./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0235-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/memsafety/test-0235-3.i -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 3800c354b942cbeb9da811279120cfec18cb92a7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/memsafety/test-0235-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 3800c354b942cbeb9da811279120cfec18cb92a7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:07:50,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:07:50,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:07:50,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:07:50,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:07:50,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:07:50,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:07:50,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:07:50,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:07:50,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:07:50,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:07:50,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:07:50,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:07:50,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:07:50,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:07:50,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:07:50,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:07:50,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:07:50,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:07:50,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:07:50,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:07:50,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:07:50,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:07:50,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:07:50,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:07:50,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:07:50,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:07:50,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:07:50,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:07:50,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:07:50,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:07:50,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:07:50,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:07:50,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:07:50,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:07:50,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:07:50,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:07:50,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:07:50,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:07:50,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:07:50,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:07:50,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:07:50,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:07:50,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:07:50,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:07:50,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:07:50,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:07:50,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:07:50,122 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:07:50,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:07:50,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:07:50,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:07:50,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:07:50,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:07:50,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:07:50,123 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:07:50,124 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:07:50,124 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:07:50,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:07:50,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:07:50,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:07:50,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:07:50,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:07:50,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:07:50,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:07:50,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:07:50,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:07:50,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:07:50,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:07:50,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:07:50,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:07:50,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3800c354b942cbeb9da811279120cfec18cb92a7 [2021-08-30 17:07:50,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:07:50,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:07:50,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:07:50,381 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:07:50,381 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:07:50,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-3.i [2021-08-30 17:07:50,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28941deaa/2c620517c4834f41a29895f219a1042b/FLAG34dd2539a [2021-08-30 17:07:50,788 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:07:50,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i [2021-08-30 17:07:50,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28941deaa/2c620517c4834f41a29895f219a1042b/FLAG34dd2539a [2021-08-30 17:07:51,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28941deaa/2c620517c4834f41a29895f219a1042b [2021-08-30 17:07:51,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:07:51,166 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:07:51,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:07:51,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:07:51,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:07:51,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52971a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51, skipping insertion in model container [2021-08-30 17:07:51,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:07:51,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:07:51,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:07:51,474 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:07:51,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:07:51,541 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:07:51,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51 WrapperNode [2021-08-30 17:07:51,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:07:51,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:07:51,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:07:51,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:07:51,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:07:51,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:07:51,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:07:51,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:07:51,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51" (1/1) ... [2021-08-30 17:07:51,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:07:51,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:07:51,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:07:51,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:07:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:07:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:07:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:07:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:07:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:07:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:07:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:07:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:07:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-30 17:07:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-08-30 17:07:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-08-30 17:07:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-08-30 17:07:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-30 17:07:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-30 17:07:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-08-30 17:07:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-08-30 17:07:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-08-30 17:07:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-30 17:07:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-08-30 17:07:51,678 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-08-30 17:07:51,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:07:51,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:07:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:07:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:07:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:07:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:07:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:07:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:07:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:07:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:07:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:07:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:07:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:07:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:07:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:07:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:07:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:07:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:07:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:07:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:07:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:07:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:07:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:07:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:07:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:07:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:07:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:07:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:07:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:07:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:07:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:07:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:07:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:07:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:07:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:07:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:07:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:07:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:07:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:07:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:07:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:07:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:07:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:07:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:07:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:07:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:07:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:07:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:07:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:07:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:07:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:07:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:07:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:07:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:07:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:07:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:07:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:07:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:07:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:07:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:07:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:07:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:07:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:07:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-30 