/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt9.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 17:14:27,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 17:14:27,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 17:14:27,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 17:14:27,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 17:14:27,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 17:14:27,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 17:14:27,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 17:14:27,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 17:14:27,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 17:14:27,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 17:14:27,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 17:14:27,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 17:14:27,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 17:14:27,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 17:14:27,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 17:14:27,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 17:14:27,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 17:14:27,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 17:14:27,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 17:14:27,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 17:14:27,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 17:14:27,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 17:14:27,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 17:14:27,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 17:14:27,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 17:14:27,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 17:14:27,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 17:14:27,436 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 17:14:27,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 17:14:27,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 17:14:27,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 17:14:27,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 17:14:27,476 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 17:14:27,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 17:14:27,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 17:14:27,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 17:14:27,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 17:14:27,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 17:14:27,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 17:14:27,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 17:14:27,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 17:14:27,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 17:14:27,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 17:14:27,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 17:14:27,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 17:14:27,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 17:14:27,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 17:14:27,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 17:14:27,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 17:14:27,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 17:14:27,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 17:14:27,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 17:14:27,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 17:14:27,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 17:14:27,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:27,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 17:14:27,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 17:14:27,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 17:14:27,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 17:14:27,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 17:14:27,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 17:14:27,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 17:14:27,800 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 17:14:27,801 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt9.c [2020-07-21 17:14:27,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26c50c73/f11ca0d0b1ac4f2c9c56bc34801225d5/FLAG00bb64682 [2020-07-21 17:14:28,328 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 17:14:28,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt9.c [2020-07-21 17:14:28,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26c50c73/f11ca0d0b1ac4f2c9c56bc34801225d5/FLAG00bb64682 [2020-07-21 17:14:28,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26c50c73/f11ca0d0b1ac4f2c9c56bc34801225d5 [2020-07-21 17:14:28,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 17:14:28,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 17:14:28,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 17:14:28,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 17:14:28,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 17:14:28,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:14:28" (1/1) ... [2020-07-21 17:14:28,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14581acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28, skipping insertion in model container [2020-07-21 17:14:28,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:14:28" (1/1) ... [2020-07-21 17:14:28,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 17:14:28,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 17:14:28,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:14:28,959 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 17:14:28,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:14:28,992 INFO L208 MainTranslator]: Completed translation [2020-07-21 17:14:28,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28 WrapperNode [2020-07-21 17:14:28,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 17:14:28,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 17:14:28,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 17:14:28,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 17:14:29,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28" (1/1) ... [2020-07-21 17:14:29,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28" (1/1) ... [2020-07-21 17:14:29,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28" (1/1) ... [2020-07-21 17:14:29,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28" (1/1) ... [2020-07-21 17:14:29,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28" (1/1) ... [2020-07-21 17:14:29,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28" (1/1) ... [2020-07-21 17:14:29,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28" (1/1) ... [2020-07-21 17:14:29,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 17:14:29,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 17:14:29,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 17:14:29,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 17:14:29,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28" (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 17:14:29,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 17:14:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 17:14:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 17:14:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 17:14:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 17:14:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 17:14:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 17:14:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 17:14:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 17:14:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 17:14:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 17:14:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 17:14:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 17:14:29,462 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 17:14:29,463 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 17:14:29,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:14:29 BoogieIcfgContainer [2020-07-21 17:14:29,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 17:14:29,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 17:14:29,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 17:14:29,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 17:14:29,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:14:28" (1/3) ... [2020-07-21 17:14:29,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c136c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:14:29, skipping insertion in model container [2020-07-21 17:14:29,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:28" (2/3) ... [2020-07-21 17:14:29,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c136c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:14:29, skipping insertion in model container [2020-07-21 17:14:29,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:14:29" (3/3) ... [2020-07-21 17:14:29,481 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt9.c [2020-07-21 17:14:29,498 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 17:14:29,509 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 17:14:29,527 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 17:14:29,555 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 17:14:29,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 17:14:29,556 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 17:14:29,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 17:14:29,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 17:14:29,557 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 17:14:29,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 17:14:29,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 