/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/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:02:55,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:02:55,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:02:55,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 23:02:55,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:02:55,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:02:55,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:02:55,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:02:55,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:02:55,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:02:55,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:02:55,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:02:55,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:02:55,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:02:55,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:02:55,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:02:55,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:02:55,422 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 23:02:55,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:02:55,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:02:55,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:02:55,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:02:55,464 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:02:55,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:02:55,465 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:02:55,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:02:55,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:02:55,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:02:55,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:02:55,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:02:55,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:02:55,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:02:55,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:02:55,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:02:55,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:02:55,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:02:55,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:02:55,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:02:55,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:02:55,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:02:55,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:02:55,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:02:55,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:02:55,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:02:55,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:02:55,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:02:55,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:02:55,473 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 23:02:55,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:02:55,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:02:55,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:02:55,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:02:55,824 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:02:55,824 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-07-21 23:02:55,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fba405c/bcdd8255eeeb41dfa491c26c95a5e8e9/FLAGb4326c3dd [2020-07-21 23:02:56,533 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:02:56,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-07-21 23:02:56,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fba405c/bcdd8255eeeb41dfa491c26c95a5e8e9/FLAGb4326c3dd [2020-07-21 23:02:56,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4fba405c/bcdd8255eeeb41dfa491c26c95a5e8e9 [2020-07-21 23:02:56,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:02:56,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:02:56,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:02:56,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:02:56,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:02:56,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:02:56" (1/1) ... [2020-07-21 23:02:56,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376da73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:56, skipping insertion in model container [2020-07-21 23:02:56,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:02:56" (1/1) ... [2020-07-21 23:02:56,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:02:56,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:02:57,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:02:57,501 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:02:57,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:02:57,858 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:02:57,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57 WrapperNode [2020-07-21 23:02:57,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:02:57,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:02:57,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:02:57,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:02:57,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57" (1/1) ... [2020-07-21 23:02:57,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57" (1/1) ... [2020-07-21 23:02:57,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57" (1/1) ... [2020-07-21 23:02:57,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57" (1/1) ... [2020-07-21 23:02:57,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57" (1/1) ... [2020-07-21 23:02:58,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57" (1/1) ... [2020-07-21 23:02:58,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57" (1/1) ... [2020-07-21 23:02:58,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:02:58,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:02:58,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:02:58,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:02:58,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57" (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 23:02:58,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:02:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:02:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 23:02:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:02:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 23:02:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:02:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:02:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 23:02:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:02:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:02:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:02:59,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:02:59,768 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 23:02:59,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:02:59 BoogieIcfgContainer [2020-07-21 23:02:59,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:02:59,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:02:59,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:02:59,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:02:59,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:02:56" (1/3) ... [2020-07-21 23:02:59,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ca1d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:02:59, skipping insertion in model container [2020-07-21 23:02:59,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:57" (2/3) ... [2020-07-21 23:02:59,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ca1d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:02:59, skipping insertion in model container [2020-07-21 23:02:59,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:02:59" (3/3) ... [2020-07-21 23:02:59,784 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-07-21 23:02:59,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:02:59,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:02:59,819 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:02:59,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:02:59,849 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:02:59,849 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:02:59,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:02:59,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:02:59,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:02:59,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:02:59,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:02:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-07-21 23:02:59,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 23:02:59,886 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:02:59,888 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] [2020-07-21 23:02:59,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:02:59,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:02:59,895 INFO L82 PathProgramCache]: Analyzing trace with hash -736368013, now seen corresponding path program 1 times [2020-07-21 23:02:59,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:02:59,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254285041] [2020-07-21 23:02:59,906 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 23:03:00,029 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:00,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:00,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:03:00,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:00,127 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 23:03:00,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:00,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254285041] [2020-07-21 23:03:00,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:00,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:03:00,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902692850] [2020-07-21 23:03:00,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:03:00,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:00,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:03:00,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:00,163 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 3 states. [2020-07-21 23:03:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:01,726 INFO L93 Difference]: Finished difference Result 688 states and 1223 transitions. [2020-07-21 23:03:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:03:01,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-07-21 23:03:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:01,767 INFO L225 Difference]: With dead ends: 688 [2020-07-21 23:03:01,767 INFO L226 Difference]: Without dead ends: 372 [2020-07-21 23:03:01,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 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 23:03:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-07-21 23:03:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2020-07-21 23:03:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-07-21 23:03:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 560 transitions. [2020-07-21 23:03:01,894 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 560 transitions. Word has length 40 [2020-07-21 23:03:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:01,894 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 560 transitions. [2020-07-21 23:03:01,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:03:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 560 transitions. [2020-07-21 23:03:01,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-21 23:03:01,901 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:01,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:02,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:02,115 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:02,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:02,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1103541129, now seen corresponding path program 1 times [2020-07-21 23:03:02,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:02,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641880079] [2020-07-21 23:03:02,118 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 23:03:02,234 