/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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:50:09,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:50:09,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:50:09,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:50:09,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:50:09,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:50:09,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:50:09,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:50:09,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:50:09,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:50:09,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:50:09,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:50:09,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:50:09,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:50:09,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:50:09,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:50:09,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:50:09,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:50:09,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:50:09,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:50:09,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:50:09,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:50:09,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:50:09,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:50:09,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:50:09,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:50:09,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:50:09,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:50:09,385 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 22:50:09,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:50:09,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:50:09,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:50:09,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:50:09,402 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:50:09,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:50:09,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:50:09,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:50:09,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:50:09,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:50:09,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:50:09,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:50:09,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:50:09,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:50:09,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:50:09,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:50:09,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:50:09,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:50:09,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:50:09,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:50:09,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:50:09,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:50:09,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:50:09,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:50:09,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:50:09,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:50:09,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:09,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:50:09,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:50:09,406 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 22:50:09,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:50:09,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:50:09,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:50:09,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:50:09,705 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:50:09,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-07-21 22:50:09,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/063c0cfd4/dd6380f6919b4428bc3f16c692c10545/FLAGc4861eb83 [2020-07-21 22:50:10,338 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:50:10,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-07-21 22:50:10,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/063c0cfd4/dd6380f6919b4428bc3f16c692c10545/FLAGc4861eb83 [2020-07-21 22:50:10,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/063c0cfd4/dd6380f6919b4428bc3f16c692c10545 [2020-07-21 22:50:10,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:50:10,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:50:10,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:50:10,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:50:10,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:50:10,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:50:10" (1/1) ... [2020-07-21 22:50:10,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c24edc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:10, skipping insertion in model container [2020-07-21 22:50:10,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:50:10" (1/1) ... [2020-07-21 22:50:10,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:50:10,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:50:11,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:50:11,223 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:50:11,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:50:11,492 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:50:11,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11 WrapperNode [2020-07-21 22:50:11,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:50:11,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:50:11,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:50:11,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:50:11,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11" (1/1) ... [2020-07-21 22:50:11,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11" (1/1) ... [2020-07-21 22:50:11,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11" (1/1) ... [2020-07-21 22:50:11,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11" (1/1) ... [2020-07-21 22:50:11,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11" (1/1) ... [2020-07-21 22:50:11,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11" (1/1) ... [2020-07-21 22:50:11,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11" (1/1) ... [2020-07-21 22:50:11,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:50:11,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:50:11,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:50:11,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:50:11,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11" (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 22:50:11,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:50:11,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:50:11,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:50:11,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:50:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:50:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:50:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:50:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:50:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:50:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:50:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:50:13,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:50:13,012 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:50:13,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:50:13 BoogieIcfgContainer [2020-07-21 22:50:13,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:50:13,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:50:13,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:50:13,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:50:13,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:50:10" (1/3) ... [2020-07-21 22:50:13,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9bb667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:50:13, skipping insertion in model container [2020-07-21 22:50:13,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:11" (2/3) ... [2020-07-21 22:50:13,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9bb667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:50:13, skipping insertion in model container [2020-07-21 22:50:13,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:50:13" (3/3) ... [2020-07-21 22:50:13,038 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-07-21 22:50:13,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:50:13,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:50:13,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:50:13,122 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:50:13,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:50:13,124 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:50:13,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:50:13,124 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:50:13,124 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:50:13,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:50:13,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:50:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 