/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/eca-rers2012/Problem01_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:18:07,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:18:07,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:18:07,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:18:07,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:18:07,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:18:07,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:18:07,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:18:07,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:18:07,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:18:07,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:18:07,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:18:07,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:18:07,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:18:07,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:18:07,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:18:07,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:18:07,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:18:07,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:18:07,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:18:07,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:18:07,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:18:07,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:18:07,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:18:07,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:18:07,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:18:07,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:18:07,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:18:07,510 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 01:18:07,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:18:07,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:18:07,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:18:07,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:18:07,542 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:18:07,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:18:07,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:18:07,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:18:07,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:18:07,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:18:07,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:18:07,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:18:07,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:18:07,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:18:07,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:18:07,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:18:07,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:18:07,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:18:07,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:18:07,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:18:07,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:18:07,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:18:07,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:18:07,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:18:07,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:18:07,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:18:07,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:07,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:18:07,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:18:07,548 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 01:18:07,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:18:07,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:18:07,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:18:07,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:18:07,854 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:18:07,855 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-07-21 01:18:07,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/701a7e0b5/42d94b741c244081ab4df0aaddd67c78/FLAG1f07de1fe [2020-07-21 01:18:08,525 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:18:08,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-07-21 01:18:08,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/701a7e0b5/42d94b741c244081ab4df0aaddd67c78/FLAG1f07de1fe [2020-07-21 01:18:08,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/701a7e0b5/42d94b741c244081ab4df0aaddd67c78 [2020-07-21 01:18:08,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:18:08,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:18:08,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:18:08,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:18:08,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:18:08,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:18:08" (1/1) ... [2020-07-21 01:18:08,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ce6406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:08, skipping insertion in model container [2020-07-21 01:18:08,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:18:08" (1/1) ... [2020-07-21 01:18:08,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:18:08,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:18:09,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:18:09,303 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:18:09,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:18:09,526 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:18:09,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09 WrapperNode [2020-07-21 01:18:09,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:18:09,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:18:09,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:18:09,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:18:09,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09" (1/1) ... [2020-07-21 01:18:09,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09" (1/1) ... [2020-07-21 01:18:09,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09" (1/1) ... [2020-07-21 01:18:09,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09" (1/1) ... [2020-07-21 01:18:09,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09" (1/1) ... [2020-07-21 01:18:09,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09" (1/1) ... [2020-07-21 01:18:09,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09" (1/1) ... [2020-07-21 01:18:09,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:18:09,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:18:09,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:18:09,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:18:09,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09" (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 01:18:09,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:18:09,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:18:09,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:18:09,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:18:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:18:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:18:10,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:18:10,915 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:18:10,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:18:10 BoogieIcfgContainer [2020-07-21 01:18:10,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:18:10,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:18:10,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:18:10,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:18:10,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:18:08" (1/3) ... [2020-07-21 01:18:10,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1424cf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:18:10, skipping insertion in model container [2020-07-21 01:18:10,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:09" (2/3) ... [2020-07-21 01:18:10,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1424cf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:18:10, skipping insertion in model container [2020-07-21 01:18:10,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:18:10" (3/3) ... [2020-07-21 01:18:10,930 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-07-21 01:18:10,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:18:10,949 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:18:10,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:18:10,993 