17:07:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-30 17:07:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-30 17:07:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-30 17:07:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-08-30 17:07:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-08-30 17:07:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:07:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:07:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 17:07:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:07:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:07:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 17:07:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 17:07:52,013 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:07:52,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:07:52,136 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-30 17:07:52,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:07:52 BoogieIcfgContainer [2021-08-30 17:07:52,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:07:52,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:07:52,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:07:52,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:07:52,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:07:51" (1/3) ... [2021-08-30 17:07:52,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218438a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:07:52, skipping insertion in model container [2021-08-30 17:07:52,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:07:51" (2/3) ... [2021-08-30 17:07:52,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218438a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:07:52, skipping insertion in model container [2021-08-30 17:07:52,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:07:52" (3/3) ... [2021-08-30 17:07:52,146 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0235-3.i [2021-08-30 17:07:52,150 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:07:52,150 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 89 error locations. [2021-08-30 17:07:52,185 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:07:52,190 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:07:52,191 INFO L340 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2021-08-30 17:07:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 151 states have (on average 1.7615894039735098) internal successors, (266), 235 states have internal predecessors, (266), 26 states have call successors, (26), 15 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-08-30 17:07:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:07:52,226 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:52,226 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:07:52,227 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:07:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1939617680, now seen corresponding path program 1 times [2021-08-30 17:07:52,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:07:52,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927151224] [2021-08-30 17:07:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:52,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:07:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:07:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:07:52,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:07:52,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927151224] [2021-08-30 17:07:52,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927151224] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:07:52,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:07:52,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:07:52,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811607884] [2021-08-30 17:07:52,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:07:52,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:07:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:07:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:07:52,484 INFO L87 Difference]: Start difference. First operand has 276 states, 151 states have (on average 1.7615894039735098) internal successors, (266), 235 states have internal predecessors, (266), 26 states have call successors, (26), 15 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:07:53,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:07:53,064 INFO L93 Difference]: Finished difference Result 386 states and 447 transitions. [2021-08-30 17:07:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:07:53,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:07:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:07:53,079 INFO L225 Difference]: With dead ends: 386 [2021-08-30 17:07:53,079 INFO L226 Difference]: Without dead ends: 383 [2021-08-30 17:07:53,081 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:07:53,084 INFO L928 BasicCegarLoop]: 53 mSDtfsCounter, 125 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 414.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.99ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.87ms IncrementalHoareTripleChecker+Time [2021-08-30 17:07:53,085 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 61 Invalid, 555 Unknown, 0 Unchecked, 10.99ms Time], IncrementalHoareTripleChecker [34 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 502.87ms Time] [2021-08-30 17:07:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-08-30 17:07:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 273. [2021-08-30 17:07:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 145 states have (on average 1.7448275862068965) internal successors, (253), 233 states have internal predecessors, (253), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-08-30 17:07:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 304 transitions. [2021-08-30 17:07:53,148 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 304 transitions. Word has length 7 [2021-08-30 17:07:53,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:07:53,148 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 304 transitions. [2021-08-30 17:07:53,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:07:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 304 transitions. [2021-08-30 17:07:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 17:07:53,149 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:53,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:07:53,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 17:07:53,149 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:07:53,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:53,150 INFO L82 PathProgramCache]: Analyzing trace with hash 127402385, now seen corresponding path program 1 times [2021-08-30 17:07:53,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:07:53,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593700668] [2021-08-30 17:07:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:53,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:07:53,183 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:07:53,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266736198] [2021-08-30 17:07:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:53,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:07:53,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:07:53,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:07:53,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 17:07:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:53,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:07:53,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:53,468 INFO L388 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 [2021-08-30 17:07:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:07:53,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:07:53,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:07:53,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593700668] [2021-08-30 17:07:53,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:07:53,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266736198] [2021-08-30 17:07:53,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266736198] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:07:53,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:07:53,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 17:07:53,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402330087] [2021-08-30 17:07:53,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:07:53,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:07:53,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:07:53,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:07:53,476 INFO L87 Difference]: Start difference. First operand 273 states and 304 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:07:53,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:07:53,747 INFO L93 Difference]: Finished difference Result 272 states and 303 transitions. [2021-08-30 17:07:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:07:53,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 17:07:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:07:53,749 INFO L225 Difference]: With dead ends: 272 [2021-08-30 17:07:53,749 INFO L226 Difference]: Without dead ends: 272 [2021-08-30 17:07:53,749 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:07:53,750 INFO L928 BasicCegarLoop]: 51 mSDtfsCounter, 3 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 200.