/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/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 02:09:08,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 02:09:08,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 02:09:08,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 02:09:08,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 02:09:08,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 02:09:08,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 02:09:08,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 02:09:08,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 02:09:08,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 02:09:08,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 02:09:08,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 02:09:08,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 02:09:08,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 02:09:08,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 02:09:08,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 02:09:08,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 02:09:08,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 02:09:08,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 02:09:08,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 02:09:08,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 02:09:08,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 02:09:08,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 02:09:08,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 02:09:08,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 02:09:08,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 02:09:08,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 02:09:08,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 02:09:08,561 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 02:09:08,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 02:09:08,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 02:09:08,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 02:09:08,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 02:09:08,607 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 02:09:08,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 02:09:08,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 02:09:08,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 02:09:08,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 02:09:08,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 02:09:08,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 02:09:08,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 02:09:08,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 02:09:08,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 02:09:08,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 02:09:08,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 02:09:08,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 02:09:08,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 02:09:08,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 02:09:08,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 02:09:08,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 02:09:08,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:09:08,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 02:09:08,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 02:09:08,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 02:09:08,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 02:09:08,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:09:08,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 02:09:08,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 02:09:08,618 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 02:09:09,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 02:09:09,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 02:09:09,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 02:09:09,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 02:09:09,095 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 02:09:09,097 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-21 02:09:09,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd2f8875/f89997d1079c41ab98efa12662e00b73/FLAG87a76caae [2020-07-21 02:09:09,996 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 02:09:09,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-21 02:09:10,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd2f8875/f89997d1079c41ab98efa12662e00b73/FLAG87a76caae [2020-07-21 02:09:10,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd2f8875/f89997d1079c41ab98efa12662e00b73 [2020-07-21 02:09:10,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 02:09:10,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 02:09:10,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 02:09:10,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 02:09:10,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 02:09:10,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:09:10" (1/1) ... [2020-07-21 02:09:10,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235b9204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10, skipping insertion in model container [2020-07-21 02:09:10,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:09:10" (1/1) ... [2020-07-21 02:09:10,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 02:09:10,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 02:09:10,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:09:10,687 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 02:09:10,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:09:10,745 INFO L208 MainTranslator]: Completed translation [2020-07-21 02:09:10,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:09:10 WrapperNode [2020-07-21 02:09:10,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 02:09:10,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 02:09:10,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 02:09:10,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 02:09:10,767 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 02:09:10,767 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 02:09:10,775 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 02:09:10,776 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 02:09:10,912 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 02:09:10,931 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 02:09:10,934 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 02:09:10,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 02:09:10,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 02:09:10,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 02:09:10,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 02:09:10,942 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 02:09:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 02:09:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 02:09:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 02:09:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 02:09:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 02:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 02:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 02:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 02:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 02:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 02:09:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 02:09:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 02:09:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 02:09:11,453 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 02:09:11,453 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 02:09:11,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:09:11 BoogieIcfgContainer [2020-07-21 02:09:11,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 02:09:11,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 02:09:11,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 02:09:11,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 02:09:11,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:09:10" (1/3) ... [2020-07-21 02:09:11,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acd1358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:09:11, skipping insertion in model container [2020-07-21 02:09:11,475 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 02:09:11,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acd1358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:09:11, skipping insertion in model container [2020-07-21 02:09:11,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:09:11" (3/3) ... [2020-07-21 02:09:11,480 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt7.c [2020-07-21 02:09:11,502 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 02:09:11,519 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 02:09:11,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 02:09:11,617 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 02:09:11,618 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 02:09:11,618 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 02:09:11,618 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 02:09:11,619 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 02:09:11,619 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 02:09:11,619 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 02:09:11,619 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 02:09:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-21 02:09:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 02:09:11,716 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:09:11,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:09:11,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:09:11,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:09:11,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1473118151, now seen corresponding path program 1 times [2020-07-21 02:09:11,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:09:11,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31370472] [2020-07-21 02:09:11,744 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 02:09:11,865 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:09:11,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:09:11,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 02:09:11,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:09:12,179 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 02:09:12,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:09:12,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31370472] [2020-07-21 02:09:12,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:09:12,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 02:09:12,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278581048] [2020-07-21 02:09:12,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 02:09:12,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:09:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 02:09:12,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 02:09:12,224 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2020-07-21 02:09:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:09:12,663 INFO L93 Difference]: Finished difference Result 68 states and 99 transitions. [2020-07-21 02:09:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 02:09:12,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-21 02:09:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:09:12,688 INFO L225 Difference]: With dead ends: 68 [2020-07-21 02:09:12,688 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 02:09:12,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 02:09:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 02:09:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-21 02:09:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 02:09:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-07-21 02:09:12,807 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 14 [2020-07-21 02:09:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:09:12,808 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-07-21 02:09:12,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 02:09:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-07-21 02:09:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 02:09:12,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:09:12,814 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] [2020-07-21 02:09:13,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:09:13,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:09:13,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:09:13,032 INFO L82 PathProgramCache]: Analyzing trace with hash 633537884, now seen corresponding path program 1 times [2020-07-21 02:09:13,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:09:13,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950124553] [2020-07-21 02:09:13,034 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 02:09:13,107 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:09:13,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:09:13,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 02:09:13,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:09:13,410 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 02:09:13,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:09:13,476 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:09:13,791 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 02:09:13,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950124553] [2020-07-21 02:09:13,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 02:09:13,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2020-07-21 02:09:13,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285301884] [2020-07-21 02:09:13,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 02:09:13,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:09:13,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 02:09:13,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-21 02:09:13,799 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 6 states. [2020-07-21 02:09:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:09:28,600 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-07-21 02:09:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 02:09:28,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-21 02:09:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:09:28,605 INFO L225 Difference]: With dead ends: 52 [2020-07-21 02:09:28,606 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 02:09:28,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-21 02:09:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 02:09:28,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-21 02:09:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-21 02:09:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2020-07-21 02:09:28,622 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 27 [2020-07-21 02:09:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:09:28,623 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2020-07-21 02:09:28,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 02:09:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2020-07-21 02:09:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 02:09:28,626 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:09:28,626 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] [2020-07-21 02:09:28,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:09:28,828 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:09:28,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:09:28,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1461697819, now seen corresponding path program 1 times [2020-07-21 02:09:28,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:09:28,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528342867] [2020-07-21 02:09:28,832 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 02:09:28,920 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:09:28,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:09:28,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-21 02:09:28,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:09:29,296 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 02:09:29,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:09:29,344 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:09:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 1 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 02:09:32,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528342867] [2020-07-21 02:09:32,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:09:32,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2020-07-21 02:09:32,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550347746] [2020-07-21 02:09:32,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 02:09:32,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:09:32,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 02:09:32,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2020-07-21 02:09:32,298 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 14 states. [2020-07-21 02:09:53,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:09:53,667 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2020-07-21 02:09:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 02:09:53,668 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-07-21 02:09:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:09:53,670 INFO L225 Difference]: With dead ends: 91 [2020-07-21 02:09:53,671 INFO L226 Difference]: Without dead ends: 63 [2020-07-21 02:09:53,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2020-07-21 02:09:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-21 02:09:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-07-21 02:09:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-21 02:09:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2020-07-21 02:09:53,687 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 36 [2020-07-21 02:09:53,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:09:53,688 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2020-07-21 02:09:53,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 02:09:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2020-07-21 02:09:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 02:09:53,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:09:53,690 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:09:53,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:09:53,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:09:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:09:53,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1753881910, now seen corresponding path program 1 times [2020-07-21 02:09:53,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:09:53,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255818670] [2020-07-21 02:09:53,894 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 02:09:53,975 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:09:53,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:09:53,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2020-07-21 02:09:53,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:09:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 02:09:54,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:09:54,380 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 02:10:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 0 refuted. 