22:50:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-07-21 22:50:13,173 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:13,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:13,175 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:13,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:13,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1377016033, now seen corresponding path program 1 times [2020-07-21 22:50:13,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:13,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883823255] [2020-07-21 22:50:13,193 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 22:50:13,386 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:50:13,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:13,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 22:50:13,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:13,742 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 22:50:13,869 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 22:50:14,336 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 22:50:14,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:50:14,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883823255] [2020-07-21 22:50:14,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:50:14,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 22:50:14,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351839048] [2020-07-21 22:50:14,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:50:14,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:14,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:50:14,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:50:14,363 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 22:50:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:16,059 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 22:50:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:50:16,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 115 [2020-07-21 22:50:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:16,087 INFO L225 Difference]: With dead ends: 472 [2020-07-21 22:50:16,087 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 22:50:16,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 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 22:50:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 22:50:16,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 22:50:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 22:50:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 22:50:16,160 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 115 [2020-07-21 22:50:16,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:16,161 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 22:50:16,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:50:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 22:50:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-21 22:50:16,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:16,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:16,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:16,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:16,381 INFO L82 PathProgramCache]: Analyzing trace with hash -698962844, now seen corresponding path program 1 times [2020-07-21 22:50:16,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:16,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266569256] [2020-07-21 22:50:16,383 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 22:50:16,484 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:50:16,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:16,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 22:50:16,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:17,148 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:50:17,152 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:50:17,153 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:50:17,249 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 22:50:17,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:17,984 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 22:50:18,133 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:50:18,286 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:50:18,424 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 22:50:18,430 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 22:50:18,432 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 22:50:18,434 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:50:18,435 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:50:18,437 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:18,438 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:50:18,441 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:50:18,443 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:50:18,444 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:18,451 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:18,453 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:18,455 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 22:50:18,457 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:50:18,458 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:50:18,459 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:18,462 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:18,463 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:18,465 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:18,466 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:18,467 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:18,468 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:18,477 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:50:18,478 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:18,480 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:50:18,481 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:19,066 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 22:50:19,070 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 22:50:19,071 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:50:19,151 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:50:19,158 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:19,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:19,278 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:19,475 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 22:50:19,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266569256] [2020-07-21 22:50:19,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:19,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 22:50:19,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090028789] [2020-07-21 22:50:19,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 22:50:19,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:19,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 22:50:19,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:50:19,490 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 22:50:20,512 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 22:50:21,042 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 22:50:21,338 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 22:50:21,796 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 22:50:22,021 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 22:50:22,490 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 22:50:24,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:24,601 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 22:50:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 22:50:24,601 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 123 [2020-07-21 22:50:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:24,613 INFO L225 Difference]: With dead ends: 588 [2020-07-21 22:50:24,614 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 22:50:24,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 218 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 22:50:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 22:50:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 22:50:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 22:50:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 22:50:24,660 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 123 [2020-07-21 22:50:24,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:24,661 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 22:50:24,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 22:50:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 22:50:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-21 22:50:24,665 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:24,665 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:24,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:24,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:24,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:24,877 INFO L82 PathProgramCache]: Analyzing trace with hash 860697510, now seen corresponding path program 1 times [2020-07-21 22:50:24,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:24,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219178122] [2020-07-21 22:50:24,878 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 22:50:25,029 