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:03:02,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:02,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:03:02,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:03:02,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:02,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641880079] [2020-07-21 23:03:02,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:02,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:03:02,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362796557] [2020-07-21 23:03:02,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:03:02,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:02,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:03:02,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:03:02,303 INFO L87 Difference]: Start difference. First operand 372 states and 560 transitions. Second operand 5 states. [2020-07-21 23:03:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:03,740 INFO L93 Difference]: Finished difference Result 1124 states and 1723 transitions. [2020-07-21 23:03:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:03:03,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-07-21 23:03:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:03,749 INFO L225 Difference]: With dead ends: 1124 [2020-07-21 23:03:03,749 INFO L226 Difference]: Without dead ends: 758 [2020-07-21 23:03:03,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:03:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-07-21 23:03:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 744. [2020-07-21 23:03:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-07-21 23:03:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1012 transitions. [2020-07-21 23:03:03,825 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1012 transitions. Word has length 119 [2020-07-21 23:03:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:03,827 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 1012 transitions. [2020-07-21 23:03:03,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:03:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1012 transitions. [2020-07-21 23:03:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-21 23:03:03,838 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:03,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:04,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:04,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:04,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:04,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1466730177, now seen corresponding path program 1 times [2020-07-21 23:03:04,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:04,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420781149] [2020-07-21 23:03:04,044 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 23:03:04,138 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:03:04,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:04,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 23:03:04,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:04,219 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 4, 1] term [2020-07-21 23:03:04,220 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:03:04,222 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:03:04,223 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:03:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:03:04,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:04,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420781149] [2020-07-21 23:03:04,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:04,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 23:03:04,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081964647] [2020-07-21 23:03:04,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:03:04,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:04,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:03:04,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:03:04,326 INFO L87 Difference]: Start difference. First operand 744 states and 1012 transitions. Second operand 6 states. [2020-07-21 23:03:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:06,211 INFO L93 Difference]: Finished difference Result 1936 states and 2596 transitions. [2020-07-21 23:03:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 23:03:06,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-07-21 23:03:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:06,221 INFO L225 Difference]: With dead ends: 1936 [2020-07-21 23:03:06,221 INFO L226 Difference]: Without dead ends: 1198 [2020-07-21 23:03:06,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:03:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2020-07-21 23:03:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1122. [2020-07-21 23:03:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-07-21 23:03:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1465 transitions. [2020-07-21 23:03:06,278 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1465 transitions. Word has length 123 [2020-07-21 23:03:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:06,279 INFO L479 AbstractCegarLoop]: Abstraction has 1122 states and 1465 transitions. [2020-07-21 23:03:06,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:03:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1465 transitions. [2020-07-21 23:03:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-21 23:03:06,284 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:06,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:06,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:06,499 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:06,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1698102394, now seen corresponding path program 1 times [2020-07-21 23:03:06,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:06,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710439278] [2020-07-21 23:03:06,502 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 23:03:06,613 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:06,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:06,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:03:06,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:03:06,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:06,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710439278] [2020-07-21 23:03:06,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:06,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:03:06,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099886077] [2020-07-21 23:03:06,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:03:06,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:06,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:03:06,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:06,680 INFO L87 Difference]: Start difference. First operand 1122 states and 1465 transitions. Second operand 3 states. [2020-07-21 23:03:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:07,757 INFO L93 Difference]: Finished difference Result 2606 states and 3478 transitions. [2020-07-21 23:03:07,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:03:07,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-07-21 23:03:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:07,773 INFO L225 Difference]: With dead ends: 2606 [2020-07-21 23:03:07,774 INFO L226 Difference]: Without dead ends: 1490 [2020-07-21 23:03:07,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 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 23:03:07,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2020-07-21 23:03:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1490. [2020-07-21 23:03:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-07-21 23:03:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1914 transitions. [2020-07-21 23:03:07,847 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1914 transitions. Word has length 150 [2020-07-21 23:03:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:07,849 INFO L479 AbstractCegarLoop]: Abstraction has 1490 states and 1914 transitions. [2020-07-21 23:03:07,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:03:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1914 transitions. [2020-07-21 23:03:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-07-21 23:03:07,859 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:07,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:08,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:08,073 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1787764330, now seen corresponding path program 1 times [2020-07-21 23:03:08,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:08,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952461918] [2020-07-21 23:03:08,076 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 23:03:08,174 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:08,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:08,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:03:08,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:03:08,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:08,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952461918] [2020-07-21 23:03:08,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:08,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:03:08,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044563819] [2020-07-21 23:03:08,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:03:08,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:08,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:03:08,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:03:08,257 INFO L87 Difference]: Start difference. First operand 1490 states and 1914 transitions. Second operand 5 states. [2020-07-21 23:03:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:09,773 INFO L93 Difference]: Finished difference Result 3564 states and 4847 transitions. [2020-07-21 23:03:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:03:09,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-07-21 23:03:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:09,790 INFO L225 Difference]: With dead ends: 3564 [2020-07-21 23:03:09,790 INFO L226 Difference]: Without dead ends: 2080 [2020-07-21 23:03:09,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:03:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2020-07-21 23:03:09,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2048. [2020-07-21 23:03:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2020-07-21 23:03:09,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2606 transitions. [2020-07-21 23:03:09,888 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2606 transitions. Word has length 180 [2020-07-21 23:03:09,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:09,893 INFO L479 AbstractCegarLoop]: Abstraction has 2048 states and 2606 transitions. [2020-07-21 23:03:09,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:03:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2606 transitions. [2020-07-21 23:03:09,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-07-21 23:03:09,899 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:09,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:10,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:10,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:10,115 INFO L82 PathProgramCache]: Analyzing trace with hash 773376748, now seen corresponding path program 1 times [2020-07-21 23:03:10,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:10,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788266206] [2020-07-21 23:03:10,116 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 23:03:10,244 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:03:10,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:10,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 23:03:10,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:10,290 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 23:03:10,290 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:03:10,295 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:03:10,317 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:03:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-21 23:03:10,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:10,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788266206] [2020-07-21 