/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/Problem10_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:27:01,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:27:01,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:27:01,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:27:01,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:27:01,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:27:01,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:27:01,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:27:01,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:27:01,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:27:01,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:27:01,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:27:01,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:27:01,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:27:01,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:27:01,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:27:01,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:27:01,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:27:01,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:27:01,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:27:01,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:27:01,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:27:01,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:27:01,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:27:01,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:27:01,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:27:01,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:27:01,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:27:01,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:27:01,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:27:01,845 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:27:01,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:27:01,845 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:27:01,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:27:01,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:27:01,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:27:01,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:27:01,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:27:01,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:27:01,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:27:01,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:27:01,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:27:01,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:27:01,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:27:01,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:27:01,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:27:01,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:27:01,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:27:01,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:27:01,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:27:01,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:27:01,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:27:01,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:01,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:27:01,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:27:01,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:27:02,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:27:02,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:27:02,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:27:02,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:27:02,130 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:27:02,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-07-21 01:27:02,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb5787a8/bcea02914e514b088a9979ec090a42a2/FLAGf39a9c2a0 [2020-07-21 01:27:02,763 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:27:02,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-07-21 01:27:02,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb5787a8/bcea02914e514b088a9979ec090a42a2/FLAGf39a9c2a0 [2020-07-21 01:27:03,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb5787a8/bcea02914e514b088a9979ec090a42a2 [2020-07-21 01:27:03,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:27:03,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:27:03,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:03,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:27:03,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:27:03,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:03" (1/1) ... [2020-07-21 01:27:03,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1bca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03, skipping insertion in model container [2020-07-21 01:27:03,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:03" (1/1) ... [2020-07-21 01:27:03,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:27:03,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:27:03,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:03,628 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:27:03,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:03,759 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:27:03,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03 WrapperNode [2020-07-21 01:27:03,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:03,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:27:03,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:27:03,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:27:03,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03" (1/1) ... [2020-07-21 01:27:03,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03" (1/1) ... [2020-07-21 01:27:03,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03" (1/1) ... [2020-07-21 01:27:03,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03" (1/1) ... [2020-07-21 01:27:03,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03" (1/1) ... [2020-07-21 01:27:03,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03" (1/1) ... [2020-07-21 01:27:03,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03" (1/1) ... [2020-07-21 01:27:03,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:27:03,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:27:03,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:27:03,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:27:03,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:27:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:27:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:27:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:27:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:27:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:27:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:27:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:27:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:27:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:27:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:27:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:27:05,340 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:27:05,340 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:27:05,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:05 BoogieIcfgContainer [2020-07-21 01:27:05,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:27:05,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:27:05,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:27:05,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:27:05,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:27:03" (1/3) ... [2020-07-21 01:27:05,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a974fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:05, skipping insertion in model container [2020-07-21 01:27:05,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:03" (2/3) ... [2020-07-21 01:27:05,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a974fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:05, skipping insertion in model container [2020-07-21 01:27:05,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:05" (3/3) ... [2020-07-21 01:27:05,363 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label19.c [2020-07-21 01:27:05,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:27:05,385 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:27:05,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:27:05,433 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:27:05,433 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:27:05,433 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:27:05,434 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:27:05,434 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:27:05,434 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:27:05,434 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:27:05,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:27:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 01:27:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-21 01:27:05,463 