/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:51:37,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:51:37,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:51:37,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:51:37,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:51:37,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:51:37,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:51:37,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:51:37,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:51:37,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:51:37,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:51:37,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:51:37,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:51:37,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:51:37,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:51:37,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:51:37,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:51:37,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:51:37,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:51:37,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:51:37,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:51:37,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:51:37,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:51:37,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:51:37,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:51:37,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:51:37,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:51:37,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:51:37,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:51:37,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:51:37,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:51:37,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:51:37,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:51:37,202 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:51:37,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:51:37,203 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:51:37,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:51:37,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:51:37,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:51:37,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:51:37,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:51:37,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:51:37,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:51:37,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:51:37,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:51:37,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:51:37,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:51:37,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:51:37,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:51:37,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:51:37,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:51:37,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:51:37,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:51:37,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:51:37,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:51:37,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:37,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:51:37,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:51:37,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:51:37,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:51:37,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:51:37,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:51:37,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:51:37,488 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:51:37,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-21 22:51:37,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98016d55e/82449a1f689a43cab27db3c157fc7861/FLAG4d17c7b91 [2020-07-21 22:51:38,132 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:51:38,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-21 22:51:38,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98016d55e/82449a1f689a43cab27db3c157fc7861/FLAG4d17c7b91 [2020-07-21 22:51:38,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98016d55e/82449a1f689a43cab27db3c157fc7861 [2020-07-21 22:51:38,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:51:38,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:51:38,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:51:38,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:51:38,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:51:38,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:51:38" (1/1) ... [2020-07-21 22:51:38,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd08649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:38, skipping insertion in model container [2020-07-21 22:51:38,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:51:38" (1/1) ... [2020-07-21 22:51:38,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:51:38,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:51:38,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:51:39,001 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:51:39,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:51:39,124 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:51:39,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39 WrapperNode [2020-07-21 22:51:39,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:51:39,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:51:39,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:51:39,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:51:39,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:51:39,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:51:39,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:51:39,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:51:39,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:51:39,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:51:39,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:51:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:51:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:51:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:51:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:51:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:51:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:51:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:51:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:51:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:51:40,574 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:51:40,574 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:51:40,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:51:40 BoogieIcfgContainer [2020-07-21 22:51:40,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:51:40,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:51:40,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:51:40,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:51:40,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:51:38" (1/3) ... [2020-07-21 22:51:40,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a7f8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:51:40, skipping insertion in model container [2020-07-21 22:51:40,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (2/3) ... [2020-07-21 22:51:40,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a7f8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:51:40, skipping insertion in model container [2020-07-21 22:51:40,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:51:40" (3/3) ... [2020-07-21 22:51:40,588 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-07-21 22:51:40,598 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:51:40,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:51:40,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:51:40,649 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:51:40,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:51:40,650 