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.93ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254.82ms IncrementalHoareTripleChecker+Time [2021-08-30 17:07:53,750 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 502 Unknown, 0 Unchecked, 2.93ms Time], IncrementalHoareTripleChecker [0 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 254.82ms Time] [2021-08-30 17:07:53,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-08-30 17:07:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-08-30 17:07:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 145 states have (on average 1.7379310344827585) internal successors, (252), 232 states have internal predecessors, (252), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-08-30 17:07:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 303 transitions. [2021-08-30 17:07:53,766 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 303 transitions. Word has length 12 [2021-08-30 17:07:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:07:53,766 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 303 transitions. [2021-08-30 17:07:53,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:07:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 303 transitions. [2021-08-30 17:07:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 17:07:53,767 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:53,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:07:53,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:53,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:07:53,968 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:07:53,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:53,968 INFO L82 PathProgramCache]: Analyzing trace with hash 127402386, now seen corresponding path program 1 times [2021-08-30 17:07:53,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:07:53,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298150165] [2021-08-30 17:07:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:53,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:07:53,979 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:07:53,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752841345] [2021-08-30 17:07:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:53,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:07:53,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:07:53,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:07:54,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 17:07:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:54,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 17:07:54,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:54,179 INFO L388 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 [2021-08-30 17:07:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:07:54,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:07:54,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:07:54,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298150165] [2021-08-30 17:07:54,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:07:54,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752841345] [2021-08-30 17:07:54,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752841345] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:07:54,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:07:54,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:07:54,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584292891] [2021-08-30 17:07:54,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:07:54,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:07:54,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:07:54,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:07:54,200 INFO L87 Difference]: Start difference. First operand 272 states and 303 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:07:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:07:54,747 INFO L93 Difference]: Finished difference Result 271 states and 302 transitions. [2021-08-30 17:07:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:07:54,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 17:07:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:07:54,748 INFO L225 Difference]: With dead ends: 271 [2021-08-30 17:07:54,749 INFO L226 Difference]: Without dead ends: 271 [2021-08-30 17:07:54,749 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.78ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:07:54,749 INFO L928 BasicCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 400.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.28ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 510.90ms IncrementalHoareTripleChecker+Time [2021-08-30 17:07:54,750 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 210 Invalid, 1284 Unknown, 0 Unchecked, 6.28ms Time], IncrementalHoareTripleChecker [9 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 510.90ms Time] [2021-08-30 17:07:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-08-30 17:07:54,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-08-30 17:07:54,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 231 states have internal predecessors, (251), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-08-30 17:07:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 302 transitions. [2021-08-30 17:07:54,755 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 302 transitions. Word has length 12 [2021-08-30 17:07:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:07:54,755 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 302 transitions. [2021-08-30 17:07:54,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:07:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 302 transitions. [2021-08-30 17:07:54,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-30 17:07:54,758 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:54,758 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:07:54,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:54,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-30 17:07:54,973 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:07:54,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:54,974 INFO L82 PathProgramCache]: Analyzing trace with hash -681853238, now seen corresponding path program 1 times [2021-08-30 17:07:54,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:07:54,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451333843] [2021-08-30 17:07:54,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:54,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:07:54,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:07:54,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275223153] [2021-08-30 17:07:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:54,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:07:54,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:07:54,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:07:55,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 17:07:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:55,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-30 17:07:55,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:55,474 INFO L388 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 [2021-08-30 17:07:55,591 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:07:55,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-08-30 17:07:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-08-30 17:07:55,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:07:55,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:07:55,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451333843] [2021-08-30 17:07:55,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:07:55,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275223153] [2021-08-30 17:07:55,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275223153] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 17:07:55,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:07:55,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-30 17:07:55,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307593989] [2021-08-30 17:07:55,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:07:55,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:07:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:07:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:07:55,782 INFO L87 Difference]: Start difference. First operand 271 states and 302 transitions. Second operand has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-30 17:07:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:07:56,547 INFO L93 Difference]: Finished difference Result 380 states and 441 transitions. [2021-08-30 17:07:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 17:07:56,548 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2021-08-30 17:07:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:07:56,550 INFO L225 Difference]: With dead ends: 380 [2021-08-30 17:07:56,550 INFO L226 Difference]: Without dead ends: 380 [2021-08-30 17:07:56,550 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 112 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 192.53ms TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-08-30 17:07:56,551 INFO L928 BasicCegarLoop]: 44 mSDtfsCounter, 132 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 510.