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:50:25,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:25,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:25,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:25,093 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 22:50:25,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:50:25,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219178122] [2020-07-21 22:50:25,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:50:25,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:50:25,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76076892] [2020-07-21 22:50:25,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:50:25,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:25,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:50:25,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:50:25,097 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 22:50:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:25,603 INFO L93 Difference]: Finished difference Result 1044 states and 1434 transitions. [2020-07-21 22:50:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:50:25,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-07-21 22:50:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:25,611 INFO L225 Difference]: With dead ends: 1044 [2020-07-21 22:50:25,611 INFO L226 Difference]: Without dead ends: 693 [2020-07-21 22:50:25,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 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 22:50:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-07-21 22:50:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2020-07-21 22:50:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-07-21 22:50:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 869 transitions. [2020-07-21 22:50:25,651 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 869 transitions. Word has length 126 [2020-07-21 22:50:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:25,651 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 869 transitions. [2020-07-21 22:50:25,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:50:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 869 transitions. [2020-07-21 22:50:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-21 22:50:25,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:25,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:25,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:25,874 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:25,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:25,875 INFO L82 PathProgramCache]: Analyzing trace with hash 475291139, now seen corresponding path program 1 times [2020-07-21 22:50:25,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:25,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594952534] [2020-07-21 22:50:25,876 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 22:50:25,980 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:50:25,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:25,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:25,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:26,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:26,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594952534] [2020-07-21 22:50:26,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:26,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:26,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991075566] [2020-07-21 22:50:26,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:26,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:26,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:26,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:26,140 INFO L87 Difference]: Start difference. First operand 693 states and 869 transitions. Second operand 7 states. [2020-07-21 22:50:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:27,545 INFO L93 Difference]: Finished difference Result 2372 states and 3098 transitions. [2020-07-21 22:50:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:50:27,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-07-21 22:50:27,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:27,559 INFO L225 Difference]: With dead ends: 2372 [2020-07-21 22:50:27,559 INFO L226 Difference]: Without dead ends: 1745 [2020-07-21 22:50:27,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:50:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2020-07-21 22:50:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1545. [2020-07-21 22:50:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-07-21 22:50:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1983 transitions. [2020-07-21 22:50:27,622 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1983 transitions. Word has length 146 [2020-07-21 22:50:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:27,623 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 1983 transitions. [2020-07-21 22:50:27,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1983 transitions. [2020-07-21 22:50:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-21 22:50:27,630 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:27,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:27,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:27,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash 224154203, now seen corresponding path program 1 times [2020-07-21 22:50:27,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:27,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490621696] [2020-07-21 22:50:27,847 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 22:50:27,973 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:27,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:27,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:50:27,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:28,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:28,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490621696] [2020-07-21 22:50:28,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:28,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 22:50:28,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006142374] [2020-07-21 22:50:28,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:50:28,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:28,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:50:28,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:50:28,108 INFO L87 Difference]: Start difference. First operand 1545 states and 1983 transitions. Second operand 6 states. [2020-07-21 22:50:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:28,970 INFO L93 Difference]: Finished difference Result 3223 states and 4220 transitions. [2020-07-21 22:50:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:50:28,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-07-21 22:50:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:28,984 INFO L225 Difference]: With dead ends: 3223 [2020-07-21 22:50:28,984 INFO L226 Difference]: Without dead ends: 1744 [2020-07-21 22:50:28,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:50:28,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-07-21 22:50:29,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1565. [2020-07-21 22:50:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-07-21 22:50:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1928 transitions. [2020-07-21 22:50:29,070 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1928 transitions. Word has length 151 [2020-07-21 22:50:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:29,071 INFO L479 AbstractCegarLoop]: Abstraction has 1565 states and 1928 transitions. [2020-07-21 22:50:29,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:50:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1928 transitions. [2020-07-21 22:50:29,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-21 22:50:29,076 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:29,076 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:29,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:29,277 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:29,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:29,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1104528988, now seen corresponding path program 1 times [2020-07-21 22:50:29,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:29,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140345822] [2020-07-21 22:50:29,278 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 22:50:29,397 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:50:29,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:29,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:50:29,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 22:50:29,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:29,760 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 22:50:29,810 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:29,811 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:29,814 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:29,815 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:29,816 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:29,816 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:29,817 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[7, 2, 1] term [2020-07-21 22:50:29,817 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 