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:18:10,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:18:10,994 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:18:10,994 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:18:10,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:18:10,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:18:10,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:18:10,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:18:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 01:18:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-07-21 01:18:11,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:11,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:11,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:11,057 INFO L82 PathProgramCache]: Analyzing trace with hash 262180542, now seen corresponding path program 1 times [2020-07-21 01:18:11,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:11,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458926051] [2020-07-21 01:18:11,067 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 01:18:11,255 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:11,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:11,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 01:18:11,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:11,606 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 01:18:11,751 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 01:18:12,147 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 01:18:12,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:12,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458926051] [2020-07-21 01:18:12,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:12,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 01:18:12,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391794242] [2020-07-21 01:18:12,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:18:12,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:12,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:18:12,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:18:12,176 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 01:18:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:13,887 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 01:18:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:18:13,889 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-07-21 01:18:13,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:13,904 INFO L225 Difference]: With dead ends: 472 [2020-07-21 01:18:13,904 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 01:18:13,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 01:18:13,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 01:18:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 01:18:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 01:18:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 01:18:13,976 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 116 [2020-07-21 01:18:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:13,979 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 01:18:13,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:18:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 01:18:13,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-21 01:18:13,984 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:13,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:14,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:14,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:14,188 INFO L82 PathProgramCache]: Analyzing trace with hash -193007079, now seen corresponding path program 1 times [2020-07-21 01:18:14,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:14,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386041982] [2020-07-21 01:18:14,190 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 01:18:14,291 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:14,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:14,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 01:18:14,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:14,991 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:18:14,995 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:18:14,996 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:18:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:15,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:15,766 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 01:18:16,055 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:18:16,205 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 01:18:16,211 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 01:18:16,213 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 01:18:16,214 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:18:16,216 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:18:16,217 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:16,218 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:18:16,222 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:18:16,223 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:18:16,224 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:16,232 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:16,233 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:16,235 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 01:18:16,236 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:16,238 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:16,239 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:16,242 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:16,243 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:16,245 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:16,246 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:16,248 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:16,249 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:16,254 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:16,255 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:16,258 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:16,259 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:16,850 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 01:18:16,853 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 01:18:16,854 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:18:16,917 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:18:16,918 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:16,982 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:17,008 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:17,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386041982] [2020-07-21 01:18:17,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:17,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 01:18:17,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901275763] [2020-07-21 01:18:17,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:18:17,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:17,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:18:17,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:18:17,218 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 01:18:18,228 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 01:18:19,007 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 01:18:19,464 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 01:18:19,683 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 01:18:20,100 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 01:18:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:22,417 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 01:18:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 01:18:22,417 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2020-07-21 01:18:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:22,429 INFO L225 Difference]: With dead ends: 588 [2020-07-21 01:18:22,429 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 01:18:22,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 220 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 01:18:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 01:18:22,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 01:18:22,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 01:18:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 01:18:22,480 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 124 [2020-07-21 01:18:22,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:22,481 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 