_main_~v1~0 c_main_~k~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 4) 4294967296))) (< 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296)) (not (= (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 2) 4294967296) (mod .cse2 4294967296)))))) is different from false [2020-07-21 02:15:52,122 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 3))) (or (not (= (mod .cse0 4294967296) (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 3) 4294967296))) (< 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 4))) (or (not (= (mod .cse1 4294967296) (mod (+ c_main_~i~0 c_main_~j~0 c_main_~v1~0 c_main_~k~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 4) 4294967296))) (< 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296)) (not (= (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 2) 4294967296) (mod .cse2 4294967296)))))) is different from false [2020-07-21 02:15:54,271 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 3))) (or (not (= (mod .cse0 4294967296) (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 3) 4294967296))) (< 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 4))) (or (not (= (mod .cse1 4294967296) (mod (+ c_main_~i~0 c_main_~j~0 c_main_~v1~0 c_main_~k~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 4) 4294967296))) (< 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:19:32,609 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 2))) (or (< 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (not (= (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 2) 4294967296) (mod .cse0 4294967296)))))) is different from false [2020-07-21 02:19:49,637 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 3))) (or (not (= (mod .cse0 4294967296) (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 3) 4294967296))) (< 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) is different from false [2020-07-21 02:20:06,734 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 (not (= (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0) 4294967296) (mod .cse0 4294967296))) (< 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:20:30,223 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) 7) 4294967296)) (not (= (mod (+ c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v1~0 c_main_~v2~0 c_main_~v3~0 c_main_~v4~0 c_main_~v5~0 1) 4294967296) (mod .cse0 4294967296)))))) is different from false