22:50:29,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140345822] [2020-07-21 22:50:29,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:29,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:29,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082532345] [2020-07-21 22:50:29,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:29,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:29,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:29,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:29,923 INFO L87 Difference]: Start difference. First operand 1565 states and 1928 transitions. Second operand 7 states. [2020-07-21 22:50:31,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:31,258 INFO L93 Difference]: Finished difference Result 3804 states and 4698 transitions. [2020-07-21 22:50:31,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:50:31,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-07-21 22:50:31,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:31,272 INFO L225 Difference]: With dead ends: 3804 [2020-07-21 22:50:31,272 INFO L226 Difference]: Without dead ends: 2027 [2020-07-21 22:50:31,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 318 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 22:50:31,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-07-21 22:50:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1690. [2020-07-21 22:50:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-07-21 22:50:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 1959 transitions. [2020-07-21 22:50:31,337 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 1959 transitions. Word has length 161 [2020-07-21 22:50:31,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:31,338 INFO L479 AbstractCegarLoop]: Abstraction has 1690 states and 1959 transitions. [2020-07-21 22:50:31,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 1959 transitions. [2020-07-21 22:50:31,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-07-21 22:50:31,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:31,344 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:31,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:31,558 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:31,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:31,558 INFO L82 PathProgramCache]: Analyzing trace with hash 203426984, now seen corresponding path program 1 times [2020-07-21 22:50:31,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:31,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768586123] [2020-07-21 22:50:31,559 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 22:50:31,713 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:31,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:31,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:50:31,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 22:50:31,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:31,976 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 22:50:32,027 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:32,028 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:32,029 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:32,029 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:32,030 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:32,031 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:32,031 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:32,032 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:32,032 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:32,033 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 22:50:32,033 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 84 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 22:50:32,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768586123] [2020-07-21 22:50:32,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:32,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:32,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769589362] [2020-07-21 22:50:32,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:32,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:32,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:32,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:32,157 INFO L87 Difference]: Start difference. First operand 1690 states and 1959 transitions. Second operand 7 states. [2020-07-21 22:50:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:33,412 INFO L93 Difference]: Finished difference Result 4581 states and 5398 transitions. [2020-07-21 22:50:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:50:33,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-07-21 22:50:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:33,431 INFO L225 Difference]: With dead ends: 4581 [2020-07-21 22:50:33,431 INFO L226 Difference]: Without dead ends: 2812 [2020-07-21 22:50:33,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 380 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 22:50:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2020-07-21 22:50:33,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1839. [2020-07-21 22:50:33,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2020-07-21 22:50:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2043 transitions. [2020-07-21 22:50:33,547 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2043 transitions. Word has length 191 [2020-07-21 22:50:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:33,548 INFO L479 AbstractCegarLoop]: Abstraction has 1839 states and 2043 transitions. [2020-07-21 22:50:33,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2043 transitions. [2020-07-21 22:50:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-07-21 22:50:33,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:33,554 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:33,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:33,769 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:33,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:33,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1335584305, now seen corresponding path program 1 times [2020-07-21 22:50:33,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:33,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205545753] [2020-07-21 22:50:33,771 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 22:50:33,889 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:33,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:33,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:50:33,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:33,916 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:50:33,916 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:50:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-07-21 22:50:33,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:34,181 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:50:34,223 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:34,224 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:34,224 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:34,225 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:34,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:34,227 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:34,228 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[7, 2, 1] term [2020-07-21 22:50:34,228 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:34,252 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:34,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:34,305 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 108 proven. 47 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 22:50:34,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205545753] [2020-07-21 22:50:34,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:34,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 22:50:34,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486264234] [2020-07-21 22:50:34,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:50:34,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:34,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:50:34,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:50:34,479 INFO L87 Difference]: Start difference. First operand 1839 states and 2043 transitions. Second operand 8 states. [2020-07-21 22:50:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:35,446 INFO L93 Difference]: Finished difference Result 3759 states and 4234 transitions. [2020-07-21 22:50:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:50:35,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-07-21 22:50:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:35,456 INFO L225 Difference]: With dead ends: 3759 [2020-07-21 22:50:35,456 INFO L226 Difference]: Without dead ends: 1845 [2020-07-21 22:50:35,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 421 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 22:50:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2020-07-21 22:50:35,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1686. [2020-07-21 22:50:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2020-07-21 22:50:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 1876 transitions. [2020-07-21 22:50:35,511 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 1876 transitions. Word has length 213 [2020-07-21 22:50:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:35,511 INFO L479 AbstractCegarLoop]: Abstraction has 1686 states and 1876 transitions. [2020-07-21 22:50:35,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:50:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 1876 transitions. [2020-07-21 22:50:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-07-21 22:50:35,518 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:35,518 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:35,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:35,733 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:35,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:35,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1832682519, now seen corresponding path program 1 times [2020-07-21 22:50:35,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:35,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980717340] [2020-07-21 22:50:35,735 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 22:50:35,873 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:35,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:35,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:35,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 22:50:35,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 162 proven. 33 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 22:50:36,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980717340] [2020-07-21 22:50:36,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:36,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:36,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870674111] [2020-07-21 22:50:36,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:36,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:36,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:36,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:36,040 INFO L87 Difference]: Start difference. First operand 1686 states and 1876 transitions. Second operand 7 states. [2020-07-21 22:50:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:37,177 INFO L93 Difference]: Finished difference Result 3445 states and 3852 transitions. [2020-07-21 22:50:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:50:37,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-07-21 22:50:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:37,187 INFO L225 Difference]: With dead ends: 3445 [2020-07-21 22:50:37,187 INFO L226 Difference]: Without dead ends: 1964 [2020-07-21 22:50:37,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:50:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-07-21 22:50:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1682. [2020-07-21 22:50:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-07-21 22:50:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1836 transitions. [2020-07-21 22:50:37,234 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1836 transitions. Word has length 242 [2020-07-21 22:50:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:37,235 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 1836 transitions. [2020-07-21 22:50:37,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:37,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1836 transitions. [2020-07-21 22:50:37,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-21 22:50:37,241 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:37,242 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:37,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:37,457 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:37,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:37,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1896129317, now seen corresponding path program 1 times [2020-07-21 22:50:37,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:37,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725118014] [2020-07-21 22:50:37,459 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 22:50:37,579 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:37,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:37,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:50:37,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 22:50:37,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:37,939 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 22:50:38,010 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:38,011 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:38,012 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:50:38,012 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:38,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:38,016 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:38,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 181 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-07-21 22:50:38,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725118014] [2020-07-21 22:50:38,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:38,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:38,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654110555] [2020-07-21 22:50:38,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:38,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:38,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:38,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:38,250 INFO L87 Difference]: Start difference. First operand 1682 states and 1836 transitions. Second operand 7 states. [2020-07-21 22:50:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:39,504 INFO L93 Difference]: Finished difference Result 4134 states and 4569 transitions. [2020-07-21 22:50:39,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:50:39,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-07-21 22:50:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:39,517 INFO L225 Difference]: With dead ends: 4134 [2020-07-21 22:50:39,517 INFO L226 Difference]: Without dead ends: 2518 [2020-07-21 22:50:39,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 536 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 22:50:39,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2020-07-21 22:50:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2512. [2020-07-21 22:50:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2512 states. [2020-07-21 22:50:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 2764 transitions. [2020-07-21 22:50:39,582 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 2764 transitions. Word has length 269 [2020-07-21 22:50:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:39,582 INFO L479 AbstractCegarLoop]: Abstraction has 2512 states and 2764 transitions. [2020-07-21 22:50:39,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 2764 transitions. [2020-07-21 22:50:39,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-07-21 22:50:39,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:39,598 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:39,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:39,812 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:39,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1691239914, now seen corresponding path program 1 times [2020-07-21 22:50:39,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:39,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407283421] [2020-07-21 22:50:39,814 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 22:50:39,992 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:50:39,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:39,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:50:40,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:40,028 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 2, 1] term [2020-07-21 22:50:40,028 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:50:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:50:40,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:40,203 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:40,204 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:50:40,233 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:50:40,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407283421] [2020-07-21 22:50:40,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:40,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:40,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553798872] [2020-07-21 22:50:40,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:40,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:40,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:40,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:40,452 INFO L87 Difference]: Start difference. First operand 2512 states and 2764 transitions. Second operand 7 states. [2020-07-21 22:50:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:41,391 INFO L93 Difference]: Finished difference Result 4567 states and 5045 transitions. [2020-07-21 22:50:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:50:41,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-07-21 22:50:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:41,403 INFO L225 Difference]: With dead ends: 4567 [2020-07-21 22:50:41,404 INFO L226 Difference]: Without dead ends: 2540 [2020-07-21 22:50:41,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 560 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 22:50:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2020-07-21 22:50:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2518. [2020-07-21 22:50:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2518 states. [2020-07-21 22:50:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 2747 transitions. [2020-07-21 22:50:41,469 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 2747 transitions. Word has length 282 [2020-07-21 22:50:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:41,469 INFO L479 AbstractCegarLoop]: Abstraction has 2518 states and 2747 transitions. [2020-07-21 22:50:41,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 2747 transitions. [2020-07-21 22:50:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-07-21 22:50:41,482 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:41,482 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:41,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:41,696 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:41,696 INFO L82 PathProgramCache]: Analyzing trace with hash -160157762, now seen corresponding path program 1 times [2020-07-21 22:50:41,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:41,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999493647] [2020-07-21 22:50:41,697 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 22:50:41,890 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:50:41,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:41,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:50:41,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:41,925 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-07-21 22:50:41,925 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:50:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:50:42,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:42,150 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:42,151 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:42,152 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:42,152 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:42,152 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:42,153 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:42,153 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:42,154 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:42,180 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:50:42,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999493647] [2020-07-21 22:50:42,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:42,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:42,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798708209] [2020-07-21 22:50:42,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:42,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:42,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:42,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:42,361 INFO L87 Difference]: Start difference. First operand 2518 states and 2747 transitions. Second operand 7 states. [2020-07-21 22:50:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:43,351 INFO L93 Difference]: Finished difference Result 4990 states and 5492 transitions. [2020-07-21 22:50:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:50:43,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-07-21 22:50:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:43,363 INFO L225 Difference]: With dead ends: 4990 [2020-07-21 22:50:43,363 INFO L226 Difference]: Without dead ends: 2538 [2020-07-21 22:50:43,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 600 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 22:50:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2020-07-21 22:50:43,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2516. [2020-07-21 22:50:43,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-07-21 22:50:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 2710 transitions. [2020-07-21 22:50:43,433 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 2710 transitions. Word has length 302 [2020-07-21 22:50:43,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:43,434 INFO L479 AbstractCegarLoop]: Abstraction has 2516 states and 2710 transitions. [2020-07-21 22:50:43,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 2710 transitions. [2020-07-21 22:50:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-07-21 22:50:43,446 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:43,447 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, 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, 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] [2020-07-21 22:50:43,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:43,662 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:43,662 INFO L82 PathProgramCache]: Analyzing trace with hash 890362723, now seen corresponding path program 1 times [2020-07-21 22:50:43,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:43,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077407107] [2020-07-21 22:50:43,663 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:43,858 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:50:43,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:43,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:43,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-07-21 22:50:43,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:50:43,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077407107] [2020-07-21 22:50:43,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:50:43,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:50:43,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244963371] [2020-07-21 22:50:43,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:50:43,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:43,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:50:43,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:50:43,950 INFO L87 Difference]: Start difference. First operand 2516 states and 2710 transitions. Second operand 3 states. [2020-07-21 22:50:44,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:44,442 INFO L93 Difference]: Finished difference Result 4964 states and 5348 transitions. [2020-07-21 22:50:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:50:44,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 311 [2020-07-21 22:50:44,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:44,444 INFO L225 Difference]: With dead ends: 4964 [2020-07-21 22:50:44,444 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:50:44,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 309 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 22:50:44,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:50:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:50:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:50:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:50:44,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 311 [2020-07-21 22:50:44,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:44,454 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:50:44,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:50:44,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:50:44,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:50:44,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:44,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:50:45,363 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 213 [2020-07-21 22:50:45,601 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 202 [2020-07-21 22:50:47,523 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 225 DAG size of output: 121 [2020-07-21 22:50:48,469 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 68 [2020-07-21 22:50:49,424 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 68 [2020-07-21 22:50:49,428 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:50:49,428 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 22:50:49,428 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:50:49,429 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 22:50:49,429 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 22:50:49,429 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,429 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,429 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,429 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,430 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,430 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,430 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 22:50:49,430 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 22:50:49,430 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 22:50:49,430 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 22:50:49,430 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 22:50:49,430 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 22:50:49,430 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,431 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 22:50:49,432 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 22:50:49,432 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 22:50:49,432 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 22:50:49,432 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 22:50:49,432 