23:03:10,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:10,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:03:10,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387850672] [2020-07-21 23:03:10,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:03:10,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:10,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:03:10,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:03:10,533 INFO L87 Difference]: Start difference. First operand 2048 states and 2606 transitions. Second operand 5 states. [2020-07-21 23:03:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:11,877 INFO L93 Difference]: Finished difference Result 4484 states and 5648 transitions. [2020-07-21 23:03:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 23:03:11,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-07-21 23:03:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:11,894 INFO L225 Difference]: With dead ends: 4484 [2020-07-21 23:03:11,894 INFO L226 Difference]: Without dead ends: 2442 [2020-07-21 23:03:11,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 23:03:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-07-21 23:03:11,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2428. [2020-07-21 23:03:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2428 states. [2020-07-21 23:03:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 2999 transitions. [2020-07-21 23:03:11,972 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 2999 transitions. Word has length 285 [2020-07-21 23:03:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:11,973 INFO L479 AbstractCegarLoop]: Abstraction has 2428 states and 2999 transitions. [2020-07-21 23:03:11,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:03:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 2999 transitions. [2020-07-21 23:03:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-07-21 23:03:11,981 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:11,981 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:12,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:12,196 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:12,197 INFO L82 PathProgramCache]: Analyzing trace with hash 228286821, now seen corresponding path program 1 times [2020-07-21 23:03:12,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:12,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981374181] [2020-07-21 23:03:12,198 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 23:03:12,365 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:03:12,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:12,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 23:03:12,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:12,432 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-21 23:03:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 292 proven. 53 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-21 23:03:12,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:03:12,863 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 23:03:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 107 proven. 268 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 23:03:13,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981374181] [2020-07-21 23:03:13,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:03:13,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-07-21 23:03:13,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477982647] [2020-07-21 23:03:13,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 23:03:13,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:13,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 23:03:13,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-07-21 23:03:13,539 INFO L87 Difference]: Start difference. First operand 2428 states and 2999 transitions. Second operand 14 states. [2020-07-21 23:03:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:17,867 INFO L93 Difference]: Finished difference Result 5457 states and 7137 transitions. [2020-07-21 23:03:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 23:03:17,868 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 369 [2020-07-21 23:03:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:17,885 INFO L225 Difference]: With dead ends: 5457 [2020-07-21 23:03:17,886 INFO L226 Difference]: Without dead ends: 3055 [2020-07-21 23:03:17,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2020-07-21 23:03:17,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2020-07-21 23:03:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2806. [2020-07-21 23:03:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2806 states. [2020-07-21 23:03:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3140 transitions. [2020-07-21 23:03:18,012 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3140 transitions. Word has length 369 [2020-07-21 23:03:18,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:18,012 INFO L479 AbstractCegarLoop]: Abstraction has 2806 states and 3140 transitions. [2020-07-21 23:03:18,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 23:03:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3140 transitions. [2020-07-21 23:03:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-07-21 23:03:18,019 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:18,020 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:18,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:18,236 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash -688897175, now seen corresponding path program 1 times [2020-07-21 23:03:18,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:18,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518897373] [2020-07-21 23:03:18,237 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 23:03:18,656 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:18,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:18,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:03:18,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-07-21 23:03:18,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:18,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518897373] [2020-07-21 23:03:18,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:18,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:03:18,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126535417] [2020-07-21 23:03:18,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:03:18,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:18,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:03:18,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:18,767 INFO L87 Difference]: Start difference. First operand 2806 states and 3140 transitions. Second operand 3 states. [2020-07-21 23:03:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:19,543 INFO L93 Difference]: Finished difference Result 5794 states and 6602 transitions. [2020-07-21 23:03:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:03:19,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 371 [2020-07-21 23:03:19,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:19,559 INFO L225 Difference]: With dead ends: 5794 [2020-07-21 23:03:19,559 INFO L226 Difference]: Without dead ends: 3176 [2020-07-21 23:03:19,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 369 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 23:03:19,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2020-07-21 23:03:19,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2812. [2020-07-21 23:03:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2020-07-21 23:03:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 3230 transitions. [2020-07-21 23:03:19,632 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 3230 transitions. Word has length 371 [2020-07-21 23:03:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:19,632 INFO L479 AbstractCegarLoop]: Abstraction has 2812 states and 3230 transitions. [2020-07-21 23:03:19,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:03:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 3230 transitions. [2020-07-21 23:03:19,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-07-21 23:03:19,644 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:19,645 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:19,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:19,859 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:19,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:19,860 INFO L82 PathProgramCache]: Analyzing trace with hash -289920288, now seen corresponding path program 1 times [2020-07-21 23:03:19,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:19,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900730030] [2020-07-21 23:03:19,862 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 23:03:20,089 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:03:20,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:20,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 23:03:20,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 546 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-07-21 23:03:20,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:03:20,444 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2020-07-21 23:03:20,496 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 23:03:20,497 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:20,499 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:20,500 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:20,501 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[6, 2, 1] term [2020-07-21 23:03:20,501 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:03:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 360 proven. 76 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-07-21 23:03:21,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900730030] [2020-07-21 23:03:21,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:03:21,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 23:03:21,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377674403] [2020-07-21 23:03:21,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 23:03:21,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:21,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 23:03:21,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:03:21,112 INFO L87 Difference]: Start difference. First operand 2812 states and 3230 transitions. Second operand 7 states. [2020-07-21 23:03:22,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:22,732 INFO L93 Difference]: Finished difference Result 6174 states and 7122 transitions. [2020-07-21 23:03:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 23:03:22,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 447 [2020-07-21 23:03:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:22,751 INFO L225 Difference]: With dead ends: 6174 [2020-07-21 23:03:22,752 INFO L226 Difference]: Without dead ends: 3552 [2020-07-21 23:03:22,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 892 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-07-21 23:03:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2020-07-21 23:03:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3184. [2020-07-21 23:03:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-07-21 23:03:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 3564 transitions. [2020-07-21 23:03:22,882 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 3564 transitions. Word has length 447 [2020-07-21 23:03:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:22,883 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 3564 transitions. [2020-07-21 23:03:22,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 23:03:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 3564 transitions. [2020-07-21 23:03:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-07-21 23:03:22,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:22,889 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:23,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:23,102 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:23,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:23,102 INFO L82 PathProgramCache]: Analyzing trace with hash -114142867, now seen corresponding path program 1 times [2020-07-21 23:03:23,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:23,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539893458] [2020-07-21 23:03:23,103 