/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:49:06,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:49:06,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:49:06,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:49:06,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:49:06,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:49:06,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:49:06,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:49:06,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:49:06,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:49:06,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:49:06,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:49:06,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:49:06,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:49:06,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:49:06,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:49:06,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:49:06,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:49:06,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:49:06,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:49:06,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:49:06,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:49:07,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:49:07,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:49:07,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:49:07,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:49:07,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:49:07,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:49:07,015 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 22:49:07,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:49:07,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:49:07,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:49:07,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:49:07,031 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:49:07,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:49:07,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:49:07,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:49:07,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:49:07,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:49:07,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:49:07,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:49:07,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:49:07,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:49:07,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:49:07,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:49:07,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:49:07,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:49:07,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:49:07,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:49:07,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:49:07,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:49:07,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:49:07,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:49:07,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:49:07,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:49:07,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:07,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:49:07,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:49:07,036 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 22:49:07,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:49:07,328 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:49:07,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:49:07,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:49:07,333 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:49:07,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-07-21 22:49:07,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9597ae35/3610bf62c1e342879fc32608ec56ca6a/FLAG7b5d07d3c [2020-07-21 22:49:07,878 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:49:07,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-07-21 22:49:07,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9597ae35/3610bf62c1e342879fc32608ec56ca6a/FLAG7b5d07d3c [2020-07-21 22:49:08,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9597ae35/3610bf62c1e342879fc32608ec56ca6a [2020-07-21 22:49:08,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:49:08,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:49:08,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:49:08,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:49:08,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:49:08,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:49:08" (1/1) ... [2020-07-21 22:49:08,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d36612f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08, skipping insertion in model container [2020-07-21 22:49:08,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:49:08" (1/1) ... [2020-07-21 22:49:08,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:49:08,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:49:08,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:49:08,660 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:49:08,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:49:08,913 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:49:08,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08 WrapperNode [2020-07-21 22:49:08,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:49:08,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:49:08,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:49:08,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:49:08,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08" (1/1) ... [2020-07-21 22:49:08,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08" (1/1) ... [2020-07-21 22:49:08,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08" (1/1) ... [2020-07-21 22:49:08,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08" (1/1) ... [2020-07-21 22:49:08,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08" (1/1) ... [2020-07-21 22:49:09,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08" (1/1) ... [2020-07-21 22:49:09,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08" (1/1) ... [2020-07-21 22:49:09,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:49:09,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:49:09,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:49:09,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:49:09,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08" (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 22:49:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:49:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:49:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:49:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:49:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:49:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:49:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:49:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:49:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:49:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:49:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:49:10,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:49:10,400 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:49:10,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:49:10 BoogieIcfgContainer [2020-07-21 22:49:10,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:49:10,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:49:10,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:49:10,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:49:10,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:49:08" (1/3) ... [2020-07-21 22:49:10,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bae5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:49:10, skipping insertion in model container [2020-07-21 22:49:10,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:08" (2/3) ... [2020-07-21 22:49:10,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bae5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:49:10, skipping insertion in model container [2020-07-21 22:49:10,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:49:10" (3/3) ... [2020-07-21 22:49:10,415 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-07-21 