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 22:50:49,432 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 22:50:49,432 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 22:50:49,432 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 22:50:49,432 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 22:50:49,433 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 22:50:49,433 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 503) no Hoare annotation was computed. [2020-07-21 22:50:49,433 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 22:50:49,433 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 22:50:49,433 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 22:50:49,433 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 22:50:49,433 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,434 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,434 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,434 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,434 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,434 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 22:50:49,434 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 22:50:49,434 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 22:50:49,434 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 22:50:49,435 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 22:50:49,435 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 22:50:49,435 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 22:50:49,435 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 22:50:49,435 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 22:50:49,435 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,435 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,435 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,436 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,436 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,436 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 22:50:49,436 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 22:50:49,436 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 22:50:49,436 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 22:50:49,436 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 22:50:49,436 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 22:50:49,437 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 22:50:49,437 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 22:50:49,437 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 22:50:49,437 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 22:50:49,437 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 22:50:49,437 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 22:50:49,437 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 22:50:49,438 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,438 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,438 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,438 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,438 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,438 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 22:50:49,438 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 22:50:49,438 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 22:50:49,439 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 22:50:49,439 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 22:50:49,439 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 22:50:49,439 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 22:50:49,439 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 22:50:49,439 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 22:50:49,439 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,439 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,439 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,440 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,440 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,440 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,440 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 22:50:49,440 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,440 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 22:50:49,440 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 22:50:49,440 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 22:50:49,440 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 22:50:49,441 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 22:50:49,441 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 22:50:49,441 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 22:50:49,441 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 22:50:49,441 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 22:50:49,441 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 22:50:49,441 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 22:50:49,441 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 22:50:49,442 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 22:50:49,442 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,442 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,442 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,442 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,442 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,442 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 22:50:49,442 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 22:50:49,442 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 22:50:49,443 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 22:50:49,443 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 22:50:49,443 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 22:50:49,443 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 22:50:49,443 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 22:50:49,443 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,443 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,443 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,443 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,444 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,444 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 22:50:49,444 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 22:50:49,444 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 22:50:49,444 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 22:50:49,444 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 22:50:49,444 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 22:50:49,444 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 22:50:49,444 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 22:50:49,445 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 22:50:49,445 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 22:50:49,445 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse29 (= 8 ~a12~0)) (.cse17 (not (<= |old(~a8~0)| 13)))) (let ((.cse8 (= 1 |old(~a21~0)|)) (.cse19 (= ~a7~0 |old(~a7~0)|)) (.cse14 (= ~a20~0 |old(~a20~0)|)) (.cse12 (<= ~a16~0 |old(~a16~0)|)) (.cse20 (<= ~a8~0 13)) (.cse28 (<= ~a16~0 4)) (.cse7 (= ~a21~0 |old(~a21~0)|)) (.cse27 (or .cse17 (not (<= |old(~a16~0)| 4)))) (.cse23 (not (<= |old(~a7~0)| 0))) (.cse26 (not .cse29))) (let ((.cse13 (= 1 ~a7~0)) (.cse0 (and .cse27 (or .cse23 .cse17 .cse26))) (.cse2 (and .cse19 .cse14 (or (and .cse12 .cse20 (<= ~a7~0 0) .cse29) (and .cse12 .cse20 .cse28)) .cse7)) (.cse4 (or (and .cse12 .cse19 .cse20 .cse14 .cse28) (and .cse12 .cse19 .cse20 (<= 6 ~a16~0) .cse14))) (.cse21 (= 1 ~a17~0)) (.cse9 (and (or .cse17 (not (<= 6 |old(~a16~0)|))) .cse27)) (.cse11 (not (= 1 |old(~a7~0)|))) (.cse10 (not (<= |old(~a17~0)| 0))) (.cse5 (= ~a17~0 |old(~a17~0)|)) (.cse6 (<= |old(~a16~0)| ~a16~0)) (.cse1 (not (= 1 |old(~a20~0)|))) (.cse22 (not (= 15 |old(~a8~0)|))) (.cse15 (not (<= |old(~a16~0)| 5))) (.cse18 (not (= 1 |old(~a17~0)|))) (.cse24 (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|)))) (.cse16 (not (<= 5 |old(~a16~0)|))) (.cse3 (not .cse8)) (.cse25 (= 15 ~a8~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or (and .cse4 .cse5 .cse6 .cse7) .cse8 .cse9 .cse10) (or .cse11 (and .cse12 .cse13 .cse5 .cse6 .cse14 .cse7) .cse15 .cse3 .cse10) (or .cse11 (and .cse12 .cse13 (<= 5 ~a16~0) .cse7) .cse16 .cse3) (or .cse15 .cse17 .cse18 .cse16 (and .cse19 .cse20 .cse21 (<= ~a16~0 5) (< 4 ~a16~0) .cse14 .cse7)) (or .cse0 .cse2 .cse15 .cse3) (or (and .cse4 .cse6 .cse21 .cse7) .cse15 .cse18 .cse9) (or (not (= 5 |old(~a16~0)|)) .cse22 .cse23 (not (<= |old(~a20~0)| 0)) .cse18 .cse24 .cse3 .cse25 .cse26) (or .cse11 .cse15 (not (< 4 |old(~a16~0)|)) .cse14 .cse3) (or (and .cse12 .cse19 .cse5 .cse6 .cse14 .cse7) .cse23 .cse3 .cse10 .cse26) (or .cse23 (and .cse12 .cse19 .cse5 .cse6 (= 1 ~a21~0) .cse14) .cse18 .cse3 .cse26) (or .cse1 .cse22 .cse23 .cse15 .cse18 .cse24 .cse16 .cse3 .cse25 .cse26))))) [2020-07-21 22:50:49,445 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 22:50:49,446 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,446 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,446 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,446 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,446 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 22:50:49,446 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,446 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,446 