01:18:22,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:18:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 01:18:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-21 01:18:22,485 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:22,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:22,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:22,699 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:22,700 INFO L82 PathProgramCache]: Analyzing trace with hash 911823639, now seen corresponding path program 1 times [2020-07-21 01:18:22,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:22,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186616842] [2020-07-21 01:18:22,701 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 01:18:22,820 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:18:22,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:22,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:22,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:22,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:22,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186616842] [2020-07-21 01:18:22,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:22,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:18:22,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45995034] [2020-07-21 01:18:22,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:18:22,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:22,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:18:22,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:22,853 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 01:18:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:23,405 INFO L93 Difference]: Finished difference Result 1042 states and 1433 transitions. [2020-07-21 01:18:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:18:23,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-07-21 01:18:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:23,419 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 01:18:23,419 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 01:18:23,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 01:18:23,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 01:18:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 01:18:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 897 transitions. [2020-07-21 01:18:23,460 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 897 transitions. Word has length 127 [2020-07-21 01:18:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:23,461 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 897 transitions. [2020-07-21 01:18:23,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:18:23,461 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 897 transitions. [2020-07-21 01:18:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-21 01:18:23,466 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:23,466 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:23,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:23,680 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:23,681 INFO L82 PathProgramCache]: Analyzing trace with hash 371908886, now seen corresponding path program 1 times [2020-07-21 01:18:23,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:23,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502773774] [2020-07-21 01:18:23,682 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 01:18:23,779 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:18:23,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:23,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:18:23,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:23,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:24,041 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:18:24,093 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:24,094 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 01:18:24,094 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:24,096 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:24,096 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:24,097 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:24,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502773774] [2020-07-21 01:18:24,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:24,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:24,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707531658] [2020-07-21 01:18:24,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:24,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:24,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:24,220 INFO L87 Difference]: Start difference. First operand 691 states and 897 transitions. Second operand 7 states. [2020-07-21 01:18:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:25,615 INFO L93 Difference]: Finished difference Result 1933 states and 2552 transitions. [2020-07-21 01:18:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:18:25,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-07-21 01:18:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:25,622 INFO L225 Difference]: With dead ends: 1933 [2020-07-21 01:18:25,622 INFO L226 Difference]: Without dead ends: 1169 [2020-07-21 01:18:25,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:18:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-07-21 01:18:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1106. [2020-07-21 01:18:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-07-21 01:18:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1302 transitions. [2020-07-21 01:18:25,681 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1302 transitions. Word has length 142 [2020-07-21 01:18:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:25,682 INFO L479 AbstractCegarLoop]: Abstraction has 1106 states and 1302 transitions. [2020-07-21 01:18:25,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1302 transitions. [2020-07-21 01:18:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-21 01:18:25,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:25,694 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:25,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:25,909 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:25,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:25,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1942488210, now seen corresponding path program 1 times [2020-07-21 01:18:25,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:25,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273369415] [2020-07-21 01:18:25,910 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 01:18:26,088 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:26,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:26,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 01:18:26,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 01:18:26,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:26,417 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:18:26,454 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:26,454 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:26,456 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:26,456 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:26,457 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:26,457 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:26,458 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 01:18:26,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273369415] [2020-07-21 01:18:26,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:18:26,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-07-21 01:18:26,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511396489] [2020-07-21 01:18:26,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:18:26,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:26,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:18:26,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:26,639 INFO L87 Difference]: Start difference. First operand 1106 states and 1302 transitions. Second operand 5 states. [2020-07-21 01:18:27,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:27,430 INFO L93 Difference]: Finished difference Result 3121 states and 3747 transitions. [2020-07-21 01:18:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:18:27,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-07-21 01:18:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:27,450 INFO L225 Difference]: With dead ends: 3121 [2020-07-21 01:18:27,450 INFO L226 Difference]: Without dead ends: 1944 [2020-07-21 01:18:27,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 336 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:18:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-07-21 01:18:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1944. [2020-07-21 01:18:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-07-21 01:18:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2224 transitions. [2020-07-21 01:18:27,541 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2224 transitions. Word has length 172 [2020-07-21 01:18:27,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:27,541 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2224 transitions. [2020-07-21 01:18:27,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:18:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2224 transitions. [2020-07-21 01:18:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-21 01:18:27,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:27,547 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:27,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:27,761 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:27,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:27,762 INFO L82 PathProgramCache]: Analyzing trace with hash 147261677, now seen corresponding path program 1 times [2020-07-21 01:18:27,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:27,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464295360] [2020-07-21 01:18:27,763 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 01:18:27,871 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:27,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:27,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:18:27,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:27,908 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:18:27,909 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:18:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:18:27,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:28,188 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:18:28,247 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:28,248 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:28,249 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:18:28,249 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:28,250 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:28,250 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:28,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:28,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:28,252 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:28,253 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:28,253 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:28,284 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:28,337 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:28,339 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 01:18:28,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464295360] [2020-07-21 01:18:28,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:28,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 01:18:28,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038260365] [2020-07-21 01:18:28,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:18:28,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:28,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:18:28,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:18:28,495 INFO L87 Difference]: Start difference. First operand 1944 states and 2224 transitions. Second operand 8 states. [2020-07-21 01:18:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:29,549 INFO L93 Difference]: Finished difference Result 4944 states and 5813 transitions. [2020-07-21 01:18:29,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:18:29,550 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-07-21 01:18:29,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:29,566 INFO L225 Difference]: With dead ends: 4944 [2020-07-21 01:18:29,566 INFO L226 Difference]: Without dead ends: 2927 [2020-07-21 01:18:29,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:18:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-07-21 01:18:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2639. [2020-07-21 01:18:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-07-21 01:18:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3047 transitions. [2020-07-21 01:18:29,646 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3047 transitions. Word has length 189 [2020-07-21 01:18:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:29,647 INFO L479 AbstractCegarLoop]: Abstraction has 2639 states and 3047 transitions. [2020-07-21 01:18:29,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:18:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3047 transitions. [2020-07-21 01:18:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-07-21 01:18:29,655 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:29,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:29,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:29,870 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:29,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:29,870 INFO L82 PathProgramCache]: Analyzing trace with hash 592928131, now seen corresponding path program 1 times [2020-07-21 01:18:29,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:29,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968840811] [2020-07-21 01:18:29,872 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:29,987 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:29,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:29,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:29,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:18:30,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 141 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:18:30,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968840811] [2020-07-21 01:18:30,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:30,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:30,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178237467] [2020-07-21 01:18:30,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:30,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:30,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:30,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:30,140 INFO L87 Difference]: Start difference. First operand 2639 states and 3047 transitions. Second operand 7 states. [2020-07-21 01:18:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:31,287 INFO L93 Difference]: Finished difference Result 5623 states and 6534 transitions. [2020-07-21 01:18:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:18:31,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-07-21 01:18:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:31,301 INFO L225 Difference]: With dead ends: 5623 [2020-07-21 01:18:31,302 INFO L226 Difference]: Without dead ends: 3050 [2020-07-21 01:18:31,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:18:31,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2020-07-21 01:18:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 2093. [2020-07-21 01:18:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-07-21 01:18:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2375 transitions. [2020-07-21 01:18:31,369 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2375 transitions. Word has length 223 [2020-07-21 01:18:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:31,370 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 2375 transitions. [2020-07-21 01:18:31,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2375 transitions. [2020-07-21 01:18:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-07-21 01:18:31,376 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:31,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:31,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:31,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:31,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1739596393, now seen corresponding path program 1 times [2020-07-21 01:18:31,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:31,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61273153] [2020-07-21 01:18:31,593 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:31,731 