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:51:40,650 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:51:40,650 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:51:40,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:51:40,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:51:40,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:51:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 22:51:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-21 22:51:40,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:40,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:40,690 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:40,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1692915649, now seen corresponding path program 1 times [2020-07-21 22:51:40,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:40,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196923968] [2020-07-21 22:51:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:40,911 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:51:40,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:40,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 22:51:40,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:41,356 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 22:51:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:41,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:51:41,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196923968] [2020-07-21 22:51:41,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:51:41,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 22:51:41,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074814429] [2020-07-21 22:51:41,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:51:41,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:41,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:51:41,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:51:41,772 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 22:51:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:43,510 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 22:51:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:51:43,513 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2020-07-21 22:51:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:43,526 INFO L225 Difference]: With dead ends: 472 [2020-07-21 22:51:43,526 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 22:51:43,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 22:51:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 22:51:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 22:51:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 22:51:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 22:51:43,592 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 91 [2020-07-21 22:51:43,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:43,593 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 22:51:43,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:51:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 22:51:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-07-21 22:51:43,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:43,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:43,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:43,812 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:43,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:43,813 INFO L82 PathProgramCache]: Analyzing trace with hash -37114748, now seen corresponding path program 1 times [2020-07-21 22:51:43,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:43,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920160515] [2020-07-21 22:51:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:43,916 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:51:43,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:43,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:51:43,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:43,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:51:43,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920160515] [2020-07-21 22:51:43,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:51:43,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:51:43,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715300970] [2020-07-21 22:51:43,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:51:43,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:43,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:51:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:51:43,955 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 3 states. [2020-07-21 22:51:44,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:44,560 INFO L93 Difference]: Finished difference Result 475 states and 684 transitions. [2020-07-21 22:51:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:51:44,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-07-21 22:51:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:44,566 INFO L225 Difference]: With dead ends: 475 [2020-07-21 22:51:44,567 INFO L226 Difference]: Without dead ends: 338 [2020-07-21 22:51:44,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:51:44,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-07-21 22:51:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2020-07-21 22:51:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-21 22:51:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 467 transitions. [2020-07-21 22:51:44,597 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 467 transitions. Word has length 99 [2020-07-21 22:51:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:44,598 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 467 transitions. [2020-07-21 22:51:44,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:51:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 467 transitions. [2020-07-21 22:51:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-21 22:51:44,601 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:44,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:44,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:44,814 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1027824070, now seen corresponding path program 1 times [2020-07-21 22:51:44,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:44,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058655840] [2020-07-21 22:51:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:44,912 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:51:44,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:44,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:51:44,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:44,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:51:44,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058655840] [2020-07-21 22:51:44,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:51:44,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:51:44,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938960470] [2020-07-21 22:51:44,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:51:44,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:44,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:51:44,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:51:44,951 INFO L87 Difference]: Start difference. First operand 338 states and 467 transitions. Second operand 3 states. [2020-07-21 22:51:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:45,537 INFO L93 Difference]: Finished difference Result 880 states and 1267 transitions. [2020-07-21 22:51:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:51:45,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-07-21 22:51:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:45,550 INFO L225 Difference]: With dead ends: 880 [2020-07-21 22:51:45,551 INFO L226 Difference]: Without dead ends: 608 [2020-07-21 22:51:45,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:51:45,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-07-21 22:51:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2020-07-21 22:51:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-07-21 