22:49:10,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:49:10,435 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:49:10,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:49:10,478 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:49:10,479 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:49:10,479 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:49:10,479 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:49:10,479 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:49:10,480 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:49:10,480 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:49:10,480 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:49:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 22:49:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-21 22:49:10,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:10,519 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] [2020-07-21 22:49:10,519 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:10,526 INFO L82 PathProgramCache]: Analyzing trace with hash -897711290, now seen corresponding path program 1 times [2020-07-21 22:49:10,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:10,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082764802] [2020-07-21 22:49:10,536 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 22:49:10,729 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:10,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:10,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 22:49:10,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:11,097 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 22:49:11,231 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 22:49:11,648 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 22:49:11,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:49:11,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082764802] [2020-07-21 22:49:11,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:49:11,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 22:49:11,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38174334] [2020-07-21 22:49:11,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:49:11,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:11,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:49:11,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:49:11,675 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 22:49:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:13,402 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 22:49:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:49:13,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-07-21 22:49:13,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:13,420 INFO L225 Difference]: With dead ends: 472 [2020-07-21 22:49:13,420 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 22:49:13,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 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 22:49:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 22:49:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 22:49:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 22:49:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 22:49:13,487 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 110 [2020-07-21 22:49:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:13,488 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 22:49:13,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:49:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 22:49:13,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-07-21 22:49:13,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:13,496 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] [2020-07-21 22:49:13,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:13,697 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:13,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1096074977, now seen corresponding path program 1 times [2020-07-21 22:49:13,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:13,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105467462] [2020-07-21 22:49:13,700 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 22:49:13,808 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:13,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:13,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 22:49:13,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:14,484 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:49:14,487 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:49:14,487 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:49:14,584 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 22:49:14,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:15,331 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 22:49:15,488 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:49:15,650 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:49:15,802 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 22:49:15,808 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 22:49:15,810 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 22:49:15,812 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:49:15,813 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:49:15,814 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:15,815 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:49:15,819 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:49:15,821 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:49:15,822 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:15,830 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:15,832 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:15,835 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 22:49:15,836 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:15,837 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:15,838 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:15,842 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:15,843 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:15,845 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:15,846 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:15,847 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:15,848 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:15,854 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:15,855 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:15,857 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:15,858 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:16,432 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 22:49:16,436 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 22:49:16,437 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:49:16,529 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:49:16,530 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:16,577 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:16,607 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:16,790 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 22:49:16,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105467462] [2020-07-21 22:49:16,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:16,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 22:49:16,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831043045] [2020-07-21 22:49:16,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 22:49:16,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:16,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 22:49:16,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:49:16,806 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 22:49:17,798 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 22:49:18,312 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 22:49:18,613 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 22:49:19,071 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 22:49:19,298 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 22:49:19,747 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 22:49:21,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:21,924 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 22:49:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 22:49:21,925 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 118 [2020-07-21 22:49:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:21,939 INFO L225 Difference]: With dead ends: 588 [2020-07-21 22:49:21,941 