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:31,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:31,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:18:31,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:31,756 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:18:31,756 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:18:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 01:18:31,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:32,021 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:18:32,090 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:32,091 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:32,091 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:32,092 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:32,092 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:32,093 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:32,094 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:32,094 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:32,095 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:32,124 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 01:18:32,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61273153] [2020-07-21 01:18:32,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:32,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:32,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441470467] [2020-07-21 01:18:32,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:32,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:32,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:32,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:32,209 INFO L87 Difference]: Start difference. First operand 2093 states and 2375 transitions. Second operand 7 states. [2020-07-21 01:18:33,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:33,451 INFO L93 Difference]: Finished difference Result 5097 states and 5828 transitions. [2020-07-21 01:18:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:18:33,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-07-21 01:18:33,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:33,466 INFO L225 Difference]: With dead ends: 5097 [2020-07-21 01:18:33,467 INFO L226 Difference]: Without dead ends: 3070 [2020-07-21 01:18:33,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 488 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:33,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2020-07-21 01:18:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2929. [2020-07-21 01:18:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2929 states. [2020-07-21 01:18:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 3311 transitions. [2020-07-21 01:18:33,539 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 3311 transitions. Word has length 245 [2020-07-21 01:18:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:33,539 INFO L479 AbstractCegarLoop]: Abstraction has 2929 states and 3311 transitions. [2020-07-21 01:18:33,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 3311 transitions. [2020-07-21 01:18:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-07-21 01:18:33,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:33,549 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:33,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:33,763 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:33,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1478591534, now seen corresponding path program 1 times [2020-07-21 01:18:33,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:33,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030851015] [2020-07-21 01:18:33,765 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:33,947 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:18:33,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:33,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:33,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:34,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:34,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030851015] [2020-07-21 01:18:34,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:34,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:18:34,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958013208] [2020-07-21 01:18:34,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:18:34,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:34,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:18:34,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:34,024 INFO L87 Difference]: Start difference. First operand 2929 states and 3311 transitions. Second operand 3 states. [2020-07-21 01:18:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:34,524 INFO L93 Difference]: Finished difference Result 4676 states and 5322 transitions. [2020-07-21 01:18:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:18:34,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2020-07-21 01:18:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:34,527 INFO L225 Difference]: With dead ends: 4676 [2020-07-21 01:18:34,527 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:18:34,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:18:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:18:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:18:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:18:34,537 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 258 [2020-07-21 01:18:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:34,537 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:18:34,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:18:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:18:34,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:18:34,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:34,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:18:37,303 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 205 DAG size of output: 103 [2020-07-21 01:18:37,922 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 54 [2020-07-21 01:18:38,433 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 54 [2020-07-21 01:18:38,437 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:18:38,438 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (let ((.cse2 (= 1 |old(~a20~0)|)) (.cse3 (= 1 |old(~a21~0)|))) (or (let ((.cse0 (= 1 ~a20~0)) (.cse1 (= 1 ~a21~0))) (and (or (not .cse0) .cse1) (or .cse0 (not .cse1)))) (and (not .cse2) .cse3) (and .cse2 (not .cse3)))) (<= |old(~a8~0)| ~a8~0) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 01:18:38,438 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:18:38,438 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 01:18:38,438 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 01:18:38,438 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,438 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,439 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,439 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,439 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,439 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,439 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 01:18:38,440 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 01:18:38,440 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 01:18:38,440 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 01:18:38,440 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 01:18:38,441 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 01:18:38,441 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 01:18:38,441 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 01:18:38,441 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 01:18:38,441 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 01:18:38,441 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,441 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,441 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,442 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,442 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,442 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,442 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 01:18:38,442 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 01:18:38,442 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 01:18:38,442 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 01:18:38,442 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 01:18:38,443 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 01:18:38,443 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 01:18:38,443 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 01:18:38,443 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 01:18:38,443 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 01:18:38,443 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 01:18:38,443 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 506) no Hoare annotation was computed. [2020-07-21 01:18:38,444 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 01:18:38,444 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 01:18:38,444 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 01:18:38,444 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 01:18:38,444 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,444 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,444 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,444 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,445 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,445 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 01:18:38,445 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 01:18:38,445 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 01:18:38,445 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 01:18:38,445 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 01:18:38,445 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 01:18:38,445 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 01:18:38,445 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 01:18:38,446 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 01:18:38,446 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,446 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,446 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,446 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,446 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,446 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 01:18:38,446 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 01:18:38,447 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 01:18:38,447 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 01:18:38,447 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 01:18:38,447 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 01:18:38,447 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 01:18:38,447 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 01:18:38,447 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 01:18:38,447 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 01:18:38,447 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 01:18:38,448 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 01:18:38,448 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 01:18:38,448 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,448 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,448 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,448 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,448 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,448 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 01:18:38,449 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 01:18:38,449 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 01:18:38,449 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 01:18:38,449 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 01:18:38,449 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 01:18:38,449 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 01:18:38,449 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 01:18:38,449 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 01:18:38,449 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,450 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,450 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,450 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,450 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,450 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,450 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 01:18:38,450 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,450 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 01:18:38,451 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 01:18:38,451 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 01:18:38,451 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 01:18:38,451 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 01:18:38,451 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 01:18:38,451 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 01:18:38,451 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 01:18:38,451 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 01:18:38,451 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 01:18:38,452 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 01:18:38,452 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 01:18:38,452 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 01:18:38,452 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,452 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,452 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,452 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,452 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,452 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 01:18:38,453 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 01:18:38,453 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 01:18:38,453 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 01:18:38,453 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 01:18:38,453 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 01:18:38,453 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 01:18:38,453 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 01:18:38,453 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,454 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,454 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,454 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,454 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,454 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 01:18:38,454 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 01:18:38,454 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 01:18:38,454 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 01:18:38,454 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 01:18:38,455 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 01:18:38,455 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 01:18:38,455 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 01:18:38,455 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 01:18:38,455 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 01:18:38,455 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse25 (= 1 |old(~a21~0)|)) (.cse24 (= 1 |old(~a20~0)|))) (let ((.cse14 (= 1 ~a20~0)) (.cse13 (not .cse24)) (.cse7 (not .cse25)) (.cse11 (<= ~a16~0 |old(~a16~0)|)) (.cse12 (= ~a7~0 |old(~a7~0)|)) (.cse15 (= ~a17~0 |old(~a17~0)|)) (.cse16 (<= |old(~a16~0)| ~a16~0)) (.cse17 (<= |old(~a8~0)| ~a8~0)) (.cse20 (= ~a21~0 |old(~a21~0)|))) (let ((.cse9 (and .cse11 .cse12 .cse15 .cse16 .cse17 .cse20)) (.cse18 (= 1 ~a21~0)) (.cse0 (not (= 15 |old(~a8~0)|))) (.cse2 (not (<= |old(~a7~0)| 0))) (.cse4 (not (< 4 |old(~a16~0)|))) (.cse5 (not (= 1 |old(~a17~0)|))) (.cse6 (and (not (= 6 |calculate_output_#in~input|)) (not (= 1 |calculate_output_#in~input|)) (not (= 2 |calculate_output_#in~input|)) (not (= 4 |calculate_output_#in~input|)) (not (= 5 |calculate_output_#in~input|)) (not (= 3 |calculate_output_#in~input|)))) (.cse1 (= 15 ~a8~0)) (.cse8 (not (= 8 ~a12~0))) (.cse3 (not (<= |old(~a16~0)| 5))) (.cse22 (not (= 1 |old(~a7~0)|))) (.cse21 (and (or .cse13 .cse7) (or .cse24 .cse25))) (.cse23 (= 1 ~a7~0)) (.cse10 (not (<= |old(~a21~0)| 0))) (.cse19 (not .cse14))) (and (or .cse0 (and (<= ~a20~0 0) .cse1) .cse2 .cse3 .cse4 (not (<= |old(~a20~0)| 0)) .cse5 .cse6 .cse7 .cse8) (or .cse9 .cse10) (or .cse9 .cse2 (not (<= 6 |old(~a16~0)|)) .cse8) (or (and .cse11 .cse12 (or .cse13 .cse14) .cse15 .cse16 .cse17 .cse18) .cse2 .cse7 .cse8) (or (and .cse11 .cse12 .cse15 .cse17 (< 4 ~a16~0) (or .cse19 .cse18) .cse20) .cse2 .cse4 .cse21 .cse8) (or .cse0 .cse2 .cse3 .cse4 .cse5 .cse21 .cse6 .cse7 .cse1 .cse8) (or .cse22 (and .cse11 .cse23 .cse20) .cse3 .cse7) (or .cse22 .cse21 .cse7 (and .cse23 .cse14 .cse20)) (or .cse24 .cse10 .cse19))))) [2020-07-21 01:18:38,456 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 01:18:38,456 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,456 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,456 