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 23:03:23,365 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:23,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:23,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:03:23,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-07-21 23:03:23,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:03:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-07-21 23:03:23,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539893458] [2020-07-21 23:03:23,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:03:23,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 23:03:23,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870542352] [2020-07-21 23:03:23,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:03:23,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:23,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:03:23,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:03:23,748 INFO L87 Difference]: Start difference. First operand 3184 states and 3564 transitions. Second operand 6 states. [2020-07-21 23:03:24,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:24,929 INFO L93 Difference]: Finished difference Result 7298 states and 8276 transitions. [2020-07-21 23:03:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 23:03:24,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 452 [2020-07-21 23:03:24,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:24,948 INFO L225 Difference]: With dead ends: 7298 [2020-07-21 23:03:24,949 INFO L226 Difference]: Without dead ends: 4304 [2020-07-21 23:03:24,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 900 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 23:03:24,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4304 states. [2020-07-21 23:03:25,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4304 to 4296. [2020-07-21 23:03:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2020-07-21 23:03:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 4803 transitions. [2020-07-21 23:03:25,058 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 4803 transitions. Word has length 452 [2020-07-21 23:03:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:25,060 INFO L479 AbstractCegarLoop]: Abstraction has 4296 states and 4803 transitions. [2020-07-21 23:03:25,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:03:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 4803 transitions. [2020-07-21 23:03:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-07-21 23:03:25,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:25,069 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:25,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:25,276 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:25,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:25,277 INFO L82 PathProgramCache]: Analyzing trace with hash 905212038, now seen corresponding path program 1 times [2020-07-21 23:03:25,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:25,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174105835] [2020-07-21 23:03:25,278 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 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 23:03:25,648 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:25,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:25,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:03:25,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-07-21 23:03:25,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:25,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174105835] [2020-07-21 23:03:25,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:25,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:03:25,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153401672] [2020-07-21 23:03:25,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:03:25,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:25,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:03:25,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:25,874 INFO L87 Difference]: Start difference. First operand 4296 states and 4803 transitions. Second operand 3 states. [2020-07-21 23:03:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:26,716 INFO L93 Difference]: Finished difference Result 9504 states and 10704 transitions. [2020-07-21 23:03:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:03:26,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 535 [2020-07-21 23:03:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:26,738 INFO L225 Difference]: With dead ends: 9504 [2020-07-21 23:03:26,738 INFO L226 Difference]: Without dead ends: 5398 [2020-07-21 23:03:26,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 533 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 23:03:26,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2020-07-21 23:03:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 5398. [2020-07-21 23:03:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5398 states. [2020-07-21 23:03:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 5985 transitions. [2020-07-21 23:03:26,852 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 5985 transitions. Word has length 535 [2020-07-21 23:03:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:26,854 INFO L479 AbstractCegarLoop]: Abstraction has 5398 states and 5985 transitions. [2020-07-21 23:03:26,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:03:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 5985 transitions. [2020-07-21 23:03:26,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-07-21 23:03:26,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:26,864 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:27,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:27,079 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:27,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1515945676, now seen corresponding path program 1 times [2020-07-21 23:03:27,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:27,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177620156] [2020-07-21 23:03:27,080 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 23:03:27,442 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:03:27,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:27,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 23:03:27,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:27,742 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2020-07-21 23:03:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 743 proven. 220 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 23:03:28,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:03:28,227 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,229 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,230 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,232 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,233 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,234 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,236 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,239 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,240 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,242 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,244 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,245 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,246 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,248 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,250 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,253 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,255 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,259 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,260 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,265 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,267 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,273 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,276 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,277 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,285 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,286 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,287 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,292 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,298 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,300 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,302 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,305 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,316 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,317 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,320 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,320 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,322 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,327 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,328 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,330 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,335 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,338 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,341 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,343 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,346 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,347 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,349 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,352 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,354 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,355 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,356 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,358 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,359 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,360 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,362 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,371 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,373 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,373 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,376 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,377 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,378 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,379 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,403 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,404 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,405 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,409 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,413 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,416 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,418 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,419 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,426 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,427 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,428 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,429 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,431 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,433 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,433 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,434 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,437 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,438 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,439 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,440 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,441 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,442 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,443 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,445 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,448 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,449 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,450 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 401 proven. 213 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2020-07-21 23:03:28,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177620156] [2020-07-21 23:03:28,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:03:28,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-07-21 23:03:28,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616576754] [2020-07-21 23:03:28,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 23:03:28,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:28,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 23:03:28,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-07-21 23:03:28,760 INFO L87 Difference]: Start difference. First operand 5398 states and 5985 transitions. Second operand 11 states. [2020-07-21 23:03:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:31,525 INFO L93 Difference]: Finished difference Result 12442 states and 13866 transitions. [2020-07-21 23:03:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 23:03:31,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 586 [2020-07-21 23:03:31,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:31,557 INFO L225 Difference]: With dead ends: 12442 [2020-07-21 23:03:31,557 INFO L226 Difference]: Without dead ends: 7234 [2020-07-21 23:03:31,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1164 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-07-21 23:03:31,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7234 states. [2020-07-21 23:03:31,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7234 to 6870. [2020-07-21 23:03:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6870 states. [2020-07-21 23:03:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 7623 transitions. [2020-07-21 23:03:31,802 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 7623 transitions. Word has length 586 [2020-07-21 23:03:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:31,803 INFO L479 AbstractCegarLoop]: Abstraction has 6870 states and 7623 transitions. [2020-07-21 23:03:31,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 23:03:31,803 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 7623 transitions. [2020-07-21 23:03:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2020-07-21 23:03:31,818 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:31,818 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:03:32,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:32,032 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:32,033 INFO L82 PathProgramCache]: Analyzing trace with hash -375667145, now seen corresponding path program 1 times [2020-07-21 23:03:32,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:32,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636338432] [2020-07-21 23:03:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:03:32,345 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:32,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:32,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 23:03:32,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:32,407 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:03:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 1084 proven. 2 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2020-07-21 23:03:32,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:03:32,778 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 23:03:32,779 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:32,780 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 23:03:32,781 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:32,781 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 23:03:32,782 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:32,925 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:03:32,932 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:03:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 633 proven. 105 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2020-07-21 23:03:33,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636338432] [2020-07-21 23:03:33,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:03:33,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 23:03:33,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011816767] [2020-07-21 23:03:33,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 23:03:33,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:33,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 23:03:33,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:03:33,338 INFO L87 Difference]: Start difference. First operand 6870 states and 7623 transitions. Second operand 7 states. [2020-07-21 23:03:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:36,163 INFO L93 Difference]: Finished difference Result 13548 states and 15075 transitions. [2020-07-21 23:03:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 23:03:36,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 674 [2020-07-21 23:03:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:36,191 INFO L225 Difference]: With dead ends: 13548 [2020-07-21 23:03:36,191 INFO L226 Difference]: Without dead ends: 7234 [2020-07-21 23:03:36,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1357 GetRequests, 1347 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:03:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7234 states. [2020-07-21 23:03:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7234 to 7234. [2020-07-21 23:03:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7234 states. [2020-07-21 23:03:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 7846 transitions. [2020-07-21 23:03:36,388 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 7846 transitions. Word has length 674 [2020-07-21 23:03:36,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:36,389 INFO L479 AbstractCegarLoop]: Abstraction has 7234 states and 7846 transitions. [2020-07-21 23:03:36,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 23:03:36,390 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 7846 transitions. [2020-07-21 23:03:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-07-21 23:03:36,412 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:36,413 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 23:03:36,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:36,629 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:36,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1356072521, now seen corresponding path program 1 times [2020-07-21 23:03:36,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:36,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368687403] [2020-07-21 23:03:36,631 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:36,928 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:03:36,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:36,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:03:36,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 1046 proven. 2 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2020-07-21 23:03:37,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:03:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 525 proven. 76 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2020-07-21 23:03:37,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368687403] [2020-07-21 23:03:37,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:03:37,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 23:03:37,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586038886] [2020-07-21 23:03:37,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:03:37,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:37,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:03:37,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:03:37,791 INFO L87 Difference]: Start difference. First operand 7234 states and 7846 transitions. Second operand 6 states. [2020-07-21 23:03:39,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:39,300 INFO L93 Difference]: Finished difference Result 13906 states and 15129 transitions. [2020-07-21 23:03:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 23:03:39,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 790 [2020-07-21 23:03:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:39,335 INFO L225 Difference]: With dead ends: 13906 [2020-07-21 23:03:39,335 INFO L226 Difference]: Without dead ends: 7228 [2020-07-21 23:03:39,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1585 GetRequests, 1576 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 23:03:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7228 states. [2020-07-21 23:03:39,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7228 to 7044. [2020-07-21 23:03:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7044 states. [2020-07-21 23:03:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7044 states to 7044 states and 7566 transitions. [2020-07-21 23:03:39,501 INFO L78 Accepts]: Start accepts. Automaton has 7044 states and 7566 transitions. Word has length 790 [2020-07-21 23:03:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:39,502 INFO L479 AbstractCegarLoop]: Abstraction has 7044 states and 7566 transitions. [2020-07-21 23:03:39,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:03:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7044 states and 7566 transitions. [2020-07-21 23:03:39,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2020-07-21 23:03:39,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:39,518 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 23:03:39,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:39,724 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:39,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:39,725 INFO L82 PathProgramCache]: Analyzing trace with hash 817798151, now seen corresponding path program 1 times [2020-07-21 23:03:39,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:39,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272379211] [2020-07-21 23:03:39,726 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:40,141 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:40,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:40,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:03:40,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2269 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2020-07-21 23:03:40,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:40,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272379211] [2020-07-21 23:03:40,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:40,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:03:40,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358534787] [2020-07-21 23:03:40,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:03:40,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:40,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:03:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:40,650 INFO L87 Difference]: Start difference. First operand 7044 states and 7566 transitions. Second operand 3 states. [2020-07-21 23:03:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:41,503 INFO L93 Difference]: Finished difference Result 13532 states and 14578 transitions. [2020-07-21 23:03:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:03:41,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 889 [2020-07-21 23:03:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:41,529 INFO L225 Difference]: With dead ends: 13532 [2020-07-21 23:03:41,529 INFO L226 Difference]: Without dead ends: 7044 [2020-07-21 23:03:41,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 887 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 23:03:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7044 states. [2020-07-21 23:03:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7044 to 7044. [2020-07-21 23:03:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7044 states. [2020-07-21 23:03:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7044 states to 7044 states and 7504 transitions. [2020-07-21 23:03:41,804 INFO L78 Accepts]: Start accepts. Automaton has 7044 states and 7504 transitions. Word has length 889 [2020-07-21 23:03:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:41,805 INFO L479 AbstractCegarLoop]: Abstraction has 7044 states and 7504 transitions. [2020-07-21 23:03:41,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:03:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 7044 states and 7504 transitions. [2020-07-21 23:03:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2020-07-21 23:03:41,822 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:41,822 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 23:03:42,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:42,028 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:42,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1901981288, now seen corresponding path program 1 times [2020-07-21 23:03:42,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:42,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891973979] [2020-07-21 23:03:42,030 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:42,348 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:03:42,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:42,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 23:03:42,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:42,436 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-21 23:03:42,437 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:03:42,438 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:03:42,475 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:03:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 2070 proven. 10 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-07-21 23:03:43,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:03:43,233 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:03:43,234 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:43,235 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:03:43,236 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:03:43,277 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:03:43,278 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:43,279 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:03:43,280 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:03:43,280 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:03:43,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:43,407 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:43,450 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:43,451 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:03:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 937 proven. 585 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2020-07-21 23:03:45,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891973979] [2020-07-21 23:03:45,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:03:45,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-21 23:03:45,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942348060] [2020-07-21 23:03:45,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 23:03:45,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:45,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 23:03:45,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-07-21 23:03:45,020 INFO L87 Difference]: Start difference. First operand 7044 states and 7504 transitions. Second operand 13 states. [2020-07-21 23:03:47,096 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-07-21 23:03:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:48,628 INFO L93 Difference]: Finished difference Result 13920 states and 14876 transitions. [2020-07-21 23:03:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-21 23:03:48,629 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 914 [2020-07-21 23:03:48,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:48,651 INFO L225 Difference]: With dead ends: 13920 [2020-07-21 23:03:48,652 INFO L226 Difference]: Without dead ends: 7432 [2020-07-21 23:03:48,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1863 GetRequests, 1833 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2020-07-21 23:03:48,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2020-07-21 23:03:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 6868. [2020-07-21 23:03:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6868 states. [2020-07-21 23:03:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6868 states to 6868 states and 7299 transitions. [2020-07-21 23:03:48,806 INFO L78 Accepts]: Start accepts. Automaton has 6868 states and 7299 transitions. Word has length 914 [2020-07-21 23:03:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:48,808 INFO L479 AbstractCegarLoop]: Abstraction has 6868 states and 7299 transitions. [2020-07-21 23:03:48,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 23:03:48,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6868 states and 7299 transitions. [2020-07-21 23:03:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2020-07-21 23:03:48,829 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:48,830 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 23:03:49,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:49,043 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:49,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:49,043 INFO L82 PathProgramCache]: Analyzing trace with hash 65843647, now seen corresponding path program 1 times [2020-07-21 23:03:49,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:49,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269566644] [2020-07-21 23:03:49,044 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:49,694 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:49,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:49,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:03:49,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 2326 trivial. 0 not checked. [2020-07-21 23:03:50,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:50,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269566644] [2020-07-21 23:03:50,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:50,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:03:50,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979023548] [2020-07-21 23:03:50,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:03:50,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:03:50,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:50,446 INFO L87 Difference]: Start difference. First operand 6868 states and 7299 transitions. Second operand 3 states. [2020-07-21 23:03:51,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:51,279 INFO L93 Difference]: Finished difference Result 8324 states and 8830 transitions. [2020-07-21 23:03:51,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:03:51,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 925 [2020-07-21 23:03:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:51,281 INFO L225 Difference]: With dead ends: 8324 [2020-07-21 23:03:51,281 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:03:51,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 923 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 23:03:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:03:51,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:03:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:03:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:03:51,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 925 [2020-07-21 23:03:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:51,297 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:03:51,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:03:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:03:51,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:03:51,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:51,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:03:52,815 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 229 [2020-07-21 23:03:53,192 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 229 [2020-07-21 23:03:55,169 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 273 DAG size of output: 82 [2020-07-21 23:03:56,505 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 235 DAG size of output: 66 [2020-07-21 23:03:57,828 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 235 DAG size of output: 66 [2020-07-21 23:03:57,833 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:03:57,834 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~a12~0 |old(~a12~0)|) (= ~a24~0 |old(~a24~0)|) (= ~a21~0 |old(~a21~0)|) (= ~a15~0 |old(~a15~0)|)) [2020-07-21 23:03:57,834 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:03:57,834 INFO L268 CegarLoopResult]: For program point L432(lines 432 870) no Hoare annotation was computed. [2020-07-21 23:03:57,834 INFO L268 CegarLoopResult]: For program point L366(lines 366 870) no Hoare annotation was computed. [2020-07-21 23:03:57,834 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,835 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,835 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,835 INFO L268 CegarLoopResult]: For program point L235(lines 235 870) no Hoare annotation was computed. [2020-07-21 23:03:57,835 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 23:03:57,835 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 23:03:57,835 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 23:03:57,835 INFO L268 CegarLoopResult]: For program point L764(lines 764 870) no Hoare annotation was computed. [2020-07-21 23:03:57,836 INFO L268 CegarLoopResult]: For program point L632(lines 632 870) no Hoare annotation was computed. [2020-07-21 23:03:57,836 INFO L268 CegarLoopResult]: For program point L500(lines 500 870) no Hoare annotation was computed. [2020-07-21 23:03:57,836 INFO L268 CegarLoopResult]: For program point L831(lines 831 870) no Hoare annotation was computed. [2020-07-21 23:03:57,836 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,836 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,836 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,836 INFO L268 CegarLoopResult]: For program point L700(lines 700 870) no Hoare annotation was computed. [2020-07-21 23:03:57,836 INFO L268 CegarLoopResult]: For program point L568(lines 568 870) no Hoare annotation was computed. [2020-07-21 23:03:57,837 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 23:03:57,837 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 23:03:57,837 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 23:03:57,837 INFO L268 CegarLoopResult]: For program point L305(lines 305 870) no Hoare annotation was computed. [2020-07-21 23:03:57,837 INFO L268 CegarLoopResult]: For program point L438(lines 438 870) no Hoare annotation was computed. [2020-07-21 23:03:57,837 INFO L268 CegarLoopResult]: For program point L372(lines 372 870) no Hoare annotation was computed. [2020-07-21 23:03:57,837 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,838 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,838 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,838 INFO L268 CegarLoopResult]: For program point L241(lines 241 870) no Hoare annotation was computed. [2020-07-21 23:03:57,838 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 23:03:57,838 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 23:03:57,838 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 23:03:57,838 INFO L268 CegarLoopResult]: For program point L638(lines 638 870) no Hoare annotation was computed. [2020-07-21 23:03:57,838 INFO L268 CegarLoopResult]: For program point L506(lines 506 870) no Hoare annotation was computed. [2020-07-21 23:03:57,839 INFO L268 CegarLoopResult]: For program point L837(lines 837 870) no Hoare annotation was computed. [2020-07-21 23:03:57,839 INFO L268 CegarLoopResult]: For program point L771(lines 771 870) no Hoare annotation was computed. [2020-07-21 23:03:57,839 INFO L268 CegarLoopResult]: For program point L573(lines 573 870) no Hoare annotation was computed. [2020-07-21 23:03:57,839 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,839 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,839 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,839 INFO L268 CegarLoopResult]: For program point L706(lines 706 870) no Hoare annotation was computed. [2020-07-21 23:03:57,840 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 23:03:57,840 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 23:03:57,840 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 23:03:57,840 INFO L268 CegarLoopResult]: For program point L311(lines 311 870) no Hoare annotation was computed. [2020-07-21 23:03:57,840 INFO L268 CegarLoopResult]: For program point L444(lines 444 870) no Hoare annotation was computed. [2020-07-21 23:03:57,840 INFO L268 CegarLoopResult]: For program point L378(lines 378 870) no Hoare annotation was computed. [2020-07-21 23:03:57,840 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,841 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,841 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,841 INFO L268 CegarLoopResult]: For program point L247(lines 247 870) no Hoare annotation was computed. [2020-07-21 23:03:57,841 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 23:03:57,841 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 23:03:57,841 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 23:03:57,841 INFO L268 CegarLoopResult]: For program point L842(lines 842 870) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point L644(lines 644 870) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point L512(lines 512 870) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point L777(lines 777 870) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point L579(lines 579 870) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point L712(lines 712 870) no Hoare annotation was computed. [2020-07-21 23:03:57,842 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 23:03:57,843 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 23:03:57,843 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 23:03:57,843 INFO L268 CegarLoopResult]: For program point L449(lines 449 870) no Hoare annotation was computed. [2020-07-21 23:03:57,843 INFO L268 CegarLoopResult]: For program point L317(lines 317 870) no Hoare annotation was computed. [2020-07-21 23:03:57,843 INFO L268 CegarLoopResult]: For program point L384(lines 384 870) no Hoare annotation was computed. [2020-07-21 23:03:57,843 INFO L268 CegarLoopResult]: For program point L252(lines 252 870) no Hoare annotation was computed. [2020-07-21 23:03:57,844 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,844 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,844 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,844 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 23:03:57,844 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 23:03:57,844 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 23:03:57,845 INFO L268 CegarLoopResult]: For program point L848(lines 848 870) no Hoare annotation was computed. [2020-07-21 23:03:57,845 INFO L268 CegarLoopResult]: For program point L650(lines 650 870) no Hoare annotation was computed. [2020-07-21 23:03:57,845 INFO L268 CegarLoopResult]: For program point L518(lines 518 870) no Hoare annotation was computed. [2020-07-21 23:03:57,845 INFO L268 CegarLoopResult]: For program point L783(lines 783 870) no Hoare annotation was computed. [2020-07-21 23:03:57,845 INFO L268 CegarLoopResult]: For program point L585(lines 585 870) no Hoare annotation was computed. [2020-07-21 23:03:57,845 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,845 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,846 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,846 INFO L268 CegarLoopResult]: For program point L718(lines 718 870) no Hoare annotation was computed. [2020-07-21 23:03:57,846 INFO L268 CegarLoopResult]: For program point L454(lines 454 870) no Hoare annotation was computed. [2020-07-21 23:03:57,846 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 23:03:57,846 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 23:03:57,846 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 23:03:57,846 INFO L268 CegarLoopResult]: For program point L323(lines 323 870) no Hoare annotation was computed. [2020-07-21 23:03:57,847 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 872) the Hoare annotation is: (let ((.cse8 (= ~a12~0 |old(~a12~0)|)) (.cse9 (= ~a24~0 |old(~a24~0)|)) (.cse10 (= ~a15~0 |old(~a15~0)|))) (let ((.cse4 (not (<= 10 |old(~a21~0)|))) (.cse5 (not (<= 23 |old(~a12~0)|))) (.cse0 (and .cse8 (<= ~a21~0 |old(~a21~0)|) .cse9 .cse10 (<= |old(~a21~0)| ~a21~0))) (.cse2 (not (<= 9 |old(~a21~0)|))) (.cse3 (not (<= 7 |old(~a15~0)|))) (.cse7 (and .cse8 .cse9 (= ~a21~0 |old(~a21~0)|) .cse10)) (.cse1 (not (<= |old(~a15~0)| 8))) (.cse6 (not (<= |old(~a21~0)| 7)))) (and (or (not (<= 0 |old(~a12~0)|)) .cse0 .cse1 (not (<= |old(~a12~0)| 80))) (or .cse0 (and (or (not (= 1 |old(~a24~0)|)) (not (<= (+ |old(~a12~0)| 49) 0)) .cse1 .cse2) (or (= 10 |old(~a21~0)|) .cse1 .cse2))) (or (= 6 |old(~a21~0)|) .cse0 .cse3 (not (<= |old(~a21~0)| 8))) (or .cse4 (not (<= |old(~a12~0)| 11)) .cse0 (not (< 0 (+ |old(~a12~0)| 43)))) (or .cse5 .cse0 .cse6) (or .cse4 (not (< (+ |old(~a12~0)| 42) 0)) .cse0 (not (<= 9 |old(~a15~0)|))) (or .cse5 .cse0 .cse2) (or .cse7 .cse3 .cse1) (or .cse7 .cse1 .cse6)))) [2020-07-21 23:03:57,847 INFO L268 CegarLoopResult]: For program point L390(lines 390 870) no Hoare annotation was computed. [2020-07-21 23:03:57,848 INFO L268 CegarLoopResult]: For program point L258(lines 258 870) no Hoare annotation was computed. [2020-07-21 23:03:57,848 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,848 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,848 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,848 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 23:03:57,848 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 23:03:57,848 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 23:03:57,849 INFO L268 CegarLoopResult]: For program point L854(lines 854 870) no Hoare annotation was computed. [2020-07-21 23:03:57,849 INFO L268 CegarLoopResult]: For program point L656(lines 656 870) no Hoare annotation was computed. [2020-07-21 23:03:57,849 INFO L268 CegarLoopResult]: For program point L524(lines 524 870) no Hoare annotation was computed. [2020-07-21 23:03:57,849 INFO L268 CegarLoopResult]: For program point L789(lines 789 870) no Hoare annotation was computed. [2020-07-21 23:03:57,849 INFO L268 CegarLoopResult]: For program point L591(lines 591 870) no Hoare annotation was computed. [2020-07-21 23:03:57,849 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,850 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,850 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,850 INFO L268 CegarLoopResult]: For program point L724(lines 724 870) no Hoare annotation was computed. [2020-07-21 23:03:57,850 INFO L268 CegarLoopResult]: For program point L460(lines 460 870) no Hoare annotation was computed. [2020-07-21 23:03:57,850 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 23:03:57,850 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 23:03:57,850 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 23:03:57,851 INFO L268 CegarLoopResult]: For program point L329(lines 329 870) no Hoare annotation was computed. [2020-07-21 23:03:57,851 INFO L268 CegarLoopResult]: For program point L396(lines 396 870) no Hoare annotation was computed. [2020-07-21 23:03:57,851 INFO L268 CegarLoopResult]: For program point L264(lines 264 870) no Hoare annotation was computed. [2020-07-21 23:03:57,851 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,851 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,851 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,851 INFO L268 CegarLoopResult]: For program point L859(lines 859 870) no Hoare annotation was computed. [2020-07-21 23:03:57,851 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 23:03:57,852 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 23:03:57,852 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 23:03:57,852 INFO L268 CegarLoopResult]: For program point L662(lines 662 870) no Hoare annotation was computed. [2020-07-21 23:03:57,852 INFO L268 CegarLoopResult]: For program point L530(lines 530 870) no Hoare annotation was computed. [2020-07-21 23:03:57,852 INFO L268 CegarLoopResult]: For program point L795(lines 795 870) no Hoare annotation was computed. [2020-07-21 23:03:57,852 INFO L268 CegarLoopResult]: For program point L597(lines 597 870) no Hoare annotation was computed. [2020-07-21 23:03:57,852 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,852 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,853 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,853 INFO L268 CegarLoopResult]: For program point L730(lines 730 870) no Hoare annotation was computed. [2020-07-21 23:03:57,853 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 23:03:57,853 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 23:03:57,853 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 23:03:57,853 INFO L268 CegarLoopResult]: For program point L467(lines 467 870) no Hoare annotation was computed. [2020-07-21 23:03:57,853 INFO L268 CegarLoopResult]: For program point L335(lines 335 870) no Hoare annotation was computed. [2020-07-21 23:03:57,854 INFO L268 CegarLoopResult]: For program point L269(lines 269 870) no Hoare annotation was computed. [2020-07-21 23:03:57,854 INFO L268 CegarLoopResult]: For program point L402(lines 402 870) no Hoare annotation was computed. [2020-07-21 23:03:57,854 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,854 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,854 INFO L268 CegarLoopResult]: For program point L865(lines 865 870) no Hoare annotation was computed. [2020-07-21 23:03:57,854 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 23:03:57,854 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 23:03:57,855 INFO L268 CegarLoopResult]: For program point L668(lines 668 870) no Hoare annotation was computed. [2020-07-21 23:03:57,855 INFO L268 CegarLoopResult]: For program point L536(lines 536 870) no Hoare annotation was computed. [2020-07-21 23:03:57,855 INFO L268 CegarLoopResult]: For program point L801(lines 801 870) no Hoare annotation was computed. [2020-07-21 23:03:57,855 INFO L268 CegarLoopResult]: For program point L735(lines 735 870) no Hoare annotation was computed. [2020-07-21 23:03:57,855 INFO L268 CegarLoopResult]: For program point L603(lines 603 870) no Hoare annotation was computed. [2020-07-21 23:03:57,855 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 106) no Hoare annotation was computed. [2020-07-21 23:03:57,856 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,856 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,856 INFO L268 CegarLoopResult]: For program point L472(lines 472 870) no Hoare annotation was computed. [2020-07-21 23:03:57,856 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 23:03:57,856 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 23:03:57,856 INFO L268 CegarLoopResult]: For program point L341(lines 341 870) no Hoare annotation was computed. [2020-07-21 23:03:57,856 INFO L268 CegarLoopResult]: For program point L275(lines 275 870) no Hoare annotation was computed. [2020-07-21 23:03:57,856 INFO L268 CegarLoopResult]: For program point L408(lines 408 870) no Hoare annotation was computed. [2020-07-21 23:03:57,857 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,857 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,857 INFO L268 CegarLoopResult]: For program point L541(lines 541 870) no Hoare annotation was computed. [2020-07-21 23:03:57,857 INFO L268 CegarLoopResult]: For program point L211(lines 211 870) no Hoare annotation was computed. [2020-07-21 23:03:57,857 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 23:03:57,857 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 23:03:57,857 INFO L268 CegarLoopResult]: For program point L674(lines 674 870) no Hoare annotation was computed. [2020-07-21 23:03:57,858 INFO L268 CegarLoopResult]: For program point L807(lines 807 870) no Hoare annotation was computed. [2020-07-21 23:03:57,858 INFO L268 CegarLoopResult]: For program point L741(lines 741 870) no Hoare annotation was computed. [2020-07-21 23:03:57,858 INFO L268 CegarLoopResult]: For program point L609(lines 609 870) no Hoare annotation was computed. [2020-07-21 23:03:57,858 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,858 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,858 INFO L268 CegarLoopResult]: For program point L478(lines 478 870) no Hoare annotation was computed. [2020-07-21 23:03:57,858 INFO L268 CegarLoopResult]: For program point L280(lines 280 870) no Hoare annotation was computed. [2020-07-21 23:03:57,858 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 23:03:57,859 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 23:03:57,859 INFO L268 CegarLoopResult]: For program point L677(lines 677 870) no Hoare annotation was computed. [2020-07-21 23:03:57,859 INFO L268 CegarLoopResult]: For program point L347(lines 347 870) no Hoare annotation was computed. [2020-07-21 23:03:57,859 INFO L268 CegarLoopResult]: For program point L414(lines 414 870) no Hoare annotation was computed. [2020-07-21 23:03:57,859 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,859 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,859 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,860 INFO L268 CegarLoopResult]: For program point L547(lines 547 870) no Hoare annotation was computed. [2020-07-21 23:03:57,860 INFO L268 CegarLoopResult]: For program point L217(lines 217 870) no