22:51:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 826 transitions. [2020-07-21 22:51:45,602 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 826 transitions. Word has length 102 [2020-07-21 22:51:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:45,603 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 826 transitions. [2020-07-21 22:51:45,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:51:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 826 transitions. [2020-07-21 22:51:45,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-21 22:51:45,608 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:45,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:45,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:45,823 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:45,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1471633795, now seen corresponding path program 1 times [2020-07-21 22:51:45,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:45,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505870535] [2020-07-21 22:51:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:45,921 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:51:45,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:45,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:51:45,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:45,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:46,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505870535] [2020-07-21 22:51:46,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:46,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:46,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591342369] [2020-07-21 22:51:46,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:46,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:46,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:46,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:46,056 INFO L87 Difference]: Start difference. First operand 608 states and 826 transitions. Second operand 7 states. [2020-07-21 22:51:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:47,261 INFO L93 Difference]: Finished difference Result 2139 states and 3096 transitions. [2020-07-21 22:51:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:51:47,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-07-21 22:51:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:47,279 INFO L225 Difference]: With dead ends: 2139 [2020-07-21 22:51:47,279 INFO L226 Difference]: Without dead ends: 1597 [2020-07-21 22:51:47,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:51:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-07-21 22:51:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1581. [2020-07-21 22:51:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-07-21 22:51:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2096 transitions. [2020-07-21 22:51:47,407 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2096 transitions. Word has length 124 [2020-07-21 22:51:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:47,409 INFO L479 AbstractCegarLoop]: Abstraction has 1581 states and 2096 transitions. [2020-07-21 22:51:47,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2096 transitions. [2020-07-21 22:51:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-21 22:51:47,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:47,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:47,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:47,639 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:47,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1605716217, now seen corresponding path program 1 times [2020-07-21 22:51:47,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:47,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006142374] [2020-07-21 22:51:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:47,791 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:51:47,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:47,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:51:47,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:47,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:47,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006142374] [2020-07-21 22:51:47,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:47,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:47,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980280169] [2020-07-21 22:51:47,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:47,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:47,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:47,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:47,919 INFO L87 Difference]: Start difference. First operand 1581 states and 2096 transitions. Second operand 7 states. [2020-07-21 22:51:48,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:48,792 INFO L93 Difference]: Finished difference Result 3547 states and 4872 transitions. [2020-07-21 22:51:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:51:48,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-07-21 22:51:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:48,807 INFO L225 Difference]: With dead ends: 3547 [2020-07-21 22:51:48,807 INFO L226 Difference]: Without dead ends: 2032 [2020-07-21 22:51:48,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:51:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2020-07-21 22:51:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1718. [2020-07-21 22:51:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-07-21 22:51:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2285 transitions. [2020-07-21 22:51:48,881 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2285 transitions. Word has length 133 [2020-07-21 22:51:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:48,881 INFO L479 AbstractCegarLoop]: Abstraction has 1718 states and 2285 transitions. [2020-07-21 22:51:48,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2285 transitions. [2020-07-21 22:51:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-21 22:51:48,887 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:48,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:49,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:49,101 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:49,102 INFO L82 PathProgramCache]: Analyzing trace with hash 910344196, now seen corresponding path program 1 times [2020-07-21 22:51:49,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:49,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547910468] [2020-07-21 22:51:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:49,201 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:51:49,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:49,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:51:49,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:49,235 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:51:49,235 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:51:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 22:51:49,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:49,547 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:51:49,601 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,604 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,605 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,606 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:49,607 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,608 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:51:49,609 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:49,610 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,611 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,612 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,613 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,614 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,615 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:49,645 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 22:51:49,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547910468] [2020-07-21 