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,456 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,456 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 01:18:38,456 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,456 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,456 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 01:18:38,457 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 01:18:38,457 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 01:18:38,457 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 01:18:38,457 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 01:18:38,457 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 01:18:38,457 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 01:18:38,457 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 01:18:38,457 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 01:18:38,457 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 01:18:38,458 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 01:18:38,458 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 01:18:38,458 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,458 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,458 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,458 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,458 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,458 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 01:18:38,459 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 01:18:38,460 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 01:18:38,460 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 01:18:38,460 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 01:18:38,460 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 01:18:38,460 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 01:18:38,460 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,460 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,460 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,461 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,461 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,461 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:38,461 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 01:18:38,461 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 01:18:38,461 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 01:18:38,461 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 01:18:38,461 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 01:18:38,461 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 01:18:38,462 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 01:18:38,462 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 01:18:38,462 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 01:18:38,462 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 01:18:38,462 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:18:38,462 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 01:18:38,462 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:18:38,462 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:18:38,463 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0)) (not (= 8 ~a12~0))) [2020-07-21 01:18:38,463 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:18:38,463 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse2 (= 1 ~a21~0))) (let ((.cse0 (<= ~a7~0 0)) (.cse1 (let ((.cse4 (= 1 ~a20~0))) (or (and (not .cse4) (not .cse2)) (and .cse2 .cse4)))) (.cse3 (= 1 ~a7~0))) (or (and (<= 6 ~a16~0) .cse0) (<= ~a21~0 0) (and .cse0 (< 4 ~a16~0) .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse0 .cse2) (not (= 1 |old(~a20~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse3 .cse2 .cse1) (and .cse3 (<= ~a16~0 5) .cse2) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 01:18:38,463 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 01:18:38,463 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 01:18:38,463 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse2 (= 1 ~a21~0))) (let ((.cse0 (<= ~a7~0 0)) (.cse1 (let ((.cse4 (= 1 ~a20~0))) (or (and (not .cse4) (not .cse2)) (and .cse2 .cse4)))) (.cse3 (= 1 ~a7~0))) (or (and (<= 6 ~a16~0) .cse0) (<= ~a21~0 0) (and .cse0 (< 4 ~a16~0) .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse0 .cse2) (not (= 1 |old(~a20~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse3 .cse2 .cse1) (and .cse3 (<= ~a16~0 5) .cse2) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 01:18:38,464 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:18:38,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:18:38 BoogieIcfgContainer [2020-07-21 01:18:38,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:18:38,488 INFO L168 Benchmark]: Toolchain (without parser) took 29721.03 ms. Allocated memory was 146.3 MB in the beginning and 527.4 MB in the end (delta: 381.2 MB). Free memory was 100.8 MB in the beginning and 124.6 MB in the end (delta: -23.7 MB). Peak memory consumption was 397.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:38,489 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 01:18:38,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.24 ms. Allocated memory was 146.3 MB in the beginning and 206.6 MB in the end (delta: 60.3 MB). Free memory was 100.8 MB in the beginning and 172.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:38,491 INFO L168 Benchmark]: Boogie Preprocessor took 120.94 ms. Allocated memory is still 206.6 MB. Free memory was 172.7 MB in the beginning and 167.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:38,494 INFO L168 Benchmark]: RCFGBuilder took 1272.07 ms. Allocated memory was 206.6 MB in the beginning and 238.6 MB in the end (delta: 32.0 MB). Free memory was 167.8 MB in the beginning and 178.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:38,495 INFO L168 Benchmark]: TraceAbstraction took 27564.40 ms. Allocated memory was 238.6 MB in the beginning and 527.4 MB in the end (delta: 288.9 MB). Free memory was 177.2 MB in the beginning and 124.6 MB in the end (delta: 52.7 MB). Peak memory consumption was 381.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:38,501 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 757.24 ms. Allocated memory was 146.3 MB in the beginning and 206.6 MB in the end (delta: 60.3 MB). Free memory was 100.8 MB in the beginning and 172.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.94 ms. Allocated memory is still 206.6 MB. Free memory was 172.7 MB in the beginning and 167.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1272.07 ms. Allocated memory was 206.6 MB in the beginning and 238.6 MB in the end (delta: 32.0 MB). Free memory was 167.8 MB in the beginning and 178.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 80.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27564.40 ms. Allocated memory was 238.6 MB in the beginning and 527.4 MB in the end (delta: 288.9 MB). Free memory was 177.2 MB in the beginning and 124.6 MB in the end (delta: 52.7 MB). Peak memory consumption was 381.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 506]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((((((((((((6 <= a16 && a7 <= 0) || a21 <= 0) || ((a7 <= 0 && 4 < a16) && ((!(1 == a20) && !(1 == a21)) || (1 == a21 && 1 == a20)))) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || !(4 < \old(a16))) || !(1 == \old(a17))) || (a7 <= 0 && 1 == a21)) || !(1 == \old(a20))) || !(\old(a16) <= 5)) || ((1 == a7 && 1 == a21) && ((!(1 == a20) && !(1 == a21)) || (1 == a21 && 1 == a20)))) || ((1 == a7 && a16 <= 5) && 1 == a21)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.7s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 651 SDtfs, 3868 SDslu, 464 SDs, 0 SdLazy, 9447 SolverSat, 1056 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2739 GetRequests, 2625 SyntacticMatches, 10 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2929occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 1483 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 113 PreInvPairs, 147 NumberOfFragments, 708 HoareAnnotationTreeSize, 113 FomulaSimplifications, 2509 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7310 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 1596 NumberOfCodeBlocks, 1081 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2676 ConstructedInterpolants, 0 QuantifiedInterpolants, 3210107 SizeOfPredicates, 65 NumberOfNonLiveVariables, 3580 ConjunctsInSsa, 196 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 1340/1390 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...