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:05,464 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] [2020-07-21 01:27:05,465 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:05,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:05,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1418549242, now seen corresponding path program 1 times [2020-07-21 01:27:05,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:05,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305353075] [2020-07-21 01:27:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:05,586 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:05,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:05,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:05,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:05,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:05,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305353075] [2020-07-21 01:27:05,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:05,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:27:05,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106887440] [2020-07-21 01:27:05,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:27:05,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:05,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:27:05,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:27:05,692 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 01:27:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:06,763 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 01:27:06,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:27:06,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-07-21 01:27:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:06,781 INFO L225 Difference]: With dead ends: 586 [2020-07-21 01:27:06,782 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 01:27:06,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:27:06,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 01:27:06,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 01:27:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 01:27:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2020-07-21 01:27:06,869 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 35 [2020-07-21 01:27:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:06,870 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2020-07-21 01:27:06,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:27:06,870 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2020-07-21 01:27:06,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-07-21 01:27:06,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:06,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:07,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:07,092 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:07,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:07,093 INFO L82 PathProgramCache]: Analyzing trace with hash -945859230, now seen corresponding path program 1 times [2020-07-21 01:27:07,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:07,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134803803] [2020-07-21 01:27:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:07,187 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:07,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:07,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 01:27:07,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:27:07,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:27:07,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134803803] [2020-07-21 01:27:07,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:27:07,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 01:27:07,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075411880] [2020-07-21 01:27:07,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:27:07,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:07,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:27:07,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:07,324 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 4 states. [2020-07-21 01:27:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:08,103 INFO L93 Difference]: Finished difference Result 586 states and 898 transitions. [2020-07-21 01:27:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:27:08,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-07-21 01:27:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:08,109 INFO L225 Difference]: With dead ends: 586 [2020-07-21 01:27:08,109 INFO L226 Difference]: Without dead ends: 584 [2020-07-21 01:27:08,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:08,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-07-21 01:27:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 441. [2020-07-21 01:27:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-07-21 01:27:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 672 transitions. [2020-07-21 01:27:08,141 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 672 transitions. Word has length 105 [2020-07-21 01:27:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:08,142 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 672 transitions. [2020-07-21 01:27:08,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:27:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 672 transitions. [2020-07-21 01:27:08,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-07-21 01:27:08,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:08,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:08,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:08,361 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:08,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:08,362 INFO L82 PathProgramCache]: Analyzing trace with hash -969660742, now seen corresponding path program 1 times [2020-07-21 01:27:08,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:08,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715228686] [2020-07-21 01:27:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:08,446 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:08,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:08,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:08,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:08,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:08,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715228686] [2020-07-21 01:27:08,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:08,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:08,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440066939] [2020-07-21 01:27:08,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:08,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:08,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:08,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:08,517 INFO L87 Difference]: Start difference. First operand 441 states and 672 transitions. Second operand 5 states. [2020-07-21 01:27:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:09,490 INFO L93 Difference]: Finished difference Result 1178 states and 1823 transitions. [2020-07-21 01:27:09,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:27:09,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-07-21 01:27:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:09,496 INFO L225 Difference]: With dead ends: 1178 [2020-07-21 01:27:09,496 INFO L226 Difference]: Without dead ends: 743 [2020-07-21 01:27:09,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2020-07-21 01:27:09,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 733. [2020-07-21 01:27:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-07-21 01:27:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1019 transitions. [2020-07-21 01:27:09,545 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1019 transitions. Word has length 117 [2020-07-21 01:27:09,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:09,545 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 1019 transitions. [2020-07-21 01:27:09,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:09,546 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1019 transitions. [2020-07-21 01:27:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-21 01:27:09,550 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:09,550 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, 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] [2020-07-21 01:27:09,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:09,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:09,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:09,765 INFO L82 PathProgramCache]: Analyzing trace with hash 839505174, now seen corresponding path program 1 times [2020-07-21 01:27:09,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:09,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902703097] [2020-07-21 01:27:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:09,888 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:09,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:09,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:09,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:10,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:10,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902703097] [2020-07-21 01:27:10,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:10,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:27:10,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009708274] [2020-07-21 01:27:10,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:27:10,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:10,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:27:10,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:10,154 INFO L87 Difference]: Start difference. First operand 733 states and 1019 transitions. Second operand 7 states. [2020-07-21 01:27:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:11,641 INFO L93 Difference]: Finished difference Result 2052 states and 3007 transitions. [2020-07-21 01:27:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:27:11,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-07-21 01:27:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:11,660 INFO L225 Difference]: With dead ends: 2052 [2020-07-21 01:27:11,660 INFO L226 Difference]: Without dead ends: 1325 [2020-07-21 01:27:11,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:27:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-07-21 01:27:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1321. [2020-07-21 01:27:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-07-21 01:27:11,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1886 transitions. [2020-07-21 01:27:11,743 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1886 transitions. Word has length 187 [2020-07-21 01:27:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:11,745 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 1886 transitions. [2020-07-21 01:27:11,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:27:11,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1886 transitions. [2020-07-21 01:27:11,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-21 01:27:11,762 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:11,763 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, 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] [2020-07-21 01:27:11,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:11,964 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1119643437, now seen corresponding path program 1 times [2020-07-21 01:27:11,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:11,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725069893] [2020-07-21 01:27:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:12,068 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:27:12,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:12,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 01:27:12,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 01:27:12,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:12,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725069893] [2020-07-21 01:27:12,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:12,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:12,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044687760] [2020-07-21 01:27:12,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:12,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:12,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:12,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:12,172 INFO L87 Difference]: Start difference. First operand 1321 states and 1886 transitions. Second operand 5 states. [2020-07-21 01:27:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:13,231 INFO L93 Difference]: Finished difference Result 2801 states and 4004 transitions. [2020-07-21 01:27:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:13,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-07-21 01:27:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:13,244 INFO L225 Difference]: With dead ends: 2801 [2020-07-21 01:27:13,244 INFO L226 Difference]: Without dead ends: 1486 [2020-07-21 01:27:13,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2020-07-21 01:27:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1472. [2020-07-21 01:27:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-07-21 01:27:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2067 transitions. [2020-07-21 01:27:13,310 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2067 transitions. Word has length 204 [2020-07-21 01:27:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:13,310 INFO L479 AbstractCegarLoop]: Abstraction has 1472 states and 2067 transitions. [2020-07-21 01:27:13,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:13,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2067 transitions. [2020-07-21 01:27:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-21 01:27:13,315 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:13,316 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, 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] [2020-07-21 01:27:13,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:13,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:13,531 INFO L82 PathProgramCache]: Analyzing trace with hash -109434435, now seen corresponding path program 1 times [2020-07-21 01:27:13,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:13,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983299070] [2020-07-21 01:27:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:13,613 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:27:13,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:13,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:13,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 01:27:13,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:13,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983299070] [2020-07-21 01:27:13,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:13,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:13,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443427528] [2020-07-21 01:27:13,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:13,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:13,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:13,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:13,692 INFO L87 Difference]: Start difference. First operand 1472 states and 2067 transitions. Second operand 5 states. [2020-07-21 01:27:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:14,589 INFO L93 Difference]: Finished difference Result 3127 states and 4601 transitions. [2020-07-21 01:27:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:14,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-07-21 01:27:14,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:14,604 INFO L225 Difference]: With dead ends: 3127 [2020-07-21 01:27:14,605 INFO L226 Difference]: Without dead ends: 1804 [2020-07-21 01:27:14,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:27:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2020-07-21 01:27:14,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1774. [2020-07-21 01:27:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1774 states. [2020-07-21 01:27:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2244 transitions. [2020-07-21 01:27:14,662 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2244 transitions. Word has length 212 [2020-07-21 01:27:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:14,662 INFO L479 AbstractCegarLoop]: Abstraction has 1774 states and 2244 transitions. [2020-07-21 01:27:14,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2244 transitions. [2020-07-21 01:27:14,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-07-21 01:27:14,668 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:14,668 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:14,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:14,882 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:14,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1047580335, now seen corresponding path program 1 times [2020-07-21 01:27:14,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:14,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652402000] [2020-07-21 01:27:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:14,994 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:14,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:14,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:15,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:15,033 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:27:15,034 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:27:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 01:27:15,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:15,199 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:15,201 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:15,204 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:27:15,204 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 156 proven. 82 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 01:27:15,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652402000] [2020-07-21 01:27:15,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:15,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:27:15,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312169354] [2020-07-21 01:27:15,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:27:15,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:15,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:27:15,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:15,332 INFO L87 Difference]: Start difference. First operand 1774 states and 2244 transitions. Second operand 6 states. [2020-07-21 01:27:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:16,448 INFO L93 Difference]: Finished difference Result 3868 states and 5038 transitions. [2020-07-21 01:27:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:27:16,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 274 [2020-07-21 01:27:16,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:16,460 INFO L225 Difference]: With dead ends: 3868 [2020-07-21 01:27:16,460 INFO L226 Difference]: Without dead ends: 2243 [2020-07-21 01:27:16,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 544 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:27:16,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-07-21 01:27:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1639. [2020-07-21 01:27:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1639 states. [2020-07-21 01:27:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 1931 transitions. [2020-07-21 01:27:16,525 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 1931 transitions. Word has length 274 [2020-07-21 01:27:16,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:16,526 INFO L479 AbstractCegarLoop]: Abstraction has 1639 states and 1931 transitions. [2020-07-21 01:27:16,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:27:16,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 1931 transitions. [2020-07-21 01:27:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-07-21 01:27:16,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:16,533 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:16,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:16,746 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:16,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:16,747 INFO L82 PathProgramCache]: Analyzing trace with hash 159388138, now seen corresponding path program 1 times [2020-07-21 01:27:16,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:16,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898575697] [2020-07-21 01:27:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:16,840 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:27:16,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:16,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 01:27:16,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:17,037 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 3 disjuncts [2020-07-21 01:27:17,038 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:27:17,038 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:27:17,040 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:27:17,041 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:27:17,042 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:27:17,043 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:27:17,044 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:27:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 01:27:17,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:17,654 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:27:17,656 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:27:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 165 proven. 82 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-21 01:27:17,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898575697] [2020-07-21 01:27:17,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:17,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2020-07-21 01:27:17,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253381366] [2020-07-21 01:27:17,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 01:27:17,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:17,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 01:27:17,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-07-21 01:27:17,967 INFO L87 Difference]: Start difference. First operand 1639 states and 1931 transitions. Second operand 15 states. [2020-07-21 01:27:19,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:19,451 INFO L93 Difference]: Finished difference Result 3335 states and 4018 transitions. [2020-07-21 01:27:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 01:27:19,452 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 283 [2020-07-21 01:27:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:19,461 INFO L225 Difference]: With dead ends: 3335 [2020-07-21 01:27:19,462 INFO L226 Difference]: Without dead ends: 1786 [2020-07-21 01:27:19,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-07-21 01:27:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-07-21 01:27:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1641. [2020-07-21 01:27:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2020-07-21 01:27:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1928 transitions. [2020-07-21 01:27:19,521 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1928 transitions. Word has length 283 [2020-07-21 01:27:19,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:19,522 INFO L479 AbstractCegarLoop]: Abstraction has 1641 states and 1928 transitions. [2020-07-21 01:27:19,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 01:27:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1928 transitions. [2020-07-21 01:27:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-07-21 01:27:19,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:19,531 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, 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, 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] [2020-07-21 01:27:19,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:19,763 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1577155938, now seen corresponding path program 1 times [2020-07-21 01:27:19,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:19,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882495302] [2020-07-21 01:27:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:19,901 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:19,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:19,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 01:27:19,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:19,947 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:27:19,948 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:19,949 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:19,952 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:19,953 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:19,954 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:19,956 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:19,958 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:40,617 WARN L193 SmtUtils]: Spent 20.61 s on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-07-21 01:27:40,654 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:27:40,776 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 01:27:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 302 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 01:27:41,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:41,187 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 01:27:41,388 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:41,389 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:27:41,390 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,391 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:27:41,394 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,396 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,397 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:27:41,399 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:27:41,401 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:41,402 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:27:41,403 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:27:41,405 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:27:41,407 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:27:41,409 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:41,410 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:27:41,410 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,411 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,413 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:27:41,414 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,416 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,417 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:27:41,419 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:41,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:27:41,421 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,423 