22 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-21 02:10:07,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255818670] [2020-07-21 02:10:07,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:10:07,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 17 [2020-07-21 02:10:07,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945046336] [2020-07-21 02:10:07,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 02:10:07,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:10:07,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 02:10:07,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=218, Unknown=4, NotChecked=0, Total=272 [2020-07-21 02:10:07,507 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 17 states. [2020-07-21 02:10:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:10:43,684 INFO L93 Difference]: Finished difference Result 111 states and 146 transitions. [2020-07-21 02:10:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 02:10:43,685 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-07-21 02:10:43,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:10:43,687 INFO L225 Difference]: With dead ends: 111 [2020-07-21 02:10:43,688 INFO L226 Difference]: Without dead ends: 83 [2020-07-21 02:10:43,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=54, Invalid=248, Unknown=4, NotChecked=0, Total=306 [2020-07-21 02:10:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-21 02:10:43,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-07-21 02:10:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-21 02:10:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2020-07-21 02:10:43,727 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 52 [2020-07-21 02:10:43,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:10:43,728 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2020-07-21 02:10:43,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 02:10:43,729 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2020-07-21 02:10:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-21 02:10:43,734 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:10:43,735 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:10:43,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:10:43,945 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:10:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:10:43,946 INFO L82 PathProgramCache]: Analyzing trace with hash -722907185, now seen corresponding path program 1 times [2020-07-21 02:10:43,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:10:43,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188018847] [2020-07-21 02:10:43,948 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 02:10:44,052 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:10:44,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:10:44,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 02:10:44,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:10:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 20 proven. 76 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 02:10:44,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:10:44,336 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 02:10:46,528 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 02:10:52,819 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 02:11:01,142 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 02:11:11,510 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 02:11:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 20 proven. 76 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 02:11:23,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188018847] [2020-07-21 02:11:23,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:11:23,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2020-07-21 02:11:23,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599691127] [2020-07-21 02:11:23,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 02:11:23,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:11:23,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 02:11:23,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=127, Unknown=19, NotChecked=0, Total=210 [2020-07-21 02:11:23,985 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand 15 states. [2020-07-21 02:11:26,299 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 5))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296)))) (let ((.cse3 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse3 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse3 4294967296) 7) 4294967296)))) (let ((.cse4 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse4 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse4 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:11:28,384 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 5))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296)))) (let ((.cse3 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse3 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse3 4294967296) 7) 4294967296)))) (let ((.cse4 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse4 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse4 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:11:30,440 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296)))) (let ((.cse3 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse3 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse3 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:11:32,511 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296)))) (let ((.cse3 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse3 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse3 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:11:34,580 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:11:36,648 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:11:40,792 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:11:42,864 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:12:18,207 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 5))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:12:24,410 WARN L838 $PredicateComparison]: unable to prove that (and (or (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:12:26,485 WARN L860 $PredicateComparison]: unable to prove that (and (or (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:12:55,608 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:12:57,728 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:12:59,914 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:14:10,261 WARN L193 SmtUtils]: Spent 23.61 s on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 02:15:14,779 WARN L193 SmtUtils]: Spent 21.71 s on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 02:15:29,934 WARN L838 $PredicateComparison]: unable to prove that (and (or (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) (let ((.cse0 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:16:25,500 WARN L193 SmtUtils]: Spent 17.18 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 02:16:29,750 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:16:31,911 WARN L860 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:16:36,201 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:18:09,723 WARN L193 SmtUtils]: Spent 38.14 s on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 02:18:59,461 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:19:01,621 WARN L860 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:19:16,142 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:19:18,289 WARN L860 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:20:24,807 WARN L193 SmtUtils]: Spent 38.18 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 02:20:26,911 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:20:29,041 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:20:43,953 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:20:46,081 WARN L860 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:20:48,245 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:20:51,972 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 5))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296)))) (let ((.cse3 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse3 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse3 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:20:56,203 WARN L838 $PredicateComparison]: unable to prove that (and (or (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:20:58,327 WARN L860 $PredicateComparison]: unable to prove that (and (or (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 7) 4294967296))) (let ((.cse0 (+ c_main_~l~0 4))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from true [2020-07-21 02:21:10,983 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)))) (let ((.cse2 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse2 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse2 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:21:15,237 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 3))) (or (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)))) (let ((.cse1 (+ c_main_~l~0 2))) (or (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296))))) is different from false [2020-07-21 02:21:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:21:23,636 INFO L93 Difference]: Finished difference Result 286 states and 430 transitions. [2020-07-21 02:21:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-21 02:21:23,739 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-07-21 02:21:23,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:21:23,742 INFO L225 Difference]: With dead ends: 286 [2020-07-21 02:21:23,743 INFO L226 Difference]: Without dead ends: 258 [2020-07-21 02:21:23,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 20 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 397.0s TimeCoverageRelationStatistics Valid=150, Invalid=192, Unknown=118, NotChecked=1100, Total=1560 [2020-07-21 02:21:23,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-21 02:21:23,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 245. [2020-07-21 02:21:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-21 02:21:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 364 transitions. [2020-07-21 02:21:23,777 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 364 transitions. Word has length 72 [2020-07-21 02:21:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:21:23,778 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 364 transitions. [2020-07-21 02:21:23,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 02:21:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 364 transitions. [2020-07-21 02:21:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-21 02:21:23,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:21:23,780 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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 02:21:23,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:21:23,989 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:21:23,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:21:23,990 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144187, now seen corresponding path program 1 times [2020-07-21 02:21:23,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:21:23,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409079318] [2020-07-21 02:21:23,991 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 02:21:24,069 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:21:24,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:21:24,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 02:21:24,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:21:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 12 proven. 119 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-21 02:21:24,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:21:24,715 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts