/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:21:43,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:21:43,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:21:43,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:21:43,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:21:43,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:21:43,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:21:43,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:21:43,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:21:43,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:21:43,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:21:43,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:21:43,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:21:43,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:21:43,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:21:43,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:21:43,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:21:43,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:21:43,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:21:43,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:21:43,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:21:43,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:21:43,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:21:43,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:21:43,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:21:43,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:21:43,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:21:43,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:21:43,405 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 20:21:43,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:21:43,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:21:43,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:21:43,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:21:43,422 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:21:43,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:21:43,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:21:43,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:21:43,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:21:43,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:21:43,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:21:43,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:21:43,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:21:43,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:21:43,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:21:43,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:21:43,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:21:43,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:21:43,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:21:43,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:21:43,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:21:43,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:21:43,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:21:43,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:21:43,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:21:43,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:21:43,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:21:43,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:21:43,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:21:43,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 20:21:43,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:21:43,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:21:43,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:21:43,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:21:43,733 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:21:43,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-07-21 20:21:43,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acb29b01f/6da24316d76945919fb7b6a0b2c804f2/FLAG9e19beab3 [2020-07-21 20:21:44,345 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:21:44,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-07-21 20:21:44,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acb29b01f/6da24316d76945919fb7b6a0b2c804f2/FLAG9e19beab3 [2020-07-21 20:21:44,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acb29b01f/6da24316d76945919fb7b6a0b2c804f2 [2020-07-21 20:21:44,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:21:44,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:21:44,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:21:44,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:21:44,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:21:44,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:21:44" (1/1) ... [2020-07-21 20:21:44,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98ba6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:44, skipping insertion in model container [2020-07-21 20:21:44,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:21:44" (1/1) ... [2020-07-21 20:21:44,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:21:44,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:21:44,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:21:44,990 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:21:45,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:21:45,021 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:21:45,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45 WrapperNode [2020-07-21 20:21:45,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:21:45,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:21:45,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:21:45,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:21:45,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45" (1/1) ... [2020-07-21 20:21:45,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45" (1/1) ... [2020-07-21 20:21:45,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45" (1/1) ... [2020-07-21 20:21:45,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45" (1/1) ... [2020-07-21 20:21:45,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45" (1/1) ... [2020-07-21 20:21:45,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45" (1/1) ... [2020-07-21 20:21:45,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45" (1/1) ... [2020-07-21 20:21:45,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:21:45,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:21:45,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:21:45,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:21:45,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45" (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 20:21:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:21:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:21:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 20:21:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:21:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:21:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 20:21:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:21:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:21:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:21:45,376 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:21:45,377 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:21:45,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:21:45 BoogieIcfgContainer [2020-07-21 20:21:45,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:21:45,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:21:45,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:21:45,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:21:45,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:21:44" (1/3) ... [2020-07-21 