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 22:50:49,447 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 22:50:49,447 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 22:50:49,447 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 22:50:49,447 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 22:50:49,447 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 22:50:49,447 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 22:50:49,447 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 22:50:49,447 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 22:50:49,447 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,448 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 22:50:49,449 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 22:50:49,449 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 22:50:49,449 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 22:50:49,449 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 22:50:49,449 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 22:50:49,449 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 22:50:49,449 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 22:50:49,449 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 22:50:49,449 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 22:50:49,450 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 22:50:49,450 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 22:50:49,450 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 22:50:49,450 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 22:50:49,450 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,450 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,450 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,450 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,450 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,451 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:49,451 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 22:50:49,451 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 22:50:49,451 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 22:50:49,451 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 22:50:49,451 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 22:50:49,451 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 22:50:49,451 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 22:50:49,451 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 22:50:49,452 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 22:50:49,452 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 22:50:49,452 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:50:49,452 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 22:50:49,452 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:50:49,452 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:50:49,452 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 (<= |old(~a16~0)| 5)) (not (= 1 |old(~a17~0)|)) (not (<= 5 |old(~a16~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 22:50:49,452 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:50:49,453 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse4 (<= ~a8~0 13))) (let ((.cse3 (and .cse4 (<= ~a16~0 4))) (.cse1 (<= ~a7~0 0)) (.cse11 (= 8 ~a12~0))) (let ((.cse6 (= 1 ~a17~0)) (.cse8 (or .cse3 (and .cse4 .cse1 .cse11))) (.cse9 (= 1 ~a7~0)) (.cse10 (not (= 1 |old(~a7~0)|))) (.cse0 (<= ~a17~0 0)) (.cse7 (<= ~a16~0 5)) (.cse5 (< 4 |old(~a16~0)|)) (.cse2 (= 1 ~a21~0))) (or (and .cse0 .cse1 .cse2) (and .cse0 (or .cse3 (and .cse4 (<= 6 ~a16~0))) (not .cse2)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not .cse5) (not (= 1 |old(~a17~0)|)) (and .cse1 .cse6 .cse2) (and .cse4 .cse6 .cse7) (and .cse8 .cse7 .cse2) (not (= 1 |old(~a20~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse9 .cse10 .cse7 .cse5 .cse2 (< 4 ~a16~0)) (and .cse8 .cse2 (= 1 ~a20~0)) (not (= 1 |old(~a21~0)|)) (and .cse9 .cse10 .cse0 .cse7 .cse5 .cse2) (not .cse11))))) [2020-07-21 22:50:49,453 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 22:50:49,453 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 22:50:49,453 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse4 (<= ~a8~0 13))) (let ((.cse3 (and .cse4 (<= ~a16~0 4))) (.cse1 (<= ~a7~0 0)) (.cse11 (= 8 ~a12~0))) (let ((.cse6 (= 1 ~a17~0)) (.cse8 (or .cse3 (and .cse4 .cse1 .cse11))) (.cse9 (= 1 ~a7~0)) (.cse10 (not (= 1 |old(~a7~0)|))) (.cse0 (<= ~a17~0 0)) (.cse7 (<= ~a16~0 5)) (.cse5 (< 4 |old(~a16~0)|)) (.cse2 (= 1 ~a21~0))) (or (and .cse0 .cse1 .cse2) (and .cse0 (or .cse3 (and .cse4 (<= 6 ~a16~0))) (not .cse2)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not .cse5) (not (= 1 |old(~a17~0)|)) (and .cse1 .cse6 .cse2) (and .cse4 .cse6 .cse7) (and .cse8 .cse7 .cse2) (not (= 1 |old(~a20~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse9 .cse10 .cse7 .cse5 .cse2 (< 4 ~a16~0)) (and .cse8 .cse2 (= 1 ~a20~0)) (not (= 1 |old(~a21~0)|)) (and .cse9 .cse10 .cse0 .cse7 .cse5 .cse2) (not .cse11))))) [2020-07-21 22:50:49,453 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:50:49,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:50:49 BoogieIcfgContainer [2020-07-21 22:50:49,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:50:49,478 INFO L168 Benchmark]: Toolchain (without parser) took 38859.68 ms. Allocated memory was 137.4 MB in the beginning and 637.0 MB in the end (delta: 499.6 MB). Free memory was 100.8 MB in the beginning and 124.7 MB in the end (delta: -23.8 MB). Peak memory consumption was 494.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:49,479 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:50:49,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 869.97 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 100.4 MB in the beginning and 170.2 MB in the end (delta: -69.8 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:49,480 INFO L168 Benchmark]: Boogie Preprocessor took 189.76 ms. Allocated memory is still 203.9 MB. Free memory was 170.2 MB in the beginning and 165.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:49,481 INFO L168 Benchmark]: RCFGBuilder took 1341.23 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.1 MB in the beginning and 179.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:49,481 INFO L168 Benchmark]: TraceAbstraction took 36447.80 ms. Allocated memory was 235.4 MB in the beginning and 637.0 MB in the end (delta: 401.6 MB). Free memory was 179.2 MB in the beginning and 124.7 MB in the end (delta: 54.5 MB). Peak memory consumption was 474.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:49,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 869.97 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 100.4 MB in the beginning and 170.2 MB in the end (delta: -69.8 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 189.76 ms. Allocated memory is still 203.9 MB. Free memory was 170.2 MB in the beginning and 165.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1341.23 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.1 MB in the beginning and 179.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36447.80 ms. Allocated memory was 235.4 MB in the beginning and 637.0 MB in the end (delta: 401.6 MB). Free memory was 179.2 MB in the beginning and 124.7 MB in the end (delta: 54.5 MB). Peak memory consumption was 474.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 503]: 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: ((((((((((((((((a17 <= 0 && a7 <= 0) && 1 == a21) || ((a17 <= 0 && ((a8 <= 13 && a16 <= 4) || (a8 <= 13 && 6 <= a16))) && !(1 == a21))) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || !(4 < \old(a16))) || !(1 == \old(a17))) || ((a7 <= 0 && 1 == a17) && 1 == a21)) || ((a8 <= 13 && 1 == a17) && a16 <= 5)) || ((((a8 <= 13 && a16 <= 4) || ((a8 <= 13 && a7 <= 0) && 8 == a12)) && a16 <= 5) && 1 == a21)) || !(1 == \old(a20))) || !(\old(a16) <= 5)) || (((((1 == a7 && !(1 == \old(a7))) && a16 <= 5) && 4 < \old(a16)) && 1 == a21) && 4 < a16)) || ((((a8 <= 13 && a16 <= 4) || ((a8 <= 13 && a7 <= 0) && 8 == a12)) && 1 == a21) && 1 == a20)) || !(1 == \old(a21))) || (((((1 == a7 && !(1 == \old(a7))) && a17 <= 0) && a16 <= 5) && 4 < \old(a16)) && 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: 31.5s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 676 SDtfs, 6593 SDslu, 646 SDs, 0 SdLazy, 12690 SolverSat, 1519 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4788 GetRequests, 4637 SyntacticMatches, 12 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2518occurred in iteration=11, 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, 13 MinimizatonAttempts, 2214 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 171 PreInvPairs, 223 NumberOfFragments, 1031 HoareAnnotationTreeSize, 171 FomulaSimplifications, 20445 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14985 FormulaSimplificationTreeSizeReductionInter, 3.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 2632 NumberOfCodeBlocks, 1674 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 4689 ConstructedInterpolants, 0 QuantifiedInterpolants, 4367025 SizeOfPredicates, 64 NumberOfNonLiveVariables, 5797 ConjunctsInSsa, 214 ConjunctsInUnsatCore, 23 InterpolantComputations, 3 PerfectInterpolantSequences, 3790/3949 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...