/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 NUM_VARIABLES --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/loops-crafted-1/net_reset.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 18:13:28,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 18:13:28,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 18:13:28,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 18:13:28,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 18:13:28,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 18:13:28,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 18:13:28,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 18:13:28,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 18:13:28,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 18:13:28,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 18:13:28,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 18:13:28,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 18:13:28,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 18:13:28,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 18:13:28,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 18:13:28,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 18:13:28,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 18:13:28,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 18:13:28,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 18:13:28,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 18:13:28,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 18:13:28,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 18:13:28,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 18:13:28,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 18:13:28,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 18:13:28,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 18:13:28,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 18:13:28,140 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 [2020-07-20 18:13:28,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 18:13:28,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 18:13:28,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 18:13:28,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 18:13:28,159 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 18:13:28,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 18:13:28,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 18:13:28,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 18:13:28,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 18:13:28,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 18:13:28,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 18:13:28,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 18:13:28,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 18:13:28,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 18:13:28,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 18:13:28,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 18:13:28,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 18:13:28,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 18:13:28,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 18:13:28,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 18:13:28,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 18:13:28,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 18:13:28,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 18:13:28,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 18:13:28,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 18:13:28,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 18:13:28,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:28,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 18:13:28,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 18:13:28,165 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 -> NUM_VARIABLES 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 [2020-07-20 18:13:28,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 18:13:28,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 18:13:28,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 18:13:28,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 18:13:28,517 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 18:13:28,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/net_reset.c [2020-07-20 18:13:28,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4855ab3be/68cca25a5a104612aefef11e3749e861/FLAGb971f83e3 [2020-07-20 18:13:29,164 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 18:13:29,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/net_reset.c [2020-07-20 18:13:29,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4855ab3be/68cca25a5a104612aefef11e3749e861/FLAGb971f83e3 [2020-07-20 18:13:29,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4855ab3be/68cca25a5a104612aefef11e3749e861 [2020-07-20 18:13:29,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 18:13:29,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 18:13:29,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 18:13:29,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 18:13:29,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 18:13:29,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:13:29" (1/1) ... [2020-07-20 18:13:29,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd3c9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:29, skipping insertion in model container [2020-07-20 18:13:29,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:13:29" (1/1) ... [2020-07-20 18:13:29,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 18:13:29,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 18:13:29,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:13:31,159 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 18:13:31,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:13:31,287 INFO L208 MainTranslator]: Completed translation [2020-07-20 18:13:31,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31 WrapperNode [2020-07-20 18:13:31,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 18:13:31,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 18:13:31,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 18:13:31,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 18:13:31,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31" (1/1) ... [2020-07-20 18:13:31,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31" (1/1) ... [2020-07-20 18:13:31,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31" (1/1) ... [2020-07-20 18:13:31,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31" (1/1) ... [2020-07-20 18:13:31,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31" (1/1) ... [2020-07-20 18:13:31,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31" (1/1) ... [2020-07-20 18:13:31,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31" (1/1) ... [2020-07-20 18:13:31,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 18:13:31,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 18:13:31,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 18:13:31,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 18:13:31,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31" (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 [2020-07-20 18:13:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 18:13:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 18:13:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 18:13:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure net_reset [2020-07-20 18:13:31,454 INFO L138 BoogieDeclarations]: Found implementation of procedure net_send_batch [2020-07-20 18:13:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure net_reopen [2020-07-20 18:13:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 18:13:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 18:13:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure net_reset [2020-07-20 18:13:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure net_reopen [2020-07-20 18:13:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure net_send_batch [2020-07-20 18:13:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure addrcmp [2020-07-20 18:13:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 18:13:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 18:13:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 18:13:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 18:13:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 18:13:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 18:13:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 18:13:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 18:13:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 18:13:31,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 18:13:31,904 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 18:13:31,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:13:31 BoogieIcfgContainer [2020-07-20 18:13:31,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 18:13:31,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 18:13:31,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 18:13:31,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 18:13:31,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:13:29" (1/3) ... [2020-07-20 18:13:31,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f099ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:13:31, skipping insertion in model container [2020-07-20 18:13:31,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:31" (2/3) ... [2020-07-20 18:13:31,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f099ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:13:31, skipping insertion in model container [2020-07-20 18:13:31,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:13:31" (3/3) ... [2020-07-20 18:13:31,920 INFO L109 eAbstractionObserver]: Analyzing ICFG net_reset.c [2020-07-20 18:13:31,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 18:13:31,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 18:13:31,962 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 18:13:31,994 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 18:13:31,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 18:13:31,995 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 18:13:31,995 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 18:13:31,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 18:13:31,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 18:13:31,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 18:13:31,996 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 18:13:32,020 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-20 18:13:32,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 18:13:32,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:13:32,030 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] [2020-07-20 18:13:32,031 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:13:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:13:32,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1559425920, now seen corresponding path program 1 times [2020-07-20 18:13:32,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:13:32,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426304560] [2020-07-20 18:13:32,052 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 [2020-07-20 18:13:32,317 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:13:32,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:13:32,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 18:13:32,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:13:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:13:32,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:13:32,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426304560] [2020-07-20 18:13:32,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:13:32,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 18:13:32,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481629019] [2020-07-20 18:13:32,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 18:13:32,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:13:32,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 18:13:32,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 18:13:32,426 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-07-20 18:13:32,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:13:32,511 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-07-20 18:13:32,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 18:13:32,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-20 18:13:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:13:32,521 INFO L225 Difference]: With dead ends: 52 [2020-07-20 18:13:32,521 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 18:13:32,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 18:13:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 18:13:32,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 18:13:32,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 18:13:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 18:13:32,549 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-07-20 18:13:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:13:32,550 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 18:13:32,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 18:13:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 18:13:32,550 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 18:13:32,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:32,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 18:13:32,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 18:13:32,937 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 18:13:32,938 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 18:13:32,938 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 18:13:32,938 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (<= (+ ~batch_at~0 1) ~fstTTL~0) [2020-07-20 18:13:32,938 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 18:13:32,938 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 18:13:32,939 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 231 235) the Hoare annotation is: (or (<= (+ ~batch_at~0 1) ~fstTTL~0) (not (<= (+ |old(~batch_at~0)| 1) ~fstTTL~0))) [2020-07-20 18:13:32,939 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 231 235) no Hoare annotation was computed. [2020-07-20 18:13:32,939 INFO L264 CegarLoopResult]: At program point L233(line 233) the Hoare annotation is: (or (<= (+ ~batch_at~0 1) ~fstTTL~0) (not (<= (+ |old(~batch_at~0)| 1) ~fstTTL~0))) [2020-07-20 18:13:32,939 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 231 235) no Hoare annotation was computed. [2020-07-20 18:13:32,939 INFO L268 CegarLoopResult]: For program point L233-1(line 233) no Hoare annotation was computed. [2020-07-20 18:13:32,940 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 18:13:32,940 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-07-20 18:13:32,940 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 191 196) the Hoare annotation is: true [2020-07-20 18:13:32,940 INFO L268 CegarLoopResult]: For program point L192-2(lines 191 196) no Hoare annotation was computed. [2020-07-20 18:13:32,940 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 191 196) no Hoare annotation was computed. [2020-07-20 18:13:32,940 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2020-07-20 18:13:32,941 INFO L268 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-07-20 18:13:32,941 INFO L268 CegarLoopResult]: For program point net_reopenEXIT(lines 214 229) no Hoare annotation was computed. [2020-07-20 18:13:32,941 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-20 18:13:32,941 INFO L264 CegarLoopResult]: At program point net_reopenENTRY(lines 214 229) the Hoare annotation is: (or (<= (+ ~batch_at~0 1) ~fstTTL~0) (not (<= (+ |old(~batch_at~0)| 1) ~fstTTL~0))) [2020-07-20 18:13:32,941 INFO L268 CegarLoopResult]: For program point net_reopenFINAL(lines 214 229) no Hoare annotation was computed. [2020-07-20 18:13:32,942 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-20 18:13:32,942 INFO L264 CegarLoopResult]: At program point L216(lines 216 226) the Hoare annotation is: (or (<= (+ ~batch_at~0 1) ~fstTTL~0) (not (<= (+ |old(~batch_at~0)| 1) ~fstTTL~0))) [2020-07-20 18:13:32,942 INFO L268 CegarLoopResult]: For program point L228(line 228) no Hoare annotation was computed. [2020-07-20 18:13:32,942 INFO L264 CegarLoopResult]: At program point L227(line 227) the Hoare annotation is: (or (<= (+ ~batch_at~0 1) ~fstTTL~0) (not (<= (+ |old(~batch_at~0)| 1) ~fstTTL~0))) [2020-07-20 18:13:32,942 INFO L264 CegarLoopResult]: At program point L227-1(line 227) the Hoare annotation is: (or (<= (+ ~batch_at~0 1) ~fstTTL~0) (not (<= (+ |old(~batch_at~0)| 1) ~fstTTL~0))) [2020-07-20 18:13:32,943 INFO L271 CegarLoopResult]: At program point net_send_batchENTRY(lines 203 213) the Hoare annotation is: true [2020-07-20 18:13:32,943 INFO L268 CegarLoopResult]: For program point net_send_batchEXIT(lines 203 213) no Hoare annotation was computed. [2020-07-20 18:13:32,943 INFO L268 CegarLoopResult]: For program point net_send_batchFINAL(lines 203 213) no Hoare annotation was computed. [2020-07-20 18:13:32,943 INFO L264 CegarLoopResult]: At program point L208(line 208) the Hoare annotation is: (not (<= (+ ~batch_at~0 1) ~fstTTL~0)) [2020-07-20 18:13:32,943 INFO L268 CegarLoopResult]: For program point L208-1(line 208) no Hoare annotation was computed. [2020-07-20 18:13:32,944 INFO L268 CegarLoopResult]: For program point L208-2(lines 208 209) no Hoare annotation was computed. [2020-07-20 18:13:32,944 INFO L268 CegarLoopResult]: For program point L206-2(lines 206 211) no Hoare annotation was computed. [2020-07-20 18:13:32,944 INFO L264 CegarLoopResult]: At program point L206-3(lines 206 211) the Hoare annotation is: (or (not (<= (+ ~batch_at~0 1) ~fstTTL~0)) (<= ~batch_at~0 net_send_batch_~i~0)) [2020-07-20 18:13:32,944 INFO L268 CegarLoopResult]: For program point L206-4(lines 206 211) no Hoare annotation was computed. [2020-07-20 18:13:32,944 INFO L264 CegarLoopResult]: At program point net_resetENTRY(lines 198 202) the Hoare annotation is: (or (<= (+ ~batch_at~0 1) ~fstTTL~0) (not (<= (+ |old(~batch_at~0)| 1) ~fstTTL~0))) [2020-07-20 18:13:32,945 INFO L268 CegarLoopResult]: For program point net_resetEXIT(lines 198 202) no Hoare annotation was computed. [2020-07-20 18:13:32,945 INFO L268 CegarLoopResult]: For program point net_resetFINAL(lines 198 202) no Hoare annotation was computed. [2020-07-20 18:13:32,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:13:32 BoogieIcfgContainer [2020-07-20 18:13:32,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 18:13:32,973 INFO L168 Benchmark]: Toolchain (without parser) took 3449.92 ms. Allocated memory was 137.9 MB in the beginning and 261.1 MB in the end (delta: 123.2 MB). Free memory was 102.5 MB in the beginning and 73.6 MB in the end (delta: 28.9 MB). Peak memory consumption was 152.1 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:32,974 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 18:13:32,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1759.57 ms. Allocated memory was 137.9 MB in the beginning and 261.1 MB in the end (delta: 123.2 MB). Free memory was 102.0 MB in the beginning and 151.8 MB in the end (delta: -49.7 MB). Peak memory consumption was 185.2 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:32,976 INFO L168 Benchmark]: Boogie Preprocessor took 62.05 ms. Allocated memory is still 261.1 MB. Free memory was 151.8 MB in the beginning and 149.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:32,977 INFO L168 Benchmark]: RCFGBuilder took 557.35 ms. Allocated memory is still 261.1 MB. Free memory was 149.9 MB in the beginning and 125.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:32,978 INFO L168 Benchmark]: TraceAbstraction took 1059.33 ms. Allocated memory is still 261.1 MB. Free memory was 124.0 MB in the beginning and 73.6 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:32,983 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1759.57 ms. Allocated memory was 137.9 MB in the beginning and 261.1 MB in the end (delta: 123.2 MB). Free memory was 102.0 MB in the beginning and 151.8 MB in the end (delta: -49.7 MB). Peak memory consumption was 185.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.05 ms. Allocated memory is still 261.1 MB. Free memory was 151.8 MB in the beginning and 149.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 557.35 ms. Allocated memory is still 261.1 MB. Free memory was 149.9 MB in the beginning and 125.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1059.33 ms. Allocated memory is still 261.1 MB. Free memory was 124.0 MB in the beginning and 73.6 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 193]: 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: 206]: Loop Invariant Derived loop invariant: !(batch_at + 1 <= fstTTL) || batch_at <= i - InvariantResult [Line: 216]: Loop Invariant Derived loop invariant: batch_at + 1 <= fstTTL || !(\old(batch_at) + 1 <= fstTTL) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 28 SDslu, 18 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 15 NumberOfFragments, 109 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 760 SizeOfPredicates, 3 NumberOfNonLiveVariables, 157 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...