20:21:45,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55feb661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:21:45, skipping insertion in model container [2020-07-21 20:21:45,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:21:45" (2/3) ... [2020-07-21 20:21:45,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55feb661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:21:45, skipping insertion in model container [2020-07-21 20:21:45,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:21:45" (3/3) ... [2020-07-21 20:21:45,388 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-07-21 20:21:45,399 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:21:45,407 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:21:45,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:21:45,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:21:45,451 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:21:45,451 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:21:45,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:21:45,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:21:45,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:21:45,452 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:21:45,452 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:21:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-21 20:21:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 20:21:45,477 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:21:45,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:21:45,478 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:21:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:21:45,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-07-21 20:21:45,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:21:45,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358894182] [2020-07-21 20:21:45,495 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 20:21:45,560 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:21:45,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:21:45,564 WARN L261 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 20:21:45,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:21:45,710 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 20:21:45,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:21:45,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358894182] [2020-07-21 20:21:45,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:21:45,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 20:21:45,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66874251] [2020-07-21 20:21:45,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 20:21:45,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:21:45,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 20:21:45,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:21:45,739 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-21 20:21:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:21:45,882 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2020-07-21 20:21:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 20:21:45,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-21 20:21:45,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:21:45,894 INFO L225 Difference]: With dead ends: 36 [2020-07-21 20:21:45,894 INFO L226 Difference]: Without dead ends: 20 [2020-07-21 20:21:45,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:21:45,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-21 20:21:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-21 20:21:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 20:21:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-21 20:21:45,945 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-07-21 20:21:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:21:45,945 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-21 20:21:45,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 20:21:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-21 20:21:45,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 20:21:45,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:21:45,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:21:46,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:21:46,161 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:21:46,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:21:46,163 INFO L82 PathProgramCache]: Analyzing trace with hash 982254813, now seen corresponding path program 1 times [2020-07-21 20:21:46,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:21:46,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175979277] [2020-07-21 20:21:46,165 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 20:21:46,207 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:21:46,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:21:46,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 20:21:46,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:21:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:21:46,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:21:46,359 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:21:50,659 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:21:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:21:58,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175979277] [2020-07-21 20:21:58,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:21:58,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-21 20:21:58,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703807403] [2020-07-21 20:21:58,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 20:21:58,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:21:58,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 20:21:58,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=58, Unknown=6, NotChecked=0, Total=90 [2020-07-21 20:21:58,913 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2020-07-21 20:22:17,786 WARN L193 SmtUtils]: Spent 12.47 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 20:22:38,677 WARN L193 SmtUtils]: Spent 8.69 s on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-07-21 20:22:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:22:49,211 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-07-21 20:22:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 20:22:49,211 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-07-21 20:22:49,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:22:49,215 INFO L225 Difference]: With dead ends: 34 [2020-07-21 20:22:49,215 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 20:22:49,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 50.1s TimeCoverageRelationStatistics Valid=46, Invalid=96, Unknown=14, NotChecked=0, Total=156 [2020-07-21 20:22:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 20:22:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-07-21 20:22:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 20:22:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 20:22:49,232 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 16 [2020-07-21 20:22:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:22:49,232 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 20:22:49,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 20:22:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 20:22:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 20:22:49,251 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:22:49,251 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:22:49,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:22:49,452 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:22:49,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:22:49,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1130438097, now seen corresponding