22:51:49,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:49,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:49,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793887508] [2020-07-21 22:51:49,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:49,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:49,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:49,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:49,743 INFO L87 Difference]: Start difference. First operand 1718 states and 2285 transitions. Second operand 7 states. [2020-07-21 22:51:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:51,001 INFO L93 Difference]: Finished difference Result 3811 states and 5172 transitions. [2020-07-21 22:51:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:51:51,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-07-21 22:51:51,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:51,015 INFO L225 Difference]: With dead ends: 3811 [2020-07-21 22:51:51,015 INFO L226 Difference]: Without dead ends: 2159 [2020-07-21 22:51:51,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:51:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2020-07-21 22:51:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 1601. [2020-07-21 22:51:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2020-07-21 22:51:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2101 transitions. [2020-07-21 22:51:51,095 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2101 transitions. Word has length 145 [2020-07-21 22:51:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:51,096 INFO L479 AbstractCegarLoop]: Abstraction has 1601 states and 2101 transitions. [2020-07-21 22:51:51,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2101 transitions. [2020-07-21 22:51:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-21 22:51:51,103 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:51,104 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:51,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:51,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:51,318 INFO L82 PathProgramCache]: Analyzing trace with hash 525568454, now seen corresponding path program 1 times [2020-07-21 22:51:51,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:51,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642148727] [2020-07-21 22:51:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:51,410 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:51:51,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:51,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:51:51,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 22:51:51,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:51,662 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:51:51,705 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:51,706 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:51,707 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:51,708 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:51,709 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:51,710 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:51,710 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[7, 2, 1] term [2020-07-21 22:51:51,711 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:51,712 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:51:51,712 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:51,713 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:51,713 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 61 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 22:51:51,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642148727] [2020-07-21 22:51:51,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:51,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:51,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958445901] [2020-07-21 22:51:51,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:51,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:51,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:51,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:51,824 INFO L87 Difference]: Start difference. First operand 1601 states and 2101 transitions. Second operand 7 states. [2020-07-21 22:51:53,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:53,154 INFO L93 Difference]: Finished difference Result 4631 states and 6135 transitions. [2020-07-21 22:51:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:51:53,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-07-21 22:51:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:53,169 INFO L225 Difference]: With dead ends: 4631 [2020-07-21 22:51:53,169 INFO L226 Difference]: Without dead ends: 2542 [2020-07-21 22:51:53,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:51:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2020-07-21 22:51:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2405. [2020-07-21 22:51:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2405 states. [2020-07-21 22:51:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 2899 transitions. [2020-07-21 22:51:53,261 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 2899 transitions. Word has length 148 [2020-07-21 22:51:53,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:53,261 INFO L479 AbstractCegarLoop]: Abstraction has 2405 states and 2899 transitions. [2020-07-21 22:51:53,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 2899 transitions. [2020-07-21 22:51:53,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-07-21 22:51:53,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:53,268 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:53,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:53,482 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:53,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:53,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1371538395, now seen corresponding path program 1 times [2020-07-21 22:51:53,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:53,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481371310] [2020-07-21 22:51:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:53,594 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:51:53,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:53,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:51:53,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-21 22:51:53,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 69 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-07-21 22:51:53,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481371310] [2020-07-21 22:51:53,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:53,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:53,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993185932] [2020-07-21 22:51:53,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:53,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:53,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:53,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:53,792 INFO L87 Difference]: Start difference. First operand 2405 states and 2899 transitions. Second operand 7 states. [2020-07-21 22:51:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:54,518 INFO L93 Difference]: Finished difference Result 5743 states and 7099 transitions. [2020-07-21 22:51:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:51:54,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-07-21 22:51:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:54,538 INFO L225 Difference]: With dead ends: 5743 [2020-07-21 22:51:54,538 INFO L226 Difference]: Without dead ends: 3404 [2020-07-21 22:51:54,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:51:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2020-07-21 22:51:54,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 2955. [2020-07-21 22:51:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2955 states. [2020-07-21 22:51:54,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 3574 transitions. [2020-07-21 22:51:54,650 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 3574 transitions. Word has length 158 [2020-07-21 22:51:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:54,651 