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:27:41,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,426 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:27:41,427 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:27:46,743 WARN L193 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 67 DAG size of output: 25 [2020-07-21 01:27:46,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882495302] [2020-07-21 01:27:46,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:27:46,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-21 01:27:46,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160883468] [2020-07-21 01:27:46,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 01:27:46,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:46,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 01:27:46,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-07-21 01:27:46,749 INFO L87 Difference]: Start difference. First operand 1641 states and 1928 transitions. Second operand 9 states. [2020-07-21 01:30:23,577 WARN L193 SmtUtils]: Spent 20.63 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-07-21 01:30:30,279 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-07-21 01:30:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:53,562 INFO L93 Difference]: Finished difference Result 4476 states and 5509 transitions. [2020-07-21 01:30:53,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 01:30:53,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 319 [2020-07-21 01:30:53,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:53,578 INFO L225 Difference]: With dead ends: 4476 [2020-07-21 01:30:53,579 INFO L226 Difference]: Without dead ends: 2984 [2020-07-21 01:30:53,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 505 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=223, Invalid=532, Unknown=1, NotChecked=0, Total=756 [2020-07-21 01:30:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-07-21 01:30:53,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2674. [2020-07-21 01:30:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2020-07-21 01:30:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3228 transitions. [2020-07-21 01:30:53,662 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3228 transitions. Word has length 319 [2020-07-21 01:30:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:53,663 INFO L479 AbstractCegarLoop]: Abstraction has 2674 states and 3228 transitions. [2020-07-21 01:30:53,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 01:30:53,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3228 transitions. [2020-07-21 01:30:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-21 01:30:53,673 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:53,674 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:30:53,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:53,889 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:53,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:53,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1986389201, now seen corresponding path program 1 times [2020-07-21 01:30:53,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:53,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988017974] [2020-07-21 01:30:53,891 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 01:30:54,328 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:30:54,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:54,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:30:54,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-07-21 01:30:54,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:30:54,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988017974] [2020-07-21 01:30:54,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:30:54,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:30:54,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764201263] [2020-07-21 01:30:54,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:30:54,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:54,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:30:54,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:30:54,399 INFO L87 Difference]: Start difference. First operand 2674 states and 3228 transitions. Second operand 3 states. [2020-07-21 01:30:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:55,694 INFO L93 Difference]: Finished difference Result 5199 states and 6301 transitions. [2020-07-21 01:30:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:30:55,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-21 01:30:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:55,716 INFO L225 Difference]: With dead ends: 5199 [2020-07-21 01:30:55,716 INFO L226 Difference]: Without dead ends: 2674 [2020-07-21 01:30:55,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:30:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-07-21 01:30:55,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2529. [2020-07-21 01:30:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2529 states. [2020-07-21 01:30:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 2988 transitions. [2020-07-21 01:30:55,822 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 2988 transitions. Word has length 338 [2020-07-21 01:30:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:55,823 INFO L479 AbstractCegarLoop]: Abstraction has 2529 states and 2988 transitions. [2020-07-21 01:30:55,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:30:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 2988 transitions. [2020-07-21 01:30:55,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-07-21 01:30:55,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:55,833 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, 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, 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] [2020-07-21 01:30:56,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:56,040 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:56,040 INFO L82 PathProgramCache]: Analyzing trace with hash -583400554, now seen corresponding path program 1 times [2020-07-21 01:30:56,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:56,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760801612] [2020-07-21 01:30:56,041 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 01:30:56,218 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:30:56,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:56,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:30:56,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 01:30:56,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:30:56,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760801612] [2020-07-21 01:30:56,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:30:56,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:30:56,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507441009] [2020-07-21 01:30:56,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:30:56,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:56,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:30:56,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:30:56,328 INFO L87 Difference]: Start difference. First operand 2529 states and 2988 transitions. Second operand 3 states. [2020-07-21 01:30:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:57,969 INFO L93 Difference]: Finished difference Result 5195 states and 6182 transitions. [2020-07-21 01:30:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:30:57,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 361 [2020-07-21 01:30:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:57,978 INFO L225 Difference]: With dead ends: 5195 [2020-07-21 01:30:57,978 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:30:57,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:30:57,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:30:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:30:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:30:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:30:57,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 361 [2020-07-21 01:30:57,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:57,990 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:30:57,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:30:57,990 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:30:57,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:30:58,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:58,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:30:58,781 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 146 [2020-07-21 01:30:58,952 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 146 [2020-07-21 01:30:59,152 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-07-21 01:31:00,629 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 170 DAG size of output: 45 [2020-07-21 01:31:01,530 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 37 [2020-07-21 01:31:02,386 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 37 [2020-07-21 01:31:02,392 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:31:02,392 