17:14:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-21 17:14:29,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 17:14:29,585 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:29,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:29,587 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:29,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:29,594 INFO L82 PathProgramCache]: Analyzing trace with hash -684006215, now seen corresponding path program 1 times [2020-07-21 17:14:29,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:29,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119737033] [2020-07-21 17:14:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:29,704 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:14:29,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:29,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 17:14:29,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:29,934 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 17:14:29,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 17:14:29,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119737033] [2020-07-21 17:14:29,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 17:14:29,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 17:14:29,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659166299] [2020-07-21 17:14:29,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 17:14:29,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:29,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 17:14:29,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 17:14:29,964 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2020-07-21 17:14:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:30,219 INFO L93 Difference]: Finished difference Result 74 states and 111 transitions. [2020-07-21 17:14:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 17:14:30,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-21 17:14:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:30,232 INFO L225 Difference]: With dead ends: 74 [2020-07-21 17:14:30,232 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 17:14:30,237 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 17:14:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 17:14:30,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 17:14:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 17:14:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-21 17:14:30,284 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 14 [2020-07-21 17:14:30,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:30,285 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-21 17:14:30,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 17:14:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-21 17:14:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 17:14:30,287 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:30,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:30,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:30,501 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:30,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1563298987, now seen corresponding path program 1 times [2020-07-21 17:14:30,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:30,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534972347] [2020-07-21 17:14:30,503 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:30,563 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:14:30,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:30,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-21 17:14:30,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:30,784 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 17:14:30,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:14:30,820 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:14:30,992 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 17:14:30,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534972347] [2020-07-21 17:14:30,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 17:14:30,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2020-07-21 17:14:30,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769620844] [2020-07-21 17:14:30,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 17:14:30,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:30,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 17:14:30,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-21 17:14:30,996 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-07-21 17:14:58,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:58,245 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2020-07-21 17:14:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 17:14:58,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-21 17:14:58,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:58,249 INFO L225 Difference]: With dead ends: 58 [2020-07-21 17:14:58,249 INFO L226 Difference]: Without dead ends: 56 [2020-07-21 17:14:58,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-21 17:14:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-21 17:14:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-21 17:14:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 17:14:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-07-21 17:14:58,261 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 29 [2020-07-21 17:14:58,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:58,262 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-07-21 17:14:58,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 17:14:58,262 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-07-21 17:14:58,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-21 17:14:58,263 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:58,264 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:58,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:58,479 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:58,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1477789953, now seen corresponding path program 1 times [2020-07-21 17:14:58,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:58,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106428113] [2020-07-21 17:14:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:58,526 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:14:58,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:58,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 17:14:58,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 17:14:58,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:15:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 10 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 17:15:06,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106428113] [2020-07-21 17:15:06,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:15:06,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 17:15:06,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644703921] [2020-07-21 17:15:06,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 17:15:06,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:15:06,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 17:15:06,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=31, Unknown=4, NotChecked=0, Total=56 [2020-07-21 17:15:06,927 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand 8 states. [2020-07-21 17:15:09,123 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:15:11,201 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:16:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:16:33,749 INFO L93 Difference]: Finished difference Result 106 states and 151 transitions. [2020-07-21 17:16:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 17:16:33,750 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-07-21 17:16:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:16:33,753 INFO L225 Difference]: With dead ends: 106 [2020-07-21 17:16:33,753 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 17:16:33,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=25, Invalid=33, Unknown=6, NotChecked=26, Total=90 [2020-07-21 17:16:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 17:16:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-07-21 17:16:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-21 17:16:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2020-07-21 17:16:33,771 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 39 [2020-07-21 17:16:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:16:33,772 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2020-07-21 17:16:33,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 17:16:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2020-07-21 17:16:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 17:16:33,774 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:16:33,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:16:33,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:16:33,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:16:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:16:33,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1143083323, now seen corresponding path program 1 times [2020-07-21 17:16:33,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:16:33,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820010216] [2020-07-21 17:16:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:16:34,053 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:16:34,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:16:34,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 35 conjunts are in the unsatisfiable core [2020-07-21 17:16:34,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:16:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 17:16:34,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:16:34,323 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:16:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 13 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 17:16:40,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820010216] [2020-07-21 17:16:40,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:16:40,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2020-07-21 17:16:40,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782379787] [2020-07-21 17:16:40,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 17:16:40,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:16:40,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 17:16:40,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=144, Unknown=2, NotChecked=0, Total=182 [2020-07-21 17:16:40,782 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand 14 states. [2020-07-21 17:16:49,433 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 17:17:14,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:17:14,517 INFO L93 Difference]: Finished difference Result 105 states and 141 transitions. [2020-07-21 17:17:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 17:17:14,517 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-07-21 17:17:14,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:17:14,519 INFO L225 Difference]: With dead ends: 105 [2020-07-21 17:17:14,519 INFO L226 Difference]: Without dead ends: 81 [2020-07-21 17:17:14,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=48, Invalid=188, Unknown=4, NotChecked=0, Total=240 [2020-07-21 17:17:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-21 17:17:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-21 17:17:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-21 17:17:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2020-07-21 17:17:14,533 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 44 [2020-07-21 17:17:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:17:14,534 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2020-07-21 17:17:14,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 17:17:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2020-07-21 17:17:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-21 17:17:14,536 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:17:14,536 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:17:14,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:17:14,741 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:17:14,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:17:14,742 INFO L82 PathProgramCache]: Analyzing trace with hash 328242457, now seen corresponding path program 1 times [2020-07-21 17:17:14,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:17:14,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304007738] [2020-07-21 17:17:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:17:14,803 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:17:14,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:17:14,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 17:17:14,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:17:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 17:17:14,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:17:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 37 refuted. 20 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 17:17:33,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304007738] [2020-07-21 17:17:33,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:17:33,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-21 17:17:33,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276639933] [2020-07-21 17:17:33,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 17:17:33,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:17:33,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 17:17:33,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=80, Unknown=9, NotChecked=0, Total=132 [2020-07-21 17:17:33,575 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand 12 states. [2020-07-21 17:17:35,814 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:17:37,878 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:17:39,948 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:19:59,830 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:22:02,439 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:22:27,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:22:27,791 INFO L93 Difference]: Finished difference Result 151 states and 213 transitions. [2020-07-21 17:22:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 17:22:27,793 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-07-21 17:22:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:22:27,795 INFO L225 Difference]: With dead ends: 151 [2020-07-21 17:22:27,795 INFO L226 Difference]: Without dead ends: 119 [2020-07-21 17:22:27,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=53, Invalid=85, Unknown=14, NotChecked=120, Total=272 [2020-07-21 17:22:27,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-21 17:22:27,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2020-07-21 17:22:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-21 17:22:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 156 transitions. [2020-07-21 17:22:27,820 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 156 transitions. Word has length 68 [2020-07-21 17:22:27,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:22:27,821 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 156 transitions. [2020-07-21 17:22:27,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 17:22:27,821 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 156 transitions. [2020-07-21 17:22:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-07-21 17:22:27,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:22:27,824 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:22:28,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:22:28,028 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:22:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:22:28,028 INFO L82 PathProgramCache]: Analyzing trace with hash -839539930, now seen corresponding path program 1 times [2020-07-21 17:22:28,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:22:28,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735670363] [2020-07-21 17:22:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:22:28,085 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:22:28,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:22:28,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 43 conjunts are in the unsatisfiable core [2020-07-21 17:22:28,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:22:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 74 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 17:22:28,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:22:28,534 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:22:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 0 refuted. 38 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-21 17:22:53,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735670363] [2020-07-21 17:22:53,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:22:53,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 21 [2020-07-21 17:22:53,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359232526] [2020-07-21 17:22:53,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 17:22:53,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:22:53,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 17:22:53,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=336, Unknown=9, NotChecked=0, Total=420 [2020-07-21 17:22:53,906 INFO L87 Difference]: Start difference. First operand 118 states and 156 transitions. Second operand 21 states. [2020-07-21 17:24:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:24:04,878 INFO L93 Difference]: Finished difference Result 151 states and 206 transitions. [2020-07-21 17:24:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 17:24:04,879 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 71 [2020-07-21 17:24:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:24:04,881 INFO L225 Difference]: With dead ends: 151 [2020-07-21 17:24:04,881 INFO L226 Difference]: Without dead ends: 103 [2020-07-21 17:24:04,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 115 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=79, Invalid=374, Unknown=9, NotChecked=0, Total=462 [2020-07-21 17:24:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-21 17:24:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-07-21 17:24:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-21 17:24:04,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2020-07-21 17:24:04,893 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 71 [2020-07-21 17:24:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:24:04,894 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2020-07-21 17:24:04,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 17:24:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2020-07-21 17:24:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-21 17:24:04,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:24:04,896 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:24:05,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:24:05,109 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:24:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:24:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1252453600, now seen corresponding path program 1 times [2020-07-21 17:24:05,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:24:05,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919787696] [2020-07-21 17:24:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:24:05,176 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:24:05,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:24:05,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 17:24:05,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:24:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 24 proven. 