Hoare annotation was computed. [2020-07-21 23:03:57,860 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 23:03:57,860 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 23:03:57,860 INFO L268 CegarLoopResult]: For program point L747(lines 747 870) no Hoare annotation was computed. [2020-07-21 23:03:57,860 INFO L268 CegarLoopResult]: For program point L615(lines 615 870) no Hoare annotation was computed. [2020-07-21 23:03:57,860 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,861 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,861 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 23:03:57,861 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,861 INFO L268 CegarLoopResult]: For program point L814(lines 814 870) no Hoare annotation was computed. [2020-07-21 23:03:57,861 INFO L268 CegarLoopResult]: For program point L484(lines 484 870) no Hoare annotation was computed. [2020-07-21 23:03:57,861 INFO L268 CegarLoopResult]: For program point L286(lines 286 870) no Hoare annotation was computed. [2020-07-21 23:03:57,861 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 23:03:57,862 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 23:03:57,862 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 23:03:57,862 INFO L268 CegarLoopResult]: For program point L683(lines 683 870) no Hoare annotation was computed. [2020-07-21 23:03:57,862 INFO L268 CegarLoopResult]: For program point L353(lines 353 870) no Hoare annotation was computed. [2020-07-21 23:03:57,862 INFO L268 CegarLoopResult]: For program point L552(lines 552 870) no Hoare annotation was computed. [2020-07-21 23:03:57,862 INFO L268 CegarLoopResult]: For program point L420(lines 420 870) no Hoare annotation was computed. [2020-07-21 23:03:57,862 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,862 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,863 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,863 INFO L268 CegarLoopResult]: For program point L223(lines 223 870) no Hoare annotation was computed. [2020-07-21 23:03:57,863 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 23:03:57,863 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 23:03:57,863 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 23:03:57,863 INFO L268 CegarLoopResult]: For program point L752(lines 752 870) no Hoare annotation was computed. [2020-07-21 23:03:57,863 INFO L268 CegarLoopResult]: For program point L819(lines 819 870) no Hoare annotation was computed. [2020-07-21 23:03:57,863 INFO L268 CegarLoopResult]: For program point L621(lines 621 870) no Hoare annotation was computed. [2020-07-21 23:03:57,864 INFO L268 CegarLoopResult]: For program point L555(lines 555 870) no Hoare annotation was computed. [2020-07-21 23:03:57,864 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,864 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,864 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,864 INFO L268 CegarLoopResult]: For program point L688(lines 688 870) no Hoare annotation was computed. [2020-07-21 23:03:57,864 INFO L268 CegarLoopResult]: For program point L490(lines 490 870) no Hoare annotation was computed. [2020-07-21 23:03:57,864 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 23:03:57,864 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 23:03:57,865 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 23:03:57,865 INFO L268 CegarLoopResult]: For program point L359(lines 359 870) no Hoare annotation was computed. [2020-07-21 23:03:57,865 INFO L268 CegarLoopResult]: For program point L293(lines 293 870) no Hoare annotation was computed. [2020-07-21 23:03:57,865 INFO L268 CegarLoopResult]: For program point L426(lines 426 870) no Hoare annotation was computed. [2020-07-21 23:03:57,865 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,865 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,865 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,866 INFO L268 CegarLoopResult]: For program point L229(lines 229 870) no Hoare annotation was computed. [2020-07-21 23:03:57,866 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 23:03:57,866 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 23:03:57,866 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 23:03:57,866 INFO L268 CegarLoopResult]: For program point L758(lines 758 870) no Hoare annotation was computed. [2020-07-21 23:03:57,866 INFO L268 CegarLoopResult]: For program point L626(lines 626 870) no Hoare annotation was computed. [2020-07-21 23:03:57,866 INFO L268 CegarLoopResult]: For program point L825(lines 825 870) no Hoare annotation was computed. [2020-07-21 23:03:57,867 INFO L268 CegarLoopResult]: For program point L561(lines 561 870) no Hoare annotation was computed. [2020-07-21 23:03:57,867 INFO L268 CegarLoopResult]: For program point L495(lines 495 870) no Hoare annotation was computed. [2020-07-21 23:03:57,867 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,867 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,867 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 872) no Hoare annotation was computed. [2020-07-21 23:03:57,867 INFO L268 CegarLoopResult]: For program point L694(lines 694 870) no Hoare annotation was computed. [2020-07-21 23:03:57,868 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 23:03:57,868 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 23:03:57,868 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 23:03:57,868 INFO L268 CegarLoopResult]: For program point L299(lines 299 870) no Hoare annotation was computed. [2020-07-21 23:03:57,868 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:03:57,868 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (+ ~a12~0 49) 0) (<= 7 ~a15~0) (<= ~a15~0 8) (= 1 ~a24~0) (<= 7 ~a21~0) (<= ~a21~0 7)) [2020-07-21 23:03:57,868 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:03:57,869 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:03:57,869 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 874 890) the Hoare annotation is: (or (not (= 1 |old(~a24~0)|)) (and (= (+ ~a12~0 49) 0) (<= ~a21~0 |old(~a21~0)|) (= 1 ~a24~0) (<= 7 ~a21~0) (= ~a15~0 |old(~a15~0)|)) (not (= 0 (+ |old(~a12~0)| 49))) (not (<= 7 |old(~a21~0)|)) (not (<= 7 |old(~a15~0)|)) (not (<= |old(~a15~0)| 8)) (not (<= |old(~a21~0)| 7))) [2020-07-21 23:03:57,869 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 874 890) no Hoare annotation was computed. [2020-07-21 23:03:57,869 INFO L264 CegarLoopResult]: At program point L888(line 888) the Hoare annotation is: (let ((.cse1 (<= 9 ~a21~0)) (.cse0 (<= 23 ~a12~0)) (.cse2 (<= ~a15~0 8)) (.cse4 (<= 9 ~a15~0)) (.cse3 (<= 10 ~a21~0))) (or (not (= 1 |old(~a24~0)|)) (and .cse0 .cse1) (and .cse2 (<= ~a21~0 7)) (not (<= 7 |old(~a15~0)|)) (not (<= |old(~a15~0)| 8)) (and (<= ~a12~0 80) .cse2 (<= 0 ~a12~0)) (and (<= ~a12~0 11) (< 0 (+ ~a12~0 43)) .cse3) (not (= 7 |old(~a21~0)|)) (and .cse4 (<= ~a21~0 8) (not (= 6 ~a21~0))) (and (<= (+ ~a12~0 49) 0) (= 1 ~a24~0) .cse2 .cse1) (and (not (= 10 ~a21~0)) .cse2 .cse1) (not (= 0 (+ |old(~a12~0)| 49))) (and .cse0 .cse4) (and (<= 7 ~a15~0) .cse2) (and (< (+ ~a12~0 42) 0) .cse4 .cse3))) [2020-07-21 23:03:57,870 INFO L268 CegarLoopResult]: For program point L888-1(line 888) no Hoare annotation was computed. [2020-07-21 23:03:57,870 INFO L268 CegarLoopResult]: For program point L885(line 885) no Hoare annotation was computed. [2020-07-21 23:03:57,870 INFO L264 CegarLoopResult]: At program point L880-2(lines 880 889) the Hoare annotation is: (let ((.cse1 (<= 9 ~a21~0)) (.cse0 (<= 23 ~a12~0)) (.cse2 (<= ~a15~0 8)) (.cse4 (<= 9 ~a15~0)) (.cse3 (<= 10 ~a21~0))) (or (not (= 1 |old(~a24~0)|)) (and .cse0 .cse1) (and .cse2 (<= ~a21~0 7)) (not (<= 7 |old(~a15~0)|)) (not (<= |old(~a15~0)| 8)) (and (<= ~a12~0 80) .cse2 (<= 0 ~a12~0)) (and (<= ~a12~0 11) (< 0 (+ ~a12~0 43)) .cse3) (not (= 7 |old(~a21~0)|)) (and .cse4 (<= ~a21~0 8) (not (= 6 ~a21~0))) (and (<= (+ ~a12~0 49) 0) (= 1 ~a24~0) .cse2 .cse1) (and (not (= 10 ~a21~0)) .cse2 .cse1) (not (= 0 (+ |old(~a12~0)| 49))) (and .cse0 .cse4) (and (<= 7 ~a15~0) .cse2) (and (< (+ ~a12~0 42) 0) .cse4 .cse3))) [2020-07-21 23:03:57,870 INFO L268 CegarLoopResult]: For program point L880-3(lines 874 890) no Hoare annotation was computed. [2020-07-21 23:03:57,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:03:57 BoogieIcfgContainer [2020-07-21 23:03:57,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:03:57,898 INFO L168 Benchmark]: Toolchain (without parser) took 61142.06 ms. Allocated memory was 145.8 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 101.5 MB in the beginning and 208.7 MB in the end (delta: -107.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-07-21 23:03:57,899 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 23:03:57,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1101.03 ms. Allocated memory was 145.8 MB in the beginning and 206.0 MB in the end (delta: 60.3 MB). Free memory was 101.3 MB in the beginning and 169.3 MB in the end (delta: -68.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:03:57,900 INFO L168 Benchmark]: Boogie Preprocessor took 168.78 ms. Allocated memory is still 206.0 MB. Free memory was 169.3 MB in the beginning and 163.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. [2020-07-21 23:03:57,901 INFO L168 Benchmark]: RCFGBuilder took 1745.15 ms. Allocated memory was 206.0 MB in the beginning and 239.6 MB in the end (delta: 33.6 MB). Free memory was 163.5 MB in the beginning and 159.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. [2020-07-21 23:03:57,901 INFO L168 Benchmark]: TraceAbstraction took 58119.07 ms. Allocated memory was 239.6 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 159.3 MB in the beginning and 208.7 MB in the end (delta: -49.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-07-21 23:03:57,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1101.03 ms. Allocated memory was 145.8 MB in the beginning and 206.0 MB in the end (delta: 60.3 MB). Free memory was 101.3 MB in the beginning and 169.3 MB in the end (delta: -68.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 168.78 ms. Allocated memory is still 206.0 MB. Free memory was 169.3 MB in the beginning and 163.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1745.15 ms. Allocated memory was 206.0 MB in the beginning and 239.6 MB in the end (delta: 33.6 MB). Free memory was 163.5 MB in the beginning and 159.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 58119.07 ms. Allocated memory was 239.6 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 159.3 MB in the beginning and 208.7 MB in the end (delta: -49.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 106]: 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: 880]: Loop Invariant Derived loop invariant: (((((((((((((!(1 == \old(a24)) || (23 <= a12 && 9 <= a21)) || (a15 <= 8 && a21 <= 7)) || !(7 <= \old(a15))) || !(\old(a15) <= 8)) || ((a12 <= 80 && a15 <= 8) && 0 <= a12)) || ((a12 <= 11 && 0 < a12 + 43) && 10 <= a21)) || !(7 == \old(a21))) || ((9 <= a15 && a21 <= 8) && !(6 == a21))) || (((a12 + 49 <= 0 && 1 == a24) && a15 <= 8) && 9 <= a21)) || ((!(10 == a21) && a15 <= 8) && 9 <= a21)) || !(0 == \old(a12) + 49)) || (23 <= a12 && 9 <= a15)) || (7 <= a15 && a15 <= 8)) || ((a12 + 42 < 0 && 9 <= a15) && 10 <= a21) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 254 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 51.6s, OverallIterations: 17, TraceHistogramMax: 8, AutomataDifference: 30.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1330 SDtfs, 10057 SDslu, 671 SDs, 0 SdLazy, 16600 SolverSat, 2906 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12200 GetRequests, 12046 SyntacticMatches, 9 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7234occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 17 MinimizatonAttempts, 2237 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 338 PreInvPairs, 446 NumberOfFragments, 587 HoareAnnotationTreeSize, 338 FomulaSimplifications, 23223 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18477 FormulaSimplificationTreeSizeReductionInter, 4.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 7849 NumberOfCodeBlocks, 6787 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 12057 ConstructedInterpolants, 0 QuantifiedInterpolants, 23113811 SizeOfPredicates, 37 NumberOfNonLiveVariables, 10508 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 22743/24359 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...