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (or (< 7 ~a19~0) (< |old(~a19~0)| 8)) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 01:31:02,392 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:31:02,392 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 01:31:02,393 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,393 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,393 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,395 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,395 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,396 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,396 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 01:31:02,396 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 01:31:02,396 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 01:31:02,396 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 01:31:02,396 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 01:31:02,396 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 01:31:02,396 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 01:31:02,397 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 01:31:02,397 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 01:31:02,397 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 01:31:02,397 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 01:31:02,397 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,397 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,397 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,397 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,398 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,398 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 01:31:02,398 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 01:31:02,398 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 01:31:02,398 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 01:31:02,398 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 01:31:02,398 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 01:31:02,398 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 01:31:02,398 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 01:31:02,399 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 01:31:02,399 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 01:31:02,399 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 01:31:02,399 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 01:31:02,399 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 01:31:02,399 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-07-21 01:31:02,399 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 01:31:02,399 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,400 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,400 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,400 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,400 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,400 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 01:31:02,400 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 01:31:02,400 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 01:31:02,401 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 01:31:02,401 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 01:31:02,401 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 01:31:02,401 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 01:31:02,401 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 01:31:02,401 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 01:31:02,401 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 01:31:02,402 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,402 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,402 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,402 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,402 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,402 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 01:31:02,402 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 01:31:02,402 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 01:31:02,403 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 01:31:02,403 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 01:31:02,403 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 01:31:02,403 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 01:31:02,403 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 01:31:02,403 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 01:31:02,403 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 01:31:02,403 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 01:31:02,404 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 01:31:02,404 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 01:31:02,404 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,404 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,404 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,404 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,404 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,404 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 01:31:02,405 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 01:31:02,405 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 01:31:02,405 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 01:31:02,405 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 01:31:02,405 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 01:31:02,405 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 01:31:02,405 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 01:31:02,405 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 01:31:02,406 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,406 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,406 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,406 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,406 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,406 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,406 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,406 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 01:31:02,407 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 01:31:02,407 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 01:31:02,407 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 01:31:02,407 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 01:31:02,407 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 01:31:02,407 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 01:31:02,407 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 01:31:02,407 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 01:31:02,407 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 01:31:02,408 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 01:31:02,408 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 01:31:02,408 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 01:31:02,408 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,408 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,408 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,408 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,408 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 01:31:02,409 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,409 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,409 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 01:31:02,409 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 01:31:02,409 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 01:31:02,409 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 01:31:02,409 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 01:31:02,410 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 01:31:02,410 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 01:31:02,410 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 01:31:02,410 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 01:31:02,410 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 01:31:02,410 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 01:31:02,410 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 01:31:02,410 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 01:31:02,410 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,411 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,411 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,411 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,411 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,411 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,411 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 01:31:02,411 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 01:31:02,411 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 01:31:02,411 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 01:31:02,412 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 01:31:02,412 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 01:31:02,412 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 01:31:02,412 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 01:31:02,412 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 01:31:02,412 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 01:31:02,412 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 01:31:02,413 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (not (= 0 ~a12~0))) (.cse1 (not (= 14 ~a4~0))) (.cse2 (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) (.cse3 (not (<= |old(~a10~0)| 2)))) (and (or (not (< 7 |old(~a19~0)|)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 (not (<= |old(~a19~0)| 9)) .cse2 (not (<= 2 |old(~a10~0)|))) (or (not (<= |old(~a19~0)| 6)) .cse0 .cse1 .cse2) (or (not (<= 1 |old(~a10~0)|)) .cse0 .cse1 .cse2 .cse3))) [2020-07-21 01:31:02,413 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 01:31:02,413 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 01:31:02,413 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 01:31:02,413 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,413 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,413 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,413 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,414 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,414 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,414 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 01:31:02,414 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 01:31:02,414 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 01:31:02,414 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 01:31:02,414 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 01:31:02,414 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 01:31:02,414 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 01:31:02,415 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 01:31:02,415 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 01:31:02,415 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 01:31:02,415 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 01:31:02,415 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 01:31:02,415 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 01:31:02,415 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,415 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,416 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,416 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,416 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,416 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,416 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 01:31:02,416 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 01:31:02,416 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 01:31:02,416 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 01:31:02,416 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 01:31:02,417 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 01:31:02,417 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 01:31:02,417 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 01:31:02,417 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 01:31:02,417 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 01:31:02,417 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 01:31:02,417 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 01:31:02,417 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,418 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,418 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,418 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,418 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,418 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:31:02,418 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 01:31:02,418 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 01:31:02,418 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 01:31:02,418 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 01:31:02,419 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 01:31:02,419 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 01:31:02,419 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 01:31:02,419 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 01:31:02,419 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 01:31:02,419 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 01:31:02,419 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 01:31:02,419 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 01:31:02,419 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:31:02,420 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (= 0 ~a12~0) (< 7 ~a19~0) (= 23 ~a1~0)) [2020-07-21 01:31:02,420 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:31:02,420 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:31:02,420 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 01:31:02,420 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:31:02,420 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a10~0 2))) (or (and (<= 1 ~a10~0) .cse0) (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (and .cse0 (< 7 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 2 ~a10~0)))) [2020-07-21 01:31:02,420 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 01:31:02,421 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 01:31:02,421 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a10~0 2))) (or (and (<= 1 ~a10~0) .cse0) (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (and .cse0 (< 7 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 2 ~a10~0)))) [2020-07-21 01:31:02,421 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:31:02,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:31:02 BoogieIcfgContainer [2020-07-21 01:31:02,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:31:02,447 INFO L168 Benchmark]: Toolchain (without parser) took 239384.62 ms. Allocated memory was 137.4 MB in the beginning and 563.6 MB in the end (delta: 426.2 MB). Free memory was 101.0 MB in the beginning and 279.9 MB in the end (delta: -179.0 MB). Peak memory consumption was 447.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:31:02,447 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:31:02,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.88 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 100.8 MB in the beginning and 170.0 MB in the end (delta: -69.2 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:31:02,449 INFO L168 Benchmark]: Boogie Preprocessor took 169.71 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 165.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:31:02,450 INFO L168 Benchmark]: RCFGBuilder took 1420.27 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.6 MB in the beginning and 181.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:31:02,451 INFO L168 Benchmark]: TraceAbstraction took 237092.36 ms. Allocated memory was 234.9 MB in the beginning and 563.6 MB in the end (delta: 328.7 MB). Free memory was 181.4 MB in the beginning and 279.9 MB in the end (delta: -98.5 MB). Peak memory consumption was 430.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:31:02,454 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.88 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 100.8 MB in the beginning and 170.0 MB in the end (delta: -69.2 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.71 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 165.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1420.27 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.6 MB in the beginning and 181.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237092.36 ms. Allocated memory was 234.9 MB in the beginning and 563.6 MB in the end (delta: 328.7 MB). Free memory was 181.4 MB in the beginning and 279.9 MB in the end (delta: -98.5 MB). Peak memory consumption was 430.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 582]: Loop Invariant Derived loop invariant: (((((((((1 <= a10 && a10 <= 2) || a19 <= 6) || !(\old(a10) <= 0)) || !(7 < \old(a19))) || !(23 == \old(a1))) || !(0 == a12)) || (a10 <= 2 && 7 < a19)) || !(14 == a4)) || !(\old(a19) <= 9)) || (a19 <= 9 && 2 <= a10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 232.7s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 198.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 607 SDtfs, 4059 SDslu, 334 SDs, 0 SdLazy, 7688 SolverSat, 1838 SolverUnsat, 72 SolverUnknown, 0 SolverNotchecked, 167.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3517 GetRequests, 3427 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 50.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2674occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 1405 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 117 PreInvPairs, 157 NumberOfFragments, 293 HoareAnnotationTreeSize, 117 FomulaSimplifications, 10500 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7613 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 29.1s InterpolantComputationTime, 2435 NumberOfCodeBlocks, 1913 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3269 ConstructedInterpolants, 6 QuantifiedInterpolants, 3530685 SizeOfPredicates, 24 NumberOfNonLiveVariables, 3572 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 2710/2911 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...