path program 2 times [2020-07-21 20:22:49,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:22:49,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973166036] [2020-07-21 20:22:49,455 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 20:22:49,549 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:22:49,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:22:49,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 45 conjunts are in the unsatisfiable core [2020-07-21 20:22:49,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:22:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 20:22:49,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:22:49,787 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:22:51,934 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 20:22:56,068 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:23:04,430 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:23:16,861 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:23:33,313 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:23:51,852 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:24:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 30 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 20:24:16,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973166036] [2020-07-21 20:24:16,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:24:16,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-07-21 20:24:16,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755206165] [2020-07-21 20:24:16,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-21 20:24:16,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:24:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-21 20:24:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=182, Unknown=41, NotChecked=0, Total=306 [2020-07-21 20:24:16,590 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 18 states. [2020-07-21 20:24:19,015 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~i~0 2)) (.cse0 (* c_main_~i~0 3))) (and (= (mod (+ c_main_~k~0 9) 4294967296) (mod (+ .cse0 9) 4294967296)) (= (mod (+ c_main_~k~0 6) 4294967296) (mod (+ .cse0 6) 4294967296)) (= (mod (+ c_main_~j~0 8) 4294967296) (mod (+ .cse1 8) 4294967296)) (= (mod (+ c_main_~j~0 10) 4294967296) (mod (+ .cse1 10) 4294967296)) (= (mod (+ .cse1 12) 4294967296) (mod (+ c_main_~j~0 12) 4294967296)) (= (mod (+ c_main_~j~0 4) 4294967296) (mod (+ .cse1 4) 4294967296)) (= (mod (+ .cse0 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ .cse1 6) 4294967296) (mod (+ c_main_~j~0 6) 4294967296)) (= (mod (+ .cse0 18) 4294967296) (mod (+ c_main_~k~0 18) 4294967296)) (= (mod (+ .cse1 2) 4294967296) (mod (+ c_main_~j~0 2) 4294967296)) (= (mod (+ c_main_~k~0 15) 4294967296) (mod (+ .cse0 15) 4294967296)) (= (mod (+ .cse0 12) 4294967296) (mod (+ c_main_~k~0 12) 4294967296)))) is different from false [2020-07-21 20:25:17,001 WARN L193 SmtUtils]: Spent 38.61 s on a formula simplification that was a NOOP. DAG size: 85 [2020-07-21 20:25:23,049 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_main_~i~0 2)) (.cse0 (* c_main_~i~0 3))) (and (= (mod (+ c_main_~k~0 9) 4294967296) (mod (+ .cse0 9) 4294967296)) (= (mod (+ c_main_~k~0 6) 4294967296) (mod (+ .cse0 6) 4294967296)) (= (mod (+ c_main_~j~0 8) 4294967296) (mod (+ .cse1 8) 4294967296)) (= (mod c_main_~j~0 4294967296) (mod .cse1 4294967296)) (= (mod .cse0 4294967296) (mod c_main_~k~0 4294967296)) (= (mod (+ c_main_~j~0 4) 4294967296) (mod (+ .cse1 4) 4294967296)) (= (mod (+ .cse0 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ .cse1 6) 4294967296) (mod (+ c_main_~j~0 6) 4294967296)) (= (mod (+ .cse1 2) 4294967296) (mod (+ c_main_~j~0 2) 4294967296)) (= (mod (+ .cse0 12) 4294967296) (mod (+ c_main_~k~0 12) 4294967296)))) is different from false [2020-07-21 20:26:16,919 WARN L193 SmtUtils]: Spent 30.23 s on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-07-21 20:27:16,556 WARN L193 SmtUtils]: Spent 23.10 s on a formula simplification that was a NOOP. DAG size: 63 [2020-07-21 20:28:15,279 WARN L193 SmtUtils]: Spent 25.19 s on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-07-21 20:29:15,093 WARN L193 SmtUtils]: Spent 14.30 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 20:30:18,737 WARN L193 SmtUtils]: Spent 8.18 s on a formula simplification that was a NOOP. DAG size: 32 [2020-07-21 20:30:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:30:56,529 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2020-07-21 20:30:56,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 20:30:56,532 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-07-21 20:30:56,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:30:56,534 INFO L225 Difference]: With dead ends: 52 [2020-07-21 20:30:56,534 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 20:30:56,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 413.9s TimeCoverageRelationStatistics Valid=173, Invalid=305, Unknown=130, NotChecked=94, Total=702 [2020-07-21 20:30:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 20:30:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-07-21 20:30:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-21 20:30:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-07-21 20:30:56,550 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 40 [2020-07-21 20:30:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:30:56,551 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-07-21 20:30:56,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-21 20:30:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-07-21 20:30:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-21 20:30:56,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:30:56,554 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:30:56,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:30:56,759 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:30:56,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:30:56,760 INFO L82 PathProgramCache]: Analyzing trace with hash -811144676, now seen corresponding path program 3 times [2020-07-21 20:30:56,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:30:56,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812520980] [2020-07-21 20:30:56,762 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 20:30:56,985 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:30:56,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:30:56,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 87 conjunts are in the unsatisfiable core [2020-07-21 20:30:56,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:30:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 24 proven. 156 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-07-21 20:30:57,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:30:57,432 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:30:59,595 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 20:31:05,856 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:31:14,249 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:31:28,763 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 20:31:28,779 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:31:45,366 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:32:06,073 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:32:30,909 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:32:59,914 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:33:32,784 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:34:12,657 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:34:53,917 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:35:41,928 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 20:35:41,943 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:36:31,591 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts