./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/verifythis/lcp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/verifythis/lcp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 99469a4d9e5d9407366653a2d47248a07b3d0735 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 17:59:34,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:59:34,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:59:34,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:59:34,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:59:34,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:59:34,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:59:34,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:59:34,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:59:34,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:59:34,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:59:34,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:59:34,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:59:34,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:59:34,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:59:34,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:59:34,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:59:34,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:59:34,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:59:34,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:59:34,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:59:34,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:59:34,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:59:34,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:59:34,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:59:34,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:59:34,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:59:34,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:59:34,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:59:34,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:59:34,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:59:34,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:59:34,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:59:34,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:59:34,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:59:34,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:59:34,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:59:34,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:59:34,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:59:34,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:59:34,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:59:34,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:59:34,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:59:34,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:59:34,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:59:34,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:59:34,263 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:59:34,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:59:34,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:59:34,264 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:59:34,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:59:34,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:59:34,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:59:34,265 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:59:34,265 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:59:34,265 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:59:34,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:59:34,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:59:34,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:59:34,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:59:34,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:59:34,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:59:34,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:59:34,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:59:34,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:59:34,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:59:34,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:59:34,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:59:34,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:59:34,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:59:34,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99469a4d9e5d9407366653a2d47248a07b3d0735 [2020-10-19 17:59:34,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:59:34,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:59:34,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:59:34,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:59:34,656 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:59:34,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2020-10-19 17:59:34,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44c4104c/d04c0737ab52454da527f4d21e9f59af/FLAG60b3c6594 [2020-10-19 17:59:35,175 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:59:35,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2020-10-19 17:59:35,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44c4104c/d04c0737ab52454da527f4d21e9f59af/FLAG60b3c6594 [2020-10-19 17:59:35,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44c4104c/d04c0737ab52454da527f4d21e9f59af [2020-10-19 17:59:35,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:59:35,477 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:59:35,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:59:35,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:59:35,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:59:35,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:59:35" (1/1) ... [2020-10-19 17:59:35,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148a0c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35, skipping insertion in model container [2020-10-19 17:59:35,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:59:35" (1/1) ... [2020-10-19 17:59:35,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:59:35,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:59:35,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:59:35,836 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:59:35,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:59:35,970 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:59:35,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35 WrapperNode [2020-10-19 17:59:35,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:59:35,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:59:35,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:59:35,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:59:35,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35" (1/1) ... [2020-10-19 17:59:35,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35" (1/1) ... [2020-10-19 17:59:36,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35" (1/1) ... [2020-10-19 17:59:36,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35" (1/1) ... [2020-10-19 17:59:36,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35" (1/1) ... [2020-10-19 17:59:36,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35" (1/1) ... [2020-10-19 17:59:36,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35" (1/1) ... [2020-10-19 17:59:36,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:59:36,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:59:36,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:59:36,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:59:36,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35" (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 [2020-10-19 17:59:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:59:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:59:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-19 17:59:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 17:59:36,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-19 17:59:36,092 INFO L138 BoogieDeclarations]: Found implementation of procedure lcp [2020-10-19 17:59:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-19 17:59:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:59:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-19 17:59:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:59:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:59:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:59:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:59:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-19 17:59:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 17:59:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 17:59:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:59:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-19 17:59:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure lcp [2020-10-19 17:59:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 17:59:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-19 17:59:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:59:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 17:59:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-19 17:59:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:59:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:59:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 17:59:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:59:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 17:59:36,563 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:59:36,564 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 17:59:36,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:59:36 BoogieIcfgContainer [2020-10-19 17:59:36,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:59:36,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:59:36,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:59:36,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:59:36,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:59:35" (1/3) ... [2020-10-19 17:59:36,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef62656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:59:36, skipping insertion in model container [2020-10-19 17:59:36,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:59:35" (2/3) ... [2020-10-19 17:59:36,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef62656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:59:36, skipping insertion in model container [2020-10-19 17:59:36,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:59:36" (3/3) ... [2020-10-19 17:59:36,576 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2020-10-19 17:59:36,588 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:59:36,595 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-19 17:59:36,609 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-19 17:59:36,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:59:36,625 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:59:36,626 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:59:36,626 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:59:36,626 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:59:36,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:59:36,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:59:36,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:59:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-10-19 17:59:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 17:59:36,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:36,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:36,658 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 17:59:36,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:36,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1089685107, now seen corresponding path program 1 times [2020-10-19 17:59:36,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:59:36,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497310149] [2020-10-19 17:59:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:59:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:36,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:59:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:36,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 17:59:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 17:59:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:36,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 17:59:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 17:59:36,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497310149] [2020-10-19 17:59:36,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:36,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:59:36,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689503345] [2020-10-19 17:59:36,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:59:36,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:59:36,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:59:36,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:59:36,952 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 4 states. [2020-10-19 17:59:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:37,198 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-10-19 17:59:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:59:37,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 17:59:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:37,212 INFO L225 Difference]: With dead ends: 74 [2020-10-19 17:59:37,213 INFO L226 Difference]: Without dead ends: 71 [2020-10-19 17:59:37,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:59:37,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-19 17:59:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-19 17:59:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-19 17:59:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-10-19 17:59:37,269 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 27 [2020-10-19 17:59:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:37,269 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-10-19 17:59:37,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:59:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-10-19 17:59:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 17:59:37,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:37,272 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:37,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 17:59:37,273 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 17:59:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:37,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1408605261, now seen corresponding path program 1 times [2020-10-19 17:59:37,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:59:37,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702601474] [2020-10-19 17:59:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:59:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:59:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 17:59:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:37,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 17:59:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 17:59:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 17:59:37,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702601474] [2020-10-19 17:59:37,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:37,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 17:59:37,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856414300] [2020-10-19 17:59:37,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 17:59:37,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:59:37,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 17:59:37,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:59:37,516 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 8 states. [2020-10-19 17:59:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:38,036 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-19 17:59:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:59:38,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-19 17:59:38,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:38,039 INFO L225 Difference]: With dead ends: 68 [2020-10-19 17:59:38,039 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 17:59:38,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-19 17:59:38,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 17:59:38,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-19 17:59:38,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 17:59:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2020-10-19 17:59:38,051 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 27 [2020-10-19 17:59:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:38,054 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2020-10-19 17:59:38,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 17:59:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2020-10-19 17:59:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 17:59:38,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:38,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:38,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 17:59:38,057 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 17:59:38,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:38,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1408605260, now seen corresponding path program 1 times [2020-10-19 17:59:38,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:59:38,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907866712] [2020-10-19 17:59:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:59:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:38,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:59:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:38,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 17:59:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:38,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 17:59:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 17:59:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:38,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907866712] [2020-10-19 17:59:38,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:38,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 17:59:38,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316246547] [2020-10-19 17:59:38,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 17:59:38,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:59:38,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 17:59:38,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-19 17:59:38,416 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 13 states. [2020-10-19 17:59:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:39,438 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2020-10-19 17:59:39,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 17:59:39,442 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-19 17:59:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:39,446 INFO L225 Difference]: With dead ends: 81 [2020-10-19 17:59:39,446 INFO L226 Difference]: Without dead ends: 81 [2020-10-19 17:59:39,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-10-19 17:59:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-19 17:59:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2020-10-19 17:59:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 17:59:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-10-19 17:59:39,457 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 27 [2020-10-19 17:59:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:39,457 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-10-19 17:59:39,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 17:59:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-10-19 17:59:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 17:59:39,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:39,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:39,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 17:59:39,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 17:59:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:39,460 INFO L82 PathProgramCache]: Analyzing trace with hash -717090093, now seen corresponding path program 1 times [2020-10-19 17:59:39,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:59:39,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485435190] [2020-10-19 17:59:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:59:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:59:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:39,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 17:59:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:39,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 17:59:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 17:59:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:59:39,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485435190] [2020-10-19 17:59:39,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:39,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 17:59:39,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871645696] [2020-10-19 17:59:39,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 17:59:39,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:59:39,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 17:59:39,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-19 17:59:39,762 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 13 states. [2020-10-19 17:59:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:40,664 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-19 17:59:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 17:59:40,668 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-19 17:59:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:40,669 INFO L225 Difference]: With dead ends: 80 [2020-10-19 17:59:40,669 INFO L226 Difference]: Without dead ends: 80 [2020-10-19 17:59:40,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-10-19 17:59:40,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-19 17:59:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2020-10-19 17:59:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-19 17:59:40,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-10-19 17:59:40,686 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 28 [2020-10-19 17:59:40,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:40,686 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-10-19 17:59:40,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 17:59:40,687 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-10-19 17:59:40,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 17:59:40,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:40,690 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] [2020-10-19 17:59:40,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 17:59:40,691 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 17:59:40,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:40,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1920089880, now seen corresponding path program 1 times [2020-10-19 17:59:40,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:59:40,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075100901] [2020-10-19 17:59:40,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:59:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:40,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:59:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:40,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 17:59:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 17:59:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 17:59:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 17:59:40,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075100901] [2020-10-19 17:59:40,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:40,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:59:40,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339148295] [2020-10-19 17:59:40,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:59:40,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:59:40,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:59:40,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:59:40,782 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 5 states. [2020-10-19 17:59:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:41,011 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-10-19 17:59:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:59:41,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-19 17:59:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:41,013 INFO L225 Difference]: With dead ends: 72 [2020-10-19 17:59:41,013 INFO L226 Difference]: Without dead ends: 72 [2020-10-19 17:59:41,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 17:59:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-19 17:59:41,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-19 17:59:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 17:59:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2020-10-19 17:59:41,021 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 30 [2020-10-19 17:59:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:41,022 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2020-10-19 17:59:41,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:59:41,022 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2020-10-19 17:59:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 17:59:41,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:41,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:41,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 17:59:41,024 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 17:59:41,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:41,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1138545446, now seen corresponding path program 1 times [2020-10-19 17:59:41,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:59:41,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779882267] [2020-10-19 17:59:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:59:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:41,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:59:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:41,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 17:59:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:41,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 17:59:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:41,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 17:59:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 17:59:41,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779882267] [2020-10-19 17:59:41,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739621830] [2020-10-19 17:59:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:59:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:41,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-19 17:59:41,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:41,393 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:59:41,394 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:41,402 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:41,403 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:41,403 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-19 17:59:42,360 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:43,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:43,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2020-10-19 17:59:43,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016227139] [2020-10-19 17:59:43,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-19 17:59:43,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:59:43,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-19 17:59:43,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=283, Unknown=1, NotChecked=0, Total=342 [2020-10-19 17:59:43,007 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand 19 states. [2020-10-19 17:59:49,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:49,872 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2020-10-19 17:59:49,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 17:59:49,878 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 33 [2020-10-19 17:59:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:49,879 INFO L225 Difference]: With dead ends: 87 [2020-10-19 17:59:49,879 INFO L226 Difference]: Without dead ends: 87 [2020-10-19 17:59:49,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=188, Invalid=741, Unknown=1, NotChecked=0, Total=930 [2020-10-19 17:59:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-19 17:59:49,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2020-10-19 17:59:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-19 17:59:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-19 17:59:49,890 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 33 [2020-10-19 17:59:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:49,890 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-19 17:59:49,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-19 17:59:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-19 17:59:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 17:59:49,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:49,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:50,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-19 17:59:50,094 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 17:59:50,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash 935170465, now seen corresponding path program 1 times [2020-10-19 17:59:50,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:59:50,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093879910] [2020-10-19 17:59:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:59:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:59:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:50,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 17:59:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 17:59:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:50,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 17:59:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 17:59:50,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093879910] [2020-10-19 17:59:50,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989958074] [2020-10-19 17:59:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:59:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:50,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 17:59:50,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:50,390 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 17:59:50,390 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:59:50,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:59:50,398 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:59:50,398 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-19 17:59:51,038 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 17:59:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:59:51,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:51,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2020-10-19 17:59:51,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188609075] [2020-10-19 17:59:51,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-19 17:59:51,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:59:51,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-19 17:59:51,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-19 17:59:51,148 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 21 states. [2020-10-19 17:59:52,483 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-19 17:59:52,653 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-10-19 17:59:52,849 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-19 17:59:53,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:53,670 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2020-10-19 17:59:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 17:59:53,671 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 34 [2020-10-19 17:59:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:53,673 INFO L225 Difference]: With dead ends: 86 [2020-10-19 17:59:53,674 INFO L226 Difference]: Without dead ends: 86 [2020-10-19 17:59:53,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2020-10-19 17:59:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-19 17:59:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2020-10-19 17:59:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 17:59:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-19 17:59:53,682 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 34 [2020-10-19 17:59:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:53,683 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-19 17:59:53,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-19 17:59:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-19 17:59:53,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-19 17:59:53,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:53,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:53,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:59:53,889 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 17:59:53,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:53,890 INFO L82 PathProgramCache]: Analyzing trace with hash -849808455, now seen corresponding path program 1 times [2020-10-19 17:59:53,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:59:53,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466002865] [2020-10-19 17:59:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:59:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:59:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 17:59:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 17:59:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 17:59:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 17:59:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-19 17:59:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:59:54,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466002865] [2020-10-19 17:59:54,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:59:54,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 17:59:54,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109855392] [2020-10-19 17:59:54,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 17:59:54,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:59:54,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 17:59:54,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-19 17:59:54,106 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 12 states. [2020-10-19 17:59:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:59:54,662 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2020-10-19 17:59:54,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 17:59:54,663 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-19 17:59:54,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:59:54,664 INFO L225 Difference]: With dead ends: 84 [2020-10-19 17:59:54,664 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 17:59:54,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-19 17:59:54,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 17:59:54,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-19 17:59:54,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 17:59:54,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-19 17:59:54,671 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 39 [2020-10-19 17:59:54,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:59:54,672 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-19 17:59:54,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 17:59:54,672 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-19 17:59:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 17:59:54,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:59:54,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:59:54,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 17:59:54,675 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 17:59:54,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:59:54,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1079363627, now seen corresponding path program 1 times [2020-10-19 17:59:54,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:59:54,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636543091] [2020-10-19 17:59:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:59:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:59:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 17:59:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 17:59:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 17:59:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:54,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 17:59:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:55,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-19 17:59:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:59:55,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636543091] [2020-10-19 17:59:55,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126077862] [2020-10-19 17:59:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:59:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:59:55,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 47 conjunts are in the unsatisfiable core [2020-10-19 17:59:55,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:59:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 17:59:55,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:59:55,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2020-10-19 17:59:55,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19756670] [2020-10-19 17:59:55,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-19 17:59:55,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:59:55,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-19 17:59:55,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2020-10-19 17:59:55,855 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 28 states. [2020-10-19 18:00:01,455 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-19 18:00:02,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:02,065 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2020-10-19 18:00:02,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-19 18:00:02,066 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2020-10-19 18:00:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:02,068 INFO L225 Difference]: With dead ends: 129 [2020-10-19 18:00:02,068 INFO L226 Difference]: Without dead ends: 129 [2020-10-19 18:00:02,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=239, Invalid=1827, Unknown=4, NotChecked=0, Total=2070 [2020-10-19 18:00:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-19 18:00:02,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-10-19 18:00:02,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 18:00:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2020-10-19 18:00:02,080 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 45 [2020-10-19 18:00:02,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:02,081 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2020-10-19 18:00:02,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-19 18:00:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2020-10-19 18:00:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 18:00:02,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:02,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:02,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:00:02,297 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 18:00:02,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:02,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1079363626, now seen corresponding path program 1 times [2020-10-19 18:00:02,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:02,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913486912] [2020-10-19 18:00:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:00:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:00:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:00:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:02,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-19 18:00:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-19 18:00:02,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913486912] [2020-10-19 18:00:02,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78703609] [2020-10-19 18:00:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:00:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:02,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:00:02,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:00:02,514 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:00:02,514 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:00:02,517 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:00:02,517 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:00:02,517 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:00:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-19 18:00:02,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:00:02,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2020-10-19 18:00:02,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461071962] [2020-10-19 18:00:02,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:00:02,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:02,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:00:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:00:02,712 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand 7 states. [2020-10-19 18:00:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:02,887 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-19 18:00:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:00:02,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-19 18:00:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:02,890 INFO L225 Difference]: With dead ends: 109 [2020-10-19 18:00:02,891 INFO L226 Difference]: Without dead ends: 109 [2020-10-19 18:00:02,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:00:02,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-19 18:00:02,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-19 18:00:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-19 18:00:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2020-10-19 18:00:02,899 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 45 [2020-10-19 18:00:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:02,899 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2020-10-19 18:00:02,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:00:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2020-10-19 18:00:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 18:00:02,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:02,901 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-19 18:00:03,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:00:03,115 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 18:00:03,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:03,116 INFO L82 PathProgramCache]: Analyzing trace with hash -899465958, now seen corresponding path program 1 times [2020-10-19 18:00:03,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:03,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094480269] [2020-10-19 18:00:03,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:03,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:03,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:03,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:00:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:00:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:00:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-19 18:00:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 18:00:03,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094480269] [2020-10-19 18:00:03,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31378849] [2020-10-19 18:00:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:00:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:03,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-19 18:00:03,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:00:03,633 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 18:00:03,633 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:00:03,638 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:00:03,639 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:00:03,639 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-19 18:00:07,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:00:09,168 WARN L313 ript$VariableManager]: TermVariabe |aux_div_aux_mod_v_lcp_#in~a.offset_AFTER_CALL_3_65_115| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-19 18:00:09,169 WARN L313 ript$VariableManager]: TermVariabe |aux_div_v_lcp_#in~a.offset_AFTER_CALL_3_65| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-19 18:00:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:09,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:00:09,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2020-10-19 18:00:09,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554875829] [2020-10-19 18:00:09,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-19 18:00:09,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:09,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-19 18:00:09,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1153, Unknown=1, NotChecked=0, Total=1260 [2020-10-19 18:00:09,514 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand 36 states. [2020-10-19 18:00:11,773 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-19 18:00:14,027 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2020-10-19 18:00:14,373 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 86 [2020-10-19 18:00:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:16,041 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-10-19 18:00:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-19 18:00:16,042 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 46 [2020-10-19 18:00:16,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:16,044 INFO L225 Difference]: With dead ends: 120 [2020-10-19 18:00:16,044 INFO L226 Difference]: Without dead ends: 120 [2020-10-19 18:00:16,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=375, Invalid=3164, Unknown=1, NotChecked=0, Total=3540 [2020-10-19 18:00:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-19 18:00:16,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2020-10-19 18:00:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-19 18:00:16,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2020-10-19 18:00:16,053 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 46 [2020-10-19 18:00:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:16,054 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2020-10-19 18:00:16,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-19 18:00:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2020-10-19 18:00:16,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 18:00:16,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:16,055 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-19 18:00:16,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-19 18:00:16,269 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 18:00:16,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:16,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2108403869, now seen corresponding path program 1 times [2020-10-19 18:00:16,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:16,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241181254] [2020-10-19 18:00:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:16,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:00:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:16,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:00:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:16,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:00:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:16,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-19 18:00:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:00:16,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241181254] [2020-10-19 18:00:16,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:16,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-19 18:00:16,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129872557] [2020-10-19 18:00:16,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:00:16,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:16,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:00:16,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:00:16,515 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand 13 states. [2020-10-19 18:00:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:17,244 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-10-19 18:00:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:00:17,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-19 18:00:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:17,247 INFO L225 Difference]: With dead ends: 117 [2020-10-19 18:00:17,247 INFO L226 Difference]: Without dead ends: 117 [2020-10-19 18:00:17,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-10-19 18:00:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-19 18:00:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-19 18:00:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-19 18:00:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 125 transitions. [2020-10-19 18:00:17,255 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 125 transitions. Word has length 51 [2020-10-19 18:00:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:17,255 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 125 transitions. [2020-10-19 18:00:17,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:00:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 125 transitions. [2020-10-19 18:00:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 18:00:17,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:17,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:17,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:00:17,258 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 18:00:17,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:17,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1108738275, now seen corresponding path program 2 times [2020-10-19 18:00:17,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:17,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474055941] [2020-10-19 18:00:17,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:17,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:17,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:17,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:00:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:17,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:00:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:17,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:00:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:17,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-19 18:00:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 18:00:17,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474055941] [2020-10-19 18:00:17,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432151064] [2020-10-19 18:00:17,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:00:17,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:00:17,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:00:17,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 47 conjunts are in the unsatisfiable core [2020-10-19 18:00:17,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:00:19,393 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~x_BEFORE_CALL_2 Int) (v_check_~l_BEFORE_CALL_3 Int) (v_check_~a.base_BEFORE_CALL_4 Int)) (and (<= 0 v_check_~x_BEFORE_CALL_2) (<= (+ (* 4 v_check_~x_BEFORE_CALL_2) (* 4 v_check_~l_BEFORE_CALL_3)) (select |c_#length| v_check_~a.base_BEFORE_CALL_4)))) is different from true [2020-10-19 18:00:21,725 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 18 [2020-10-19 18:00:24,014 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 18 [2020-10-19 18:00:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 18:00:24,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:00:24,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 29 [2020-10-19 18:00:24,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979376850] [2020-10-19 18:00:24,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-19 18:00:24,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:24,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-19 18:00:24,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=746, Unknown=3, NotChecked=54, Total=870 [2020-10-19 18:00:24,128 INFO L87 Difference]: Start difference. First operand 117 states and 125 transitions. Second operand 30 states. [2020-10-19 18:00:28,909 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-19 18:00:29,091 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-19 18:00:29,260 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-10-19 18:00:29,436 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-19 18:00:29,913 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-19 18:00:30,088 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-19 18:00:39,465 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-19 18:00:40,484 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-19 18:00:42,194 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-19 18:00:43,244 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-19 18:00:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:43,786 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-19 18:00:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-19 18:00:43,787 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 51 [2020-10-19 18:00:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:43,789 INFO L225 Difference]: With dead ends: 122 [2020-10-19 18:00:43,789 INFO L226 Difference]: Without dead ends: 122 [2020-10-19 18:00:43,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=305, Invalid=2431, Unknown=24, NotChecked=102, Total=2862 [2020-10-19 18:00:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-19 18:00:43,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2020-10-19 18:00:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-19 18:00:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2020-10-19 18:00:43,797 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 51 [2020-10-19 18:00:43,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:43,798 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2020-10-19 18:00:43,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-19 18:00:43,798 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2020-10-19 18:00:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-19 18:00:43,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:43,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:44,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:00:44,006 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 18:00:44,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:44,007 INFO L82 PathProgramCache]: Analyzing trace with hash -11148184, now seen corresponding path program 2 times [2020-10-19 18:00:44,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:44,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590207946] [2020-10-19 18:00:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:44,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:00:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:00:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:44,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:00:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:00:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:44,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-19 18:00:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 18:00:44,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590207946] [2020-10-19 18:00:44,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014015583] [2020-10-19 18:00:44,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:00:44,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:00:44,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:00:44,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-19 18:00:44,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:00:44,590 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 18:00:44,591 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:00:44,596 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:00:44,596 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:00:44,597 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-19 18:00:52,782 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:00:52,959 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2020-10-19 18:00:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:00:53,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:00:53,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2020-10-19 18:00:53,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750927894] [2020-10-19 18:00:53,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-19 18:00:53,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:53,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-19 18:00:53,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=959, Unknown=2, NotChecked=0, Total=1056 [2020-10-19 18:00:53,900 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 33 states. [2020-10-19 18:00:55,775 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-19 18:00:56,732 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-19 18:00:58,105 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-19 18:01:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:00,070 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2020-10-19 18:01:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-19 18:01:00,071 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 52 [2020-10-19 18:01:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:00,073 INFO L225 Difference]: With dead ends: 144 [2020-10-19 18:01:00,073 INFO L226 Difference]: Without dead ends: 144 [2020-10-19 18:01:00,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=372, Invalid=2818, Unknown=2, NotChecked=0, Total=3192 [2020-10-19 18:01:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-19 18:01:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 78. [2020-10-19 18:01:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-19 18:01:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-19 18:01:00,080 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 52 [2020-10-19 18:01:00,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:00,080 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-19 18:01:00,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-19 18:01:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-19 18:01:00,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-19 18:01:00,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:00,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-19 18:01:00,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-19 18:01:00,298 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 18:01:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1761275622, now seen corresponding path program 1 times [2020-10-19 18:01:00,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:00,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667157107] [2020-10-19 18:01:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:00,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:00,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:00,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:01:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:01:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:01:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:00,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-19 18:01:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:00,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-19 18:01:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-19 18:01:00,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667157107] [2020-10-19 18:01:00,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463986774] [2020-10-19 18:01:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:01:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:00,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 18:01:00,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:00,782 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,787 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,787 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,790 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,821 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,826 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,829 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,834 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,835 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,839 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,845 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,857 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,861 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,862 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-19 18:01:00,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:01:00,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2020-10-19 18:01:00,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641926973] [2020-10-19 18:01:00,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:01:00,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:00,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:01:00,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:01:00,891 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 13 states. [2020-10-19 18:01:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:01,904 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2020-10-19 18:01:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:01:01,905 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-19 18:01:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:01,906 INFO L225 Difference]: With dead ends: 100 [2020-10-19 18:01:01,907 INFO L226 Difference]: Without dead ends: 100 [2020-10-19 18:01:01,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:01:01,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-19 18:01:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2020-10-19 18:01:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-19 18:01:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-19 18:01:01,912 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 54 [2020-10-19 18:01:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:01,912 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-19 18:01:01,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:01:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-19 18:01:01,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-19 18:01:01,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:01,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-19 18:01:02,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-19 18:01:02,126 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 18:01:02,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:02,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1463008020, now seen corresponding path program 1 times [2020-10-19 18:01:02,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:02,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799025690] [2020-10-19 18:01:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:01:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:01:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:01:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-19 18:01:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:01:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 18:01:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:01:02,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799025690] [2020-10-19 18:01:02,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:02,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:01:02,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488234692] [2020-10-19 18:01:02,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:01:02,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:01:02,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:01:02,238 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 6 states. [2020-10-19 18:01:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:02,496 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2020-10-19 18:01:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:01:02,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-19 18:01:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:02,498 INFO L225 Difference]: With dead ends: 91 [2020-10-19 18:01:02,499 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:01:02,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:01:02,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:01:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-19 18:01:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-19 18:01:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-19 18:01:02,504 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 57 [2020-10-19 18:01:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:02,504 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-19 18:01:02,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:01:02,504 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-19 18:01:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-19 18:01:02,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:02,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:02,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:01:02,506 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 18:01:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:02,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1886847620, now seen corresponding path program 1 times [2020-10-19 18:01:02,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:02,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419415540] [2020-10-19 18:01:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:01:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:01:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:01:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-19 18:01:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-19 18:01:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:01:02,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419415540] [2020-10-19 18:01:02,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564217296] [2020-10-19 18:01:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:01:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 44 conjunts are in the unsatisfiable core [2020-10-19 18:01:02,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:02,813 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-19 18:01:02,814 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:02,820 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:02,820 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:02,820 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-19 18:01:03,233 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:04,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:01:04,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 26 [2020-10-19 18:01:04,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860358715] [2020-10-19 18:01:04,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-19 18:01:04,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:04,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-19 18:01:04,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2020-10-19 18:01:04,176 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 26 states. [2020-10-19 18:01:05,909 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-19 18:01:06,109 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-19 18:01:06,337 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-19 18:01:06,618 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-19 18:01:06,890 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-19 18:01:07,141 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-19 18:01:07,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:07,965 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-10-19 18:01:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-19 18:01:07,967 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 57 [2020-10-19 18:01:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:07,968 INFO L225 Difference]: With dead ends: 67 [2020-10-19 18:01:07,968 INFO L226 Difference]: Without dead ends: 64 [2020-10-19 18:01:07,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=277, Invalid=1703, Unknown=0, NotChecked=0, Total=1980 [2020-10-19 18:01:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-19 18:01:07,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2020-10-19 18:01:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-19 18:01:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2020-10-19 18:01:07,972 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2020-10-19 18:01:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:07,972 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2020-10-19 18:01:07,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-19 18:01:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2020-10-19 18:01:07,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 18:01:07,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:07,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-19 18:01:08,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-19 18:01:08,182 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, lcpErr3REQUIRES_VIOLATION, lcpErr2REQUIRES_VIOLATION, lcpErr1REQUIRES_VIOLATION, lcpErr0REQUIRES_VIOLATION, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE, checkErr2REQUIRES_VIOLATION, checkErr3REQUIRES_VIOLATION, checkErr4REQUIRES_VIOLATION, checkErr5REQUIRES_VIOLATION, checkErr0REQUIRES_VIOLATION, checkErr6REQUIRES_VIOLATION, checkErr1REQUIRES_VIOLATION, checkErr7REQUIRES_VIOLATION]=== [2020-10-19 18:01:08,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:08,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1496403191, now seen corresponding path program 1 times [2020-10-19 18:01:08,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:08,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086693178] [2020-10-19 18:01:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:08,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:08,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-19 18:01:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:08,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:01:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-19 18:01:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:08,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-19 18:01:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-19 18:01:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 18:01:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:01:08,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086693178] [2020-10-19 18:01:08,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:08,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:01:08,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601482271] [2020-10-19 18:01:08,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:01:08,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:08,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:01:08,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:01:08,321 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 7 states. [2020-10-19 18:01:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:08,587 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-10-19 18:01:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:01:08,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-10-19 18:01:08,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:08,588 INFO L225 Difference]: With dead ends: 59 [2020-10-19 18:01:08,589 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:01:08,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:01:08,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:01:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:01:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:01:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:01:08,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2020-10-19 18:01:08,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:08,590 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:01:08,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:01:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:01:08,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:01:08,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:01:08,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:01:08 BoogieIcfgContainer [2020-10-19 18:01:08,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:01:08,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:01:08,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:01:08,598 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:01:08,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:59:36" (3/4) ... [2020-10-19 18:01:08,603 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:01:08,612 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-19 18:01:08,613 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 18:01:08,613 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure lcp [2020-10-19 18:01:08,613 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2020-10-19 18:01:08,614 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 18:01:08,614 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2020-10-19 18:01:08,614 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2020-10-19 18:01:08,614 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2020-10-19 18:01:08,625 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2020-10-19 18:01:08,625 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-10-19 18:01:08,626 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-19 18:01:08,626 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:01:08,627 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 18:01:08,681 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:01:08,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:01:08,683 INFO L168 Benchmark]: Toolchain (without parser) took 93212.06 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 353.9 MB). Free memory was 958.6 MB in the beginning and 1.2 GB in the end (delta: -201.4 MB). Peak memory consumption was 152.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:08,684 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:08,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:08,685 INFO L168 Benchmark]: Boogie Preprocessor took 53.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:08,685 INFO L168 Benchmark]: RCFGBuilder took 541.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:08,686 INFO L168 Benchmark]: TraceAbstraction took 92029.22 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 218.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -78.3 MB). Peak memory consumption was 139.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:08,686 INFO L168 Benchmark]: Witness Printer took 83.88 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:08,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 492.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 541.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 92029.22 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 218.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -78.3 MB). Peak memory consumption was 139.8 MB. Max. memory is 11.5 GB. * Witness Printer took 83.88 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 47]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 47]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 35]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 47]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 32]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 32]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 32]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 32]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 77 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 91.9s, OverallIterations: 18, TraceHistogramMax: 3, AutomataDifference: 57.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 718 SDtfs, 2757 SDslu, 1328 SDs, 0 SdLazy, 11494 SolverSat, 944 SolverUnsat, 59 SolverUnknown, 0 SolverNotchecked, 21.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 980 GetRequests, 489 SyntacticMatches, 34 SemanticMatches, 457 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2779 ImplicationChecksByTransitivity, 60.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 159 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 30.6s InterpolantComputationTime, 1179 NumberOfCodeBlocks, 1179 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1152 ConstructedInterpolants, 137 QuantifiedInterpolants, 433665 SizeOfPredicates, 101 NumberOfNonLiveVariables, 2177 ConjunctsInSsa, 297 ConjunctsInUnsatCore, 27 InterpolantComputations, 10 PerfectInterpolantSequences, 276/361 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...