INFO L479 AbstractCegarLoop]: Abstraction has 2955 states and 3574 transitions. [2020-07-21 22:51:54,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 3574 transitions. [2020-07-21 22:51:54,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-07-21 22:51:54,662 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:54,662 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:54,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:54,877 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:54,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1629352655, now seen corresponding path program 1 times [2020-07-21 22:51:54,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:54,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147950906] [2020-07-21 22:51:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:54,972 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:51:54,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:54,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:51:54,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:54,996 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-21 22:51:54,997 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:51:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-21 22:51:55,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:55,192 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:55,194 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:55,196 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:55,196 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:55,197 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:55,221 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 75 proven. 32 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-07-21 22:51:55,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147950906] [2020-07-21 22:51:55,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:55,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:55,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819667841] [2020-07-21 22:51:55,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:55,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:55,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:55,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:55,394 INFO L87 Difference]: Start difference. First operand 2955 states and 3574 transitions. Second operand 7 states. [2020-07-21 22:51:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:56,216 INFO L93 Difference]: Finished difference Result 6279 states and 7701 transitions. [2020-07-21 22:51:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:51:56,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-07-21 22:51:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:56,232 INFO L225 Difference]: With dead ends: 6279 [2020-07-21 22:51:56,232 INFO L226 Difference]: Without dead ends: 3390 [2020-07-21 22:51:56,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:51:56,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2020-07-21 22:51:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 3372. [2020-07-21 22:51:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3372 states. [2020-07-21 22:51:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 4030 transitions. [2020-07-21 22:51:56,374 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 4030 transitions. Word has length 164 [2020-07-21 22:51:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:56,375 INFO L479 AbstractCegarLoop]: Abstraction has 3372 states and 4030 transitions. [2020-07-21 22:51:56,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 4030 transitions. [2020-07-21 22:51:56,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-07-21 22:51:56,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:56,389 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:56,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:56,604 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash 801248806, now seen corresponding path program 1 times [2020-07-21 22:51:56,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:56,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857405814] [2020-07-21 22:51:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:56,736 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:51:56,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:56,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:51:56,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-07-21 22:51:56,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:57,042 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:51:57,090 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:57,091 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:57,092 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:57,093 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:51:57,093 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:57,094 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:57,095 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:57,095 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[6, 2, 1] term [2020-07-21 22:51:57,095 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:57,096 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:57,096 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 113 proven. 15 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 22:51:57,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857405814] [2020-07-21 22:51:57,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:57,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:57,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020358031] [2020-07-21 22:51:57,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:57,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:57,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:57,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:57,231 INFO L87 Difference]: Start difference. First operand 3372 states and 4030 transitions. Second operand 7 states. [2020-07-21 22:51:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:58,484 INFO L93 Difference]: Finished difference Result 5477 states and 6566 transitions. [2020-07-21 22:51:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:51:58,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-07-21 22:51:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:58,502 INFO L225 Difference]: With dead ends: 5477 [2020-07-21 22:51:58,502 INFO L226 Difference]: Without dead ends: 3384 [2020-07-21 22:51:58,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:51:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2020-07-21 22:51:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 2161. [2020-07-21 22:51:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2161 states. [2020-07-21 22:51:58,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 2520 transitions. [2020-07-21 22:51:58,593 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 2520 transitions. Word has length 196 [2020-07-21 22:51:58,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:58,594 INFO L479 AbstractCegarLoop]: Abstraction has 2161 states and 2520 transitions. [2020-07-21 22:51:58,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 2520 transitions. [2020-07-21 22:51:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-21 22:51:58,601 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:58,601 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-07-21 22:51:58,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:58,815 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:58,815 INFO L82 PathProgramCache]: Analyzing trace with hash 740758918, now seen corresponding path program 1 times [2020-07-21 22:51:58,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:58,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325794735] [2020-07-21 22:51:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:59,031 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:51:59,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:59,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:51:59,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 110 