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 22:49:21,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 22:49:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 22:49:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 22:49:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 22:49:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 22:49:22,026 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 118 [2020-07-21 22:49:22,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:22,029 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 22:49:22,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 22:49:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 22:49:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-21 22:49:22,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:22,037 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] [2020-07-21 22:49:22,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:22,238 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:22,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash 181616223, now seen corresponding path program 1 times [2020-07-21 22:49:22,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:22,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503966850] [2020-07-21 22:49:22,240 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 22:49:22,366 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:49:22,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:22,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:49:22,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:22,398 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 22:49:22,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:49:22,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503966850] [2020-07-21 22:49:22,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:49:22,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:49:22,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877743182] [2020-07-21 22:49:22,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:49:22,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:22,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:49:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:49:22,401 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 22:49:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:22,952 INFO L93 Difference]: Finished difference Result 1042 states and 1433 transitions. [2020-07-21 22:49:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:49:22,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-07-21 22:49:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:22,961 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 22:49:22,961 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 22:49:22,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 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 22:49:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 22:49:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 22:49:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 22:49:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 897 transitions. [2020-07-21 22:49:22,990 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 897 transitions. Word has length 121 [2020-07-21 22:49:22,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:22,991 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 897 transitions. [2020-07-21 22:49:22,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:49:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 897 transitions. [2020-07-21 22:49:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-21 22:49:22,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:22,996 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] [2020-07-21 22:49:23,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:23,205 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:23,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:23,206 INFO L82 PathProgramCache]: Analyzing trace with hash -764741730, now seen corresponding path program 1 times [2020-07-21 22:49:23,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:23,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411590961] [2020-07-21 22:49:23,208 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 22:49:23,332 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:49:23,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:23,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:49:23,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:23,391 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 22:49:23,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:23,595 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:49:23,639 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:23,640 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 22:49:23,640 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:23,641 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:23,642 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:23,642 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:23,751 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 22:49:23,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411590961] [2020-07-21 22:49:23,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:23,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:23,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045351942] [2020-07-21 22:49:23,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:23,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:23,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:23,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:23,754 INFO L87 Difference]: Start difference. First operand 691 states and 897 transitions. Second operand 7 states. [2020-07-21 22:49:25,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:25,037 INFO L93 Difference]: Finished difference Result 1933 states and 2552 transitions. [2020-07-21 22:49:25,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:49:25,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-07-21 22:49:25,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:25,048 INFO L225 Difference]: With dead ends: 1933 [2020-07-21 22:49:25,049 INFO L226 Difference]: Without dead ends: 1169 [2020-07-21 22:49:25,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 268 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 22:49:25,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-07-21 22:49:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1106. [2020-07-21 22:49:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-07-21 22:49:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1302 transitions. [2020-07-21 22:49:25,115 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1302 transitions. Word has length 136 [2020-07-21 22:49:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:25,117 INFO L479 AbstractCegarLoop]: Abstraction has 1106 states and 1302 transitions. [2020-07-21 22:49:25,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1302 transitions. [2020-07-21 22:49:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-21 22:49:25,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:25,124 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] [2020-07-21 22:49:25,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:25,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1737975834, now seen corresponding path program 1 times [2020-07-21 22:49:25,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:25,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143287505] [2020-07-21 22:49:25,341 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 22:49:25,442 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:49:25,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:25,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 22:49:25,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:25,524 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 22:49:25,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:25,731 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:49:25,781 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:25,782 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:25,782 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:25,784 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 2, 2, 1] term [2020-07-21 22:49:25,784 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:25,785 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:49:25,785 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:25,786 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:25,786 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:25,787 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:25,787 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:25,788 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:25,789 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:25,970 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 22:49:25,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143287505] [2020-07-21 22:49:25,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:49:25,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-07-21 22:49:25,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249187808] [2020-07-21 22:49:25,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:49:25,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:25,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:49:25,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:25,973 INFO L87 Difference]: Start difference. First operand 1106 states and 1302 transitions. Second operand 5 states. [2020-07-21 22:49:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:26,759 INFO L93 Difference]: Finished difference Result 3121 states and 3747 transitions. [2020-07-21 22:49:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:49:26,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-07-21 22:49:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:26,775 INFO L225 Difference]: With dead ends: 3121 [2020-07-21 22:49:26,776 INFO L226 Difference]: Without dead ends: 1944 [2020-07-21 22:49:26,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:49:26,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-07-21 22:49:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1944. [2020-07-21 22:49:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-07-21 22:49:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2224 transitions. [2020-07-21 22:49:26,858 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2224 transitions. Word has length 166 [2020-07-21 22:49:26,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:26,859 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2224 transitions. [2020-07-21 22:49:26,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:49:26,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2224 transitions. [2020-07-21 22:49:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-07-21 22:49:26,865 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:26,865 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] [2020-07-21 22:49:27,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:27,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:27,071 INFO L82 PathProgramCache]: Analyzing trace with hash -673477451, now seen corresponding path program 1 times [2020-07-21 22:49:27,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:27,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890581752] [2020-07-21 22:49:27,071 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 22:49:27,195 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:49:27,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:27,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:49:27,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:27,237 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:49:27,237 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:49:27,296 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 22:49:27,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:27,503 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:49:27,558 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,559 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,560 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:49:27,560 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:27,561 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:27,561 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,562 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,563 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,563 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,564 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:27,564 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,593 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:27,652 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,654 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:27,826 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 22:49:27,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890581752] [2020-07-21 22:49:27,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:27,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 22:49:27,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805719970] [2020-07-21 22:49:27,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:49:27,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:27,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:49:27,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:49:27,829 INFO L87 Difference]: Start difference. First operand 1944 states and 2224 transitions. Second operand 8 states. [2020-07-21 22:49:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:28,862 INFO L93 Difference]: Finished difference Result 4944 states and 5813 transitions. [2020-07-21 22:49:28,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:49:28,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-07-21 22:49:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:28,877 INFO L225 Difference]: With dead ends: 4944 [2020-07-21 22:49:28,877 INFO L226 Difference]: Without dead ends: 2927 [2020-07-21 22:49:28,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 359 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 22:49:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-07-21 22:49:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2639. [2020-07-21 22:49:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-07-21 22:49:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3047 transitions. [2020-07-21 22:49:28,963 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3047 transitions. Word has length 183 [2020-07-21 22:49:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:28,963 INFO L479 AbstractCegarLoop]: Abstraction has 2639 states and 3047 transitions. [2020-07-21 22:49:28,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:49:28,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3047 transitions. [2020-07-21 22:49:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-07-21 22:49:28,971 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:28,972 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] [2020-07-21 22:49:29,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:29,185 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:29,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:29,186 INFO L82 PathProgramCache]: Analyzing trace with hash -401307189, now seen corresponding path program 1 times [2020-07-21 22:49:29,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:29,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104656711] [2020-07-21 22:49:29,187 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 22:49:29,296 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:49:29,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:29,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:49:29,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:29,342 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 22:49:29,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:29,479 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 22:49:29,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104656711] [2020-07-21 22:49:29,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:29,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:29,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43156142] [2020-07-21 22:49:29,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:29,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:29,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:29,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:29,483 INFO L87 Difference]: Start difference. First operand 2639 states and 3047 transitions. Second operand 7 states. [2020-07-21 22:49:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:30,685 INFO L93 Difference]: Finished difference Result 5623 states and 6534 transitions. [2020-07-21 22:49:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:49:30,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-07-21 22:49:30,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:30,702 INFO L225 Difference]: With dead ends: 5623 [2020-07-21 22:49:30,702 INFO L226 Difference]: Without dead ends: 3050 [2020-07-21 22:49:30,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 431 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 22:49:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2020-07-21 22:49:30,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 2093. [2020-07-21 22:49:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-07-21 22:49:30,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2375 transitions. [2020-07-21 22:49:30,775 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2375 transitions. Word has length 217 [2020-07-21 22:49:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:30,775 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 2375 transitions. [2020-07-21 22:49:30,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:30,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2375 transitions. [2020-07-21 22:49:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-07-21 22:49:30,782 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:30,782 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] [2020-07-21 22:49:30,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:30,997 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:30,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1591498529, now seen corresponding path program 1 times [2020-07-21 22:49:30,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:30,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958298609] [2020-07-21 22:49:30,999 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 22:49:31,127 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:31,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:31,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:49:31,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:31,227 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 22:49:31,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:31,429 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:49:31,469 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:31,470 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:31,470 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:31,471 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 22:49:31,471 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:31,472 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:31,472 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:31,601 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 22:49:31,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958298609] [2020-07-21 22:49:31,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:31,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:31,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607067311] [2020-07-21 22:49:31,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:31,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:31,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:31,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:31,604 INFO L87 Difference]: Start difference. First operand 2093 states and 2375 transitions. Second operand 7 states. [2020-07-21 22:49:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:32,842 INFO L93 Difference]: Finished difference Result 5504 states and 6329 transitions. [2020-07-21 22:49:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:49:32,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-07-21 22:49:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:32,859 INFO L225 Difference]: With dead ends: 5504 [2020-07-21 22:49:32,859 INFO L226 Difference]: Without dead ends: 3477 [2020-07-21 22:49:32,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 476 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 22:49:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2020-07-21 22:49:32,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3336. [2020-07-21 22:49:32,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-07-21 22:49:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 3793 transitions. [2020-07-21 22:49:32,944 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 3793 transitions. Word has length 239 [2020-07-21 22:49:32,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:32,945 INFO L479 AbstractCegarLoop]: Abstraction has 3336 states and 3793 transitions. [2020-07-21 22:49:32,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 3793 transitions. [2020-07-21 22:49:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-07-21 22:49:32,954 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:32,955 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] [2020-07-21 22:49:33,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:33,170 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:33,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:33,171 INFO L82 PathProgramCache]: Analyzing trace with hash 782782298, now seen corresponding path program 1 times [2020-07-21 22:49:33,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:33,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258756007] [2020-07-21 22:49:33,172 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 22:49:33,354 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:49:33,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:33,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:49:33,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:33,402 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 22:49:33,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:49:33,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258756007] [2020-07-21 22:49:33,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:49:33,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:49:33,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239728718] [2020-07-21 22:49:33,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:49:33,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:33,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:49:33,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:49:33,404 INFO L87 Difference]: Start difference. First operand 3336 states and 3793 transitions. Second operand 3 states. [2020-07-21 22:49:33,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:33,900 INFO L93 Difference]: Finished difference Result 6741 states and 7663 transitions. [2020-07-21 22:49:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:49:33,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2020-07-21 22:49:33,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:33,919 INFO L225 Difference]: With dead ends: 6741 [2020-07-21 22:49:33,919 INFO L226 Difference]: Without dead ends: 3471 [2020-07-21 22:49:33,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 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 22:49:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2020-07-21 22:49:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 3336. [2020-07-21 22:49:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-07-21 22:49:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 3790 transitions. [2020-07-21 22:49:34,005 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 3790 transitions. Word has length 252 [2020-07-21 22:49:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:34,006 INFO L479 AbstractCegarLoop]: Abstraction has 3336 states and 3790 transitions. [2020-07-21 22:49:34,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:49:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 3790 transitions. [2020-07-21 22:49:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-07-21 22:49:34,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:34,016 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 22:49:34,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:34,230 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash 456857651, now seen corresponding path program 1 times [2020-07-21 22:49:34,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:34,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238565586] [2020-07-21 22:49:34,231 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:34,433 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:34,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:34,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:49:34,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:34,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:34,701 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:34,701 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:34,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238565586] [2020-07-21 22:49:34,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:34,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:34,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117008854] [2020-07-21 22:49:34,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:34,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:34,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:34,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:34,854 INFO L87 Difference]: Start difference. First operand 3336 states and 3790 transitions. Second operand 7 states. [2020-07-21 22:49:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:36,197 INFO L93 Difference]: Finished difference Result 6753 states and 7673 transitions. [2020-07-21 22:49:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:49:36,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-07-21 22:49:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:36,214 INFO L225 Difference]: With dead ends: 6753 [2020-07-21 22:49:36,214 INFO L226 Difference]: Without dead ends: 3340 [2020-07-21 22:49:36,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 548 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:49:36,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2020-07-21 22:49:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 3332. [2020-07-21 22:49:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3332 states. [2020-07-21 22:49:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3332 states to 3332 states and 3634 transitions. [2020-07-21 22:49:36,306 INFO L78 Accepts]: Start accepts. Automaton has 3332 states and 3634 transitions. Word has length 275 [2020-07-21 22:49:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:36,307 INFO L479 AbstractCegarLoop]: Abstraction has 3332 states and 3634 transitions. [2020-07-21 22:49:36,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3332 states and 3634 transitions. [2020-07-21 22:49:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-07-21 22:49:36,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:36,351 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 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, 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] [2020-07-21 22:49:36,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:36,565 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:36,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1630512013, now seen corresponding path program 1 times [2020-07-21 22:49:36,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:36,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762349078] [2020-07-21 22:49:36,567 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:36,749 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:36,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:36,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:49:36,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-07-21 22:49:36,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 242 proven. 14 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-21 22:49:36,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762349078] [2020-07-21 22:49:36,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:36,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 22:49:36,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757733453] [2020-07-21 22:49:36,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:49:36,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:36,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:49:36,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:49:36,933 INFO L87 Difference]: Start difference. First operand 3332 states and 3634 transitions. Second operand 8 states. [2020-07-21 22:49:38,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:38,332 INFO L93 Difference]: Finished difference Result 7181 states and 7813 transitions. [2020-07-21 22:49:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:49:38,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-07-21 22:49:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:38,345 INFO L225 Difference]: With dead ends: 7181 [2020-07-21 22:49:38,346 INFO L226 Difference]: Without dead ends: 3089 [2020-07-21 22:49:38,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:49:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2020-07-21 22:49:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1940. [2020-07-21 22:49:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2020-07-21 22:49:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2072 transitions. [2020-07-21 22:49:38,408 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2072 transitions. Word has length 302 [2020-07-21 22:49:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:38,408 INFO L479 AbstractCegarLoop]: Abstraction has 1940 states and 2072 transitions. [2020-07-21 22:49:38,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:49:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2072 transitions. [2020-07-21 22:49:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-07-21 22:49:38,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:38,419 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 22:49:38,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:38,636 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:38,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:38,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1500128134, now seen corresponding path program 1 times [2020-07-21 22:49:38,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:38,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944194091] [2020-07-21 22:49:38,638 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:38,814 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:38,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:38,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 22:49:38,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:38,858 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-07-21 22:49:38,858 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:49:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 362 proven. 6 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:38,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:39,055 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:39,056 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:39,057 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:39,086 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:39,140 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:39,162 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 341 proven. 27 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:39,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944194091] [2020-07-21 22:49:39,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:39,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 22:49:39,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91341433] [2020-07-21 22:49:39,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 22:49:39,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:39,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 22:49:39,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:49:39,319 INFO L87 Difference]: Start difference. First operand 1940 states and 2072 transitions. Second operand 12 states. [2020-07-21 22:49:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:41,550 INFO L93 Difference]: Finished difference Result 3989 states and 4304 transitions. [2020-07-21 22:49:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 22:49:41,551 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 304 [2020-07-21 22:49:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:41,552 INFO L225 Difference]: With dead ends: 3989 [2020-07-21 22:49:41,552 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:49:41,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 610 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-07-21 22:49:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:49:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:49:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:49:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:49:41,563 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 304 [2020-07-21 22:49:41,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:41,563 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:49:41,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 22:49:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:49:41,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:49:41,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:41,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:49:42,718 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 184 [2020-07-21 22:49:42,940 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 174 [2020-07-21 22:49:45,957 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 290 DAG size of output: 109 [2020-07-21 22:49:47,156 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 199 DAG size of output: 65 [2020-07-21 22:49:48,280 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 189 DAG size of output: 65 [2020-07-21 22:49:48,284 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:49:48,285 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 22:49:48,285 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:49:48,285 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 22:49:48,285 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 22:49:48,285 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,285 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,285 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,285 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,285 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,286 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,286 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 22:49:48,286 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 22:49:48,286 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 22:49:48,286 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 22:49:48,286 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 22:49:48,286 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 22:49:48,287 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 22:49:48,287 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 22:49:48,287 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 22:49:48,287 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 22:49:48,287 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,287 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,287 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 22:49:48,288 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 22:49:48,289 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 22:49:48,289 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 22:49:48,289 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 22:49:48,289 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 488) no Hoare annotation was computed. [2020-07-21 22:49:48,289 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 22:49:48,289 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 22:49:48,289 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 22:49:48,289 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 22:49:48,290 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,291 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 22:49:48,292 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 22:49:48,292 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 22:49:48,292 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 22:49:48,292 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 22:49:48,292 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 22:49:48,292 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 22:49:48,292 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 22:49:48,292 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 22:49:48,293 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 22:49:48,294 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 22:49:48,295 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 22:49:48,295 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 22:49:48,295 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,295 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,295 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,295 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,296 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,296 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 22:49:48,296 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 22:49:48,296 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 22:49:48,296 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 22:49:48,296 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 22:49:48,296 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 22:49:48,296 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 22:49:48,296 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 22:49:48,297 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 22:49:48,297 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,297 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,297 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,297 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,297 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,297 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,297 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 22:49:48,297 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,298 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 22:49:48,298 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 22:49:48,298 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 22:49:48,298 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 22:49:48,298 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 22:49:48,298 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 22:49:48,298 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 22:49:48,298 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 22:49:48,298 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 22:49:48,299 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 22:49:48,300 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 22:49:48,300 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 22:49:48,300 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 22:49:48,300 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,300 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,300 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,300 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,300 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,301 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,302 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,302 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,302 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,302 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 22:49:48,302 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 22:49:48,302 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 22:49:48,302 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 22:49:48,302 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 22:49:48,302 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 22:49:48,303 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 22:49:48,303 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 22:49:48,303 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 22:49:48,303 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 22:49:48,303 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse20 (= 1 |old(~a20~0)|))) (let ((.cse17 (= 1 |old(~a17~0)|)) (.cse22 (<= ~a16~0 |old(~a16~0)|)) (.cse21 (<= ~a8~0 |old(~a8~0)|)) (.cse23 (= ~a7~0 |old(~a7~0)|)) (.cse24 (= ~a17~0 |old(~a17~0)|)) (.cse25 (<= |old(~a16~0)| ~a16~0)) (.cse26 (= ~a20~0 |old(~a20~0)|)) (.cse15 (= ~a21~0 |old(~a21~0)|)) (.cse0 (not .cse20)) (.cse18 (= 1 |old(~a21~0)|))) (let ((.cse12 (and .cse0 .cse18)) (.cse1 (not (= 15 |old(~a8~0)|))) (.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|)))) (.cse8 (= 15 ~a8~0)) (.cse10 (and .cse22 .cse21 .cse23 .cse24 .cse25 .cse26 .cse15)) (.cse19 (not (<= 6 |old(~a16~0)|))) (.cse4 (not (< |old(~a16~0)| 6))) (.cse11 (not (<= |old(~a8~0)| 13))) (.cse3 (not (< 4 |old(~a16~0)|))) (.cse5 (not .cse17)) (.cse13 (not (= 1 |old(~a7~0)|))) (.cse14 (= 1 ~a7~0)) (.cse16 (not (<= |old(~a16~0)| 5))) (.cse2 (not (<= |old(~a7~0)| 0))) (.cse7 (not .cse18)) (.cse9 (not (= 8 ~a12~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (or .cse10 .cse11 (not (<= |old(~a16~0)| 4)) .cse12) (or .cse13 .cse12 .cse7 (and .cse14 (= 1 ~a20~0) .cse15)) (or .cse1 .cse2 .cse16 .cse3 (not (<= |old(~a20~0)| 0)) .cse5 .cse6 .cse7 .cse8 .cse9) (or .cse0 .cse10 (and (or .cse5 .cse7) (or .cse17 .cse18)) .cse11 .cse19) (or .cse2 (and (or .cse0 .cse5) (or .cse20 .cse17)) (and .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse15) .cse19 .cse9) (or .cse0 .cse4 .cse11 .cse3 .cse5 (and .cse21 .cse23 .cse24 (<= ~a16~0 5) (< 4 ~a16~0) .cse26 .cse15)) (or .cse13 (and .cse22 .cse14 .cse15) .cse16 .cse7) (or (and .cse22 .cse21 .cse23 .cse24 .cse25 (= 1 ~a21~0) .cse26) .cse2 .cse7 .cse9))))) [2020-07-21 22:49:48,304 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 22:49:48,304 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,304 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,304 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,304 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,304 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 22:49:48,304 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,304 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,304 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 22:49:48,305 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 22:49:48,306 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 22:49:48,307 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 22:49:48,308 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 22:49:48,308 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 22:49:48,308 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,308 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,308 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,308 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,308 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,308 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:49:48,308 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 22:49:48,309 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:49:48,310 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 22:49:48,310 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:49:48,310 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:49:48,310 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)|)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|) (= 15 ~a8~0) (= 5 ~a16~0)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (< |old(~a16~0)| 6)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 22:49:48,310 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:49:48,310 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse3 (= 1 ~a21~0))) (let ((.cse6 (= 1 ~a20~0)) (.cse1 (not .cse3)) (.cse2 (= 1 ~a17~0))) (let ((.cse0 (not .cse2)) (.cse5 (<= 6 ~a16~0)) (.cse8 (<= ~a7~0 0)) (.cse4 (<= ~a8~0 13)) (.cse9 (<= ~a16~0 5)) (.cse10 (= 1 ~a7~0)) (.cse7 (or .cse6 .cse1))) (or (not (= 15 |old(~a8~0)|)) (and (or (and .cse0 .cse1) (and .cse2 .cse3)) .cse4 .cse5 .cse6) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse4 (<= ~a16~0 4) .cse7) (and .cse8 .cse3) (and (or (and (not .cse6) .cse0) (and .cse2 .cse6)) .cse5 .cse8) (not (= 1 |old(~a20~0)|)) (not (< |old(~a16~0)| 6)) (and .cse4 .cse2 .cse9 .cse6) (and .cse10 .cse9 .cse3) (not (= 1 |old(~a21~0)|)) (and .cse10 .cse3 .cse7) (not (= 8 ~a12~0)))))) [2020-07-21 22:49:48,310 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 22:49:48,311 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 22:49:48,311 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse3 (= 1 ~a21~0))) (let ((.cse6 (= 1 ~a20~0)) (.cse1 (not .cse3)) (.cse2 (= 1 ~a17~0))) (let ((.cse0 (not .cse2)) (.cse5 (<= 6 ~a16~0)) (.cse8 (<= ~a7~0 0)) (.cse4 (<= ~a8~0 13)) (.cse9 (<= ~a16~0 5)) (.cse10 (= 1 ~a7~0)) (.cse7 (or .cse6 .cse1))) (or (not (= 15 |old(~a8~0)|)) (and (or (and .cse0 .cse1) (and .cse2 .cse3)) .cse4 .cse5 .cse6) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse4 (<= ~a16~0 4) .cse7) (and .cse8 .cse3) (and (or (and (not .cse6) .cse0) (and .cse2 .cse6)) .cse5 .cse8) (not (= 1 |old(~a20~0)|)) (not (< |old(~a16~0)| 6)) (and .cse4 .cse2 .cse9 .cse6) (and .cse10 .cse9 .cse3) (not (= 1 |old(~a21~0)|)) (and .cse10 .cse3 .cse7) (not (= 8 ~a12~0)))))) [2020-07-21 22:49:48,311 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:49:48,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:49:48 BoogieIcfgContainer [2020-07-21 22:49:48,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:49:48,354 INFO L168 Benchmark]: Toolchain (without parser) took 40196.16 ms. Allocated memory was 138.4 MB in the beginning and 618.1 MB in the end (delta: 479.7 MB). Free memory was 100.3 MB in the beginning and 106.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 498.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:49:48,355 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 22:49:48,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.93 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 99.9 MB in the beginning and 172.6 MB in the end (delta: -72.7 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:49:48,358 INFO L168 Benchmark]: Boogie Preprocessor took 102.11 ms. Allocated memory is still 206.0 MB. Free memory was 172.6 MB in the beginning and 167.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:49:48,359 INFO L168 Benchmark]: RCFGBuilder took 1389.16 ms. Allocated memory was 206.0 MB in the beginning and 238.6 MB in the end (delta: 32.5 MB). Free memory was 167.5 MB in the beginning and 182.4 MB in the end (delta: -14.9 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:49:48,360 INFO L168 Benchmark]: TraceAbstraction took 37945.01 ms. Allocated memory was 238.6 MB in the beginning and 618.1 MB in the end (delta: 379.6 MB). Free memory was 180.9 MB in the beginning and 106.2 MB in the end (delta: 74.7 MB). Peak memory consumption was 478.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:49:48,368 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.93 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 99.9 MB in the beginning and 172.6 MB in the end (delta: -72.7 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.11 ms. Allocated memory is still 206.0 MB. Free memory was 172.6 MB in the beginning and 167.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1389.16 ms. Allocated memory was 206.0 MB in the beginning and 238.6 MB in the end (delta: 32.5 MB). Free memory was 167.5 MB in the beginning and 182.4 MB in the end (delta: -14.9 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37945.01 ms. Allocated memory was 238.6 MB in the beginning and 618.1 MB in the end (delta: 379.6 MB). Free memory was 180.9 MB in the beginning and 106.2 MB in the end (delta: 74.7 MB). Peak memory consumption was 478.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 488]: 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: (((((((((((((!(15 == \old(a8)) || (((((!(1 == a17) && !(1 == a21)) || (1 == a17 && 1 == a21)) && a8 <= 13) && 6 <= a16) && 1 == a20)) || !(\old(a7) <= 0)) || !(4 < \old(a16))) || !(1 == \old(a17))) || ((a8 <= 13 && a16 <= 4) && (1 == a20 || !(1 == a21)))) || (a7 <= 0 && 1 == a21)) || ((((!(1 == a20) && !(1 == a17)) || (1 == a17 && 1 == a20)) && 6 <= a16) && a7 <= 0)) || !(1 == \old(a20))) || !(\old(a16) < 6)) || (((a8 <= 13 && 1 == a17) && a16 <= 5) && 1 == a20)) || ((1 == a7 && a16 <= 5) && 1 == a21)) || !(1 == \old(a21))) || ((1 == a7 && 1 == a21) && (1 == a20 || !(1 == a21)))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 31.3s, OverallIterations: 12, TraceHistogramMax: 8, AutomataDifference: 18.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 662 SDtfs, 7455 SDslu, 647 SDs, 0 SdLazy, 12666 SolverSat, 1558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4455 GetRequests, 4296 SyntacticMatches, 10 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3336occurred 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: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 2775 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 194 PreInvPairs, 260 NumberOfFragments, 779 HoareAnnotationTreeSize, 194 FomulaSimplifications, 20716 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 36174 FormulaSimplificationTreeSizeReductionInter, 5.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 2423 NumberOfCodeBlocks, 1710 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 4342 ConstructedInterpolants, 0 QuantifiedInterpolants, 4143899 SizeOfPredicates, 67 NumberOfNonLiveVariables, 5617 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 3929/4032 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...