127 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-21 17:24:05,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:24:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 24 proven. 127 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-21 17:24:05,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919787696] [2020-07-21 17:24:05,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:24:05,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-07-21 17:24:05,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995887912] [2020-07-21 17:24:05,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 17:24:05,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:24:05,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 17:24:05,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-07-21 17:24:05,442 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand 16 states. [2020-07-21 17:24:10,268 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 17:24:34,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:24:34,147 INFO L93 Difference]: Finished difference Result 381 states and 592 transitions. [2020-07-21 17:24:34,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-07-21 17:24:34,148 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 92 [2020-07-21 17:24:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:24:34,151 INFO L225 Difference]: With dead ends: 381 [2020-07-21 17:24:34,152 INFO L226 Difference]: Without dead ends: 349 [2020-07-21 17:24:34,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=684, Invalid=1968, Unknown=0, NotChecked=0, Total=2652 [2020-07-21 17:24:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-07-21 17:24:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 337. [2020-07-21 17:24:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-21 17:24:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 498 transitions. [2020-07-21 17:24:34,186 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 498 transitions. Word has length 92 [2020-07-21 17:24:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:24:34,186 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 498 transitions. [2020-07-21 17:24:34,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 17:24:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 498 transitions. [2020-07-21 17:24:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-21 17:24:34,188 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:24:34,189 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:24:34,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:24:34,402 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:24:34,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:24:34,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1342259365, now seen corresponding path program 1 times [2020-07-21 17:24:34,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:24:34,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009463209] [2020-07-21 17:24:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:24:34,470 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:24:34,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:24:34,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-21 17:24:34,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:24:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 12 proven. 149 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-21 17:24:35,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:24:35,176 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:25:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 12 proven. 0 refuted. 101 times theorem prover too weak. 108 trivial. 0 not checked. [2020-07-21 17:25:03,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009463209] [2020-07-21 17:25:03,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:25:03,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 24 [2020-07-21 17:25:03,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288531164] [2020-07-21 17:25:03,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 17:25:03,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:25:03,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 17:25:03,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=461, Unknown=7, NotChecked=0, Total=552 [2020-07-21 17:25:03,162 INFO L87 Difference]: Start difference. First operand 337 states and 498 transitions. Second operand 24 states. [2020-07-21 17:25:29,564 WARN L193 SmtUtils]: Spent 4.23 s on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 17:26:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:26:20,472 INFO L93 Difference]: Finished difference Result 828 states and 1295 transitions. [2020-07-21 17:26:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 17:26:20,473 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 94 [2020-07-21 17:26:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:26:20,478 INFO L225 Difference]: With dead ends: 828 [2020-07-21 17:26:20,478 INFO L226 Difference]: Without dead ends: 578 [2020-07-21 17:26:20,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 153 SyntacticMatches, 14 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=101, Invalid=539, Unknown=10, NotChecked=0, Total=650 [2020-07-21 17:26:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-07-21 17:26:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 570. [2020-07-21 17:26:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-07-21 17:26:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 878 transitions. [2020-07-21 17:26:20,528 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 878 transitions. Word has length 94 [2020-07-21 17:26:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:26:20,528 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 878 transitions. [2020-07-21 17:26:20,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 17:26:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 878 transitions. [2020-07-21 17:26:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-21 17:26:20,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:26:20,531 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:26:20,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:26:20,737 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:26:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:26:20,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1074922243, now seen corresponding path program 1 times [2020-07-21 17:26:20,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:26:20,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213324869] [2020-07-21 17:26:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:26:20,810 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:26:20,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:26:20,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 17:26:20,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:26:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 32 proven. 219 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-07-21 17:26:20,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:27:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 32 proven. 211 refuted. 8 times theorem prover too weak. 112 trivial. 0 not checked. [2020-07-21 17:27:24,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213324869] [2020-07-21 17:27:24,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:27:24,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2020-07-21 17:27:24,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761496707] [2020-07-21 17:27:24,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 17:27:24,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:27:24,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 17:27:24,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=244, Unknown=30, NotChecked=0, Total=380 [2020-07-21 17:27:24,638 INFO L87 Difference]: Start difference. First operand 570 states and 878 transitions. Second operand 20 states. [2020-07-21 17:27:27,069 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 7) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 6) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 8) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:27:29,130 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 7) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 6) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:27:31,205 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 7) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 6) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:27:33,289 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 7) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 6) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:27:37,496 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 7) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 6) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 7) 4294967296))) is different from false [2020-07-21 17:27:39,607 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 7) 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 6) 4294967296) 7) 4294967296))) is different from false