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 22:51:59,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 22:51:59,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325794735] [2020-07-21 22:51:59,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:59,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-21 22:51:59,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982749354] [2020-07-21 22:51:59,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:51:59,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:59,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:51:59,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:51:59,183 INFO L87 Difference]: Start difference. First operand 2161 states and 2520 transitions. Second operand 5 states. [2020-07-21 22:51:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:59,815 INFO L93 Difference]: Finished difference Result 4548 states and 5386 transitions. [2020-07-21 22:51:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 22:51:59,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-07-21 22:51:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:59,818 INFO L225 Difference]: With dead ends: 4548 [2020-07-21 22:51:59,818 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:51:59,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 408 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:51:59,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:51:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:51:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:51:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:51:59,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2020-07-21 22:51:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:59,828 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:51:59,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:51:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:51:59,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:52:00,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:00,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:52:00,699 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 184 [2020-07-21 22:52:00,909 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 174 [2020-07-21 22:52:02,236 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 220 DAG size of output: 99 [2020-07-21 22:52:03,089 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 59 [2020-07-21 22:52:03,871 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 59 [2020-07-21 22:52:03,875 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:52:03,876 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (<= |old(~a8~0)| ~a8~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 22:52:03,876 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:52:03,876 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 22:52:03,876 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 22:52:03,877 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,877 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,877 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,877 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,877 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,877 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,877 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 22:52:03,878 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 22:52:03,878 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 22:52:03,878 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 22:52:03,878 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 22:52:03,878 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 22:52:03,878 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 22:52:03,878 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 22:52:03,879 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 22:52:03,879 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 22:52:03,879 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,879 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,879 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,879 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,879 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,879 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 22:52:03,880 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 431) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 22:52:03,881 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,882 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,883 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,883 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 22:52:03,883 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 22:52:03,883 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 22:52:03,883 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 22:52:03,883 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 22:52:03,883 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 22:52:03,883 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 22:52:03,884 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 22:52:03,884 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 22:52:03,884 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 22:52:03,884 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 22:52:03,884 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 22:52:03,884 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 22:52:03,884 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,884 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,885 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,885 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,885 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,885 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 22:52:03,885 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 22:52:03,885 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 22:52:03,885 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 22:52:03,885 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 22:52:03,886 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 22:52:03,887 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 22:52:03,887 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 22:52:03,887 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 22:52:03,887 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 22:52:03,887 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 22:52:03,887 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 22:52:03,887 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 22:52:03,887 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 22:52:03,888 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 22:52:03,888 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 22:52:03,888 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 22:52:03,888 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,888 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,888 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,888 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,888 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,888 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,889 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,890 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,890 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,890 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 22:52:03,890 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 22:52:03,890 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 22:52:03,890 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 22:52:03,890 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 22:52:03,890 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 22:52:03,890 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 22:52:03,891 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 22:52:03,891 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 22:52:03,891 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 22:52:03,891 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse20 (= 1 |old(~a21~0)|)) (.cse2 (= ~a17~0 |old(~a17~0)|)) (.cse16 (<= ~a16~0 |old(~a16~0)|)) (.cse17 (= ~a7~0 |old(~a7~0)|)) (.cse18 (<= |old(~a16~0)| ~a16~0)) (.cse3 (<= |old(~a8~0)| ~a8~0)) (.cse19 (= ~a20~0 |old(~a20~0)|)) (.cse10 (= ~a21~0 |old(~a21~0)|))) (let ((.cse1 (= 1 ~a7~0)) (.cse0 (not (= 1 |old(~a7~0)|))) (.cse8 (<= 5 ~a16~0)) (.cse4 (= 1 ~a21~0)) (.cse5 (not (< 13 |old(~a8~0)|))) (.cse12 (and .cse16 .cse17 .cse18 .cse3 (= 1 ~a17~0) .cse19 .cse10)) (.cse14 (and .cse16 .cse17 .cse2 .cse18 .cse3 .cse19 .cse10)) (.cse15 (not (<= |old(~a17~0)| 0))) (.cse7 (not (= 1 |old(~a20~0)|))) (.cse13 (not (<= |old(~a16~0)| 5))) (.cse11 (not (= 1 |old(~a17~0)|))) (.cse9 (not (<= 5 |old(~a16~0)|))) (.cse6 (not .cse20))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4) .cse5 .cse6) (or .cse7 .cse0 .cse8 .cse9 .cse6) (or (and .cse1 .cse2 .cse3 (= 1 ~a20~0) .cse10) .cse7 .cse0 .cse6) (or .cse0 .cse8 .cse5 .cse9 .cse6) (or .cse7 .cse11 .cse9 .cse12) (or .cse13 .cse14 .cse15) (or (and .cse16 .cse17 .cse2 .cse18 .cse3 .cse4 .cse19) .cse5 .cse9 .cse6 .cse15) (or .cse13 .cse14 .cse20) (or .cse7 .cse13 .cse14) (or (not (<= 15 |old(~a8~0)|)) .cse11 .cse12 .cse6) (or .cse7 .cse14 .cse9 .cse15) (or .cse7 (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) .cse13 .cse11 (and (not (= 6 |calculate_output_#in~input|)) (not (= 1 |calculate_output_#in~input|)) (not (= 2 |calculate_output_#in~input|)) (not (= 4 |calculate_output_#in~input|)) (not (= 5 |calculate_output_#in~input|)) (not (= 3 |calculate_output_#in~input|))) .cse9 .cse6 (= 15 ~a8~0) (not (= 8 ~a12~0)))))) [2020-07-21 22:52:03,891 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 22:52:03,892 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 22:52:03,893 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 22:52:03,894 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 22:52:03,895 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 22:52:03,896 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 22:52:03,896 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:52:03,896 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 22:52:03,896 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:52:03,896 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:52:03,896 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|) (= 15 ~a8~0) (= 5 ~a16~0)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a17~0)|)) (not (<= 5 |old(~a16~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 22:52:03,896 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:52:03,896 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse2 (not (= 1 |old(~a7~0)|))) (.cse4 (<= 5 ~a16~0)) (.cse5 (= 1 ~a17~0)) (.cse1 (= 1 ~a20~0)) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a17~0 0)) (.cse7 (= 1 ~a7~0)) (.cse8 (< 13 ~a8~0)) (.cse6 (= 1 ~a21~0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4 .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and (<= 15 ~a8~0) .cse5 .cse6) (and .cse0 (not .cse6)) (not (= 1 |old(~a17~0)|)) (and .cse2 .cse4 .cse5 .cse1) (not (<= 5 |old(~a16~0)|)) (and .cse7 .cse6 .cse1) (and .cse3 .cse0) (not (= 1 |old(~a20~0)|)) (and .cse3 .cse8 .cse6) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)) (and .cse7 .cse8 .cse6))) [2020-07-21 22:52:03,896 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 22:52:03,896 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 22:52:03,897 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse2 (not (= 1 |old(~a7~0)|))) (.cse4 (<= 5 ~a16~0)) (.cse5 (= 1 ~a17~0)) (.cse1 (= 1 ~a20~0)) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a17~0 0)) (.cse7 (= 1 ~a7~0)) (.cse8 (< 13 ~a8~0)) (.cse6 (= 1 ~a21~0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4 .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and (<= 15 ~a8~0) .cse5 .cse6) (and .cse0 (not .cse6)) (not (= 1 |old(~a17~0)|)) (and .cse2 .cse4 .cse5 .cse1) (not (<= 5 |old(~a16~0)|)) (and .cse7 .cse6 .cse1) (and .cse3 .cse0) (not (= 1 |old(~a20~0)|)) (and .cse3 .cse8 .cse6) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)) (and .cse7 .cse8 .cse6))) [2020-07-21 22:52:03,897 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:52:03,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:52:03 BoogieIcfgContainer [2020-07-21 22:52:03,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:52:03,922 INFO L168 Benchmark]: Toolchain (without parser) took 25508.43 ms. Allocated memory was 139.5 MB in the beginning and 534.2 MB in the end (delta: 394.8 MB). Free memory was 102.0 MB in the beginning and 305.2 MB in the end (delta: -203.2 MB). Peak memory consumption was 415.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:03,923 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 22:52:03,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.34 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 101.6 MB in the beginning and 172.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:03,924 INFO L168 Benchmark]: Boogie Preprocessor took 108.49 ms. Allocated memory is still 206.6 MB. Free memory was 172.1 MB in the beginning and 167.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:03,925 INFO L168 Benchmark]: RCFGBuilder took 1343.89 ms. Allocated memory was 206.6 MB in the beginning and 238.6 MB in the end (delta: 32.0 MB). Free memory was 167.1 MB in the beginning and 178.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:03,926 INFO L168 Benchmark]: TraceAbstraction took 23339.15 ms. Allocated memory was 238.6 MB in the beginning and 534.2 MB in the end (delta: 295.7 MB). Free memory was 178.5 MB in the beginning and 305.2 MB in the end (delta: -126.7 MB). Peak memory consumption was 393.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:03,930 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 709.34 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 101.6 MB in the beginning and 172.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.49 ms. Allocated memory is still 206.6 MB. Free memory was 172.1 MB in the beginning and 167.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1343.89 ms. Allocated memory was 206.6 MB in the beginning and 238.6 MB in the end (delta: 32.0 MB). Free memory was 167.1 MB in the beginning and 178.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23339.15 ms. Allocated memory was 238.6 MB in the beginning and 534.2 MB in the end (delta: 295.7 MB). Free memory was 178.5 MB in the beginning and 305.2 MB in the end (delta: -126.7 MB). Peak memory consumption was 393.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 431]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: ((((((((((((((((a16 <= 5 && 1 == a20) || (((!(1 == \old(a7)) && a17 <= 0) && 5 <= a16) && 1 == a20)) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || ((15 <= a8 && 1 == a17) && 1 == a21)) || (a16 <= 5 && !(1 == a21))) || !(1 == \old(a17))) || (((!(1 == \old(a7)) && 5 <= a16) && 1 == a17) && 1 == a20)) || !(5 <= \old(a16))) || ((1 == a7 && 1 == a21) && 1 == a20)) || (a17 <= 0 && a16 <= 5)) || !(1 == \old(a20))) || ((a17 <= 0 && 13 < a8) && 1 == a21)) || !(\old(a16) <= 5)) || !(1 == \old(a21))) || !(8 == a12)) || ((1 == a7 && 13 < a8) && 1 == a21) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.3s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 563 SDtfs, 4837 SDslu, 435 SDs, 0 SdLazy, 8099 SolverSat, 1143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2882 GetRequests, 2794 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3372occurred 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: 0.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 2715 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 143 PreInvPairs, 197 NumberOfFragments, 736 HoareAnnotationTreeSize, 143 FomulaSimplifications, 16496 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 7 FomulaSimplificationsInter, 11071 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1567 NumberOfCodeBlocks, 860 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2823 ConstructedInterpolants, 0 QuantifiedInterpolants, 1248784 SizeOfPredicates, 45 NumberOfNonLiveVariables, 3756 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 1512/1687 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...