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.85ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 416 IncrementalHoareTripleChecker+Unchecked, 665.86ms IncrementalHoareTripleChecker+Time [2021-08-30 17:07:56,551 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 130 Invalid, 1835 Unknown, 0 Unchecked, 8.85ms Time], IncrementalHoareTripleChecker [34 Valid, 1385 Invalid, 0 Unknown, 416 Unchecked, 665.86ms Time] [2021-08-30 17:07:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-08-30 17:07:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 270. [2021-08-30 17:07:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 230 states have internal predecessors, (250), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-08-30 17:07:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 301 transitions. [2021-08-30 17:07:56,564 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 301 transitions. Word has length 123 [2021-08-30 17:07:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:07:56,565 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 301 transitions. [2021-08-30 17:07:56,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-30 17:07:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 301 transitions. [2021-08-30 17:07:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-30 17:07:56,567 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:56,567 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:07:56,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:56,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:07:56,788 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:07:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:56,789 INFO L82 PathProgramCache]: Analyzing trace with hash -681853237, now seen corresponding path program 1 times [2021-08-30 17:07:56,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:07:56,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954094633] [2021-08-30 17:07:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:56,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:07:56,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:07:56,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008604700] [2021-08-30 17:07:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:56,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:07:56,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:07:56,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:07:56,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 17:07:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:57,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 55 conjunts are in the unsatisfiable core [2021-08-30 17:07:57,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:57,190 INFO L388 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 [2021-08-30 17:07:57,609 INFO L388 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 14 treesize of output 13 [2021-08-30 17:07:57,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-08-30 17:07:57,749 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-30 17:07:57,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2021-08-30 17:07:57,757 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 17:07:57,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 35 [2021-08-30 17:07:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 98 proven. 13 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-08-30 17:07:58,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:07:58,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:07:58,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954094633] [2021-08-30 17:07:58,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:07:58,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008604700] [2021-08-30 17:07:58,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008604700] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 17:07:58,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:07:58,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-08-30 17:07:58,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934691774] [2021-08-30 17:07:58,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 17:07:58,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:07:58,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 17:07:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-30 17:07:58,801 INFO L87 Difference]: Start difference. First operand 270 states and 301 transitions. Second operand has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-08-30 17:08:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:00,862 INFO L93 Difference]: Finished difference Result 379 states and 440 transitions. [2021-08-30 17:08:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 17:08:00,863 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 123 [2021-08-30 17:08:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:00,865 INFO L225 Difference]: With dead ends: 379 [2021-08-30 17:08:00,865 INFO L226 Difference]: Without dead ends: 379 [2021-08-30 17:08:00,865 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1686.05ms TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-08-30 17:08:00,866 INFO L928 BasicCegarLoop]: 44 mSDtfsCounter, 124 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1227.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.34ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 853 IncrementalHoareTripleChecker+Unchecked, 1474.92ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:00,866 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 280 Invalid, 3494 Unknown, 0 Unchecked, 13.34ms Time], IncrementalHoareTripleChecker [34 Valid, 2607 Invalid, 0 Unknown, 853 Unchecked, 1474.92ms Time] [2021-08-30 17:08:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-08-30 17:08:00,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 269. [2021-08-30 17:08:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 144 states have (on average 1.7291666666666667) internal successors, (249), 229 states have internal predecessors, (249), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-08-30 17:08:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 300 transitions. [2021-08-30 17:08:00,875 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 300 transitions. Word has length 123 [2021-08-30 17:08:00,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:00,876 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 300 transitions. [2021-08-30 17:08:00,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-08-30 17:08:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 300 transitions. [2021-08-30 17:08:00,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-08-30 17:08:00,878 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:00,878 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:00,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:01,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:01,093 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr3REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:01,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:01,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1869047340, now seen corresponding path program 1 times [2021-08-30 17:08:01,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:08:01,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593433914] [2021-08-30 17:08:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:01,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:08:01,106 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:08:01,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309891744] [2021-08-30 17:08:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:01,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:01,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:08:01,110 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:08:01,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-30 17:08:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:01,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 79 conjunts are in the unsatisfiable core [2021-08-30 17:08:01,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:01,422 INFO L388 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 [2021-08-30 17:08:01,924 INFO L388 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 20 treesize of output 19 [2021-08-30 17:08:01,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-08-30 17:08:02,216 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-30 17:08:02,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2021-08-30 17:08:02,236 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-30 17:08:02,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 45 [2021-08-30 17:08:02,397 INFO L388 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 14 treesize of output 13 [2021-08-30 17:08:02,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-08-30 17:08:02,515 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-08-30 17:08:02,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 55 [2021-08-30 17:08:02,537 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-30 17:08:02,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2021-08-30 17:08:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 125 proven. 39 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-08-30 17:08:08,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:08,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:08:08,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593433914] [2021-08-30 17:08:08,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:08:08,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309891744] [2021-08-30 17:08:08,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309891744] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 17:08:08,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:08:08,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-08-30 17:08:08,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390169715] [2021-08-30 17:08:08,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 17:08:08,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:08:08,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 17:08:08,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=438, Unknown=2, NotChecked=0, Total=506 [2021-08-30 17:08:08,976 INFO L87 Difference]: Start difference. First operand 269 states and 300 transitions. Second operand has 21 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 9 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-08-30 17:08:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:10,730 INFO L93 Difference]: Finished difference Result 387 states and 452 transitions. [2021-08-30 17:08:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-30 17:08:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 9 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 125 [2021-08-30 17:08:10,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:10,733 INFO L225 Difference]: With dead ends: 387 [2021-08-30 17:08:10,733 INFO L226 Difference]: Without dead ends: 387 [2021-08-30 17:08:10,733 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 7323.61ms TimeCoverageRelationStatistics Valid=115, Invalid=813, Unknown=2, NotChecked=0, Total=930 [2021-08-30 17:08:10,734 INFO L928 BasicCegarLoop]: 45 mSDtfsCounter, 122 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 777.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 4198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.04ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2390 IncrementalHoareTripleChecker+Unchecked, 977.46ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:10,734 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 365 Invalid, 4198 Unknown, 0 Unchecked, 9.04ms Time], IncrementalHoareTripleChecker [34 Valid, 1774 Invalid, 0 Unknown, 2390 Unchecked, 977.46ms Time] [2021-08-30 17:08:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-08-30 17:08:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 277. [2021-08-30 17:08:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 149 states have (on average 1.7114093959731544) internal successors, (255), 234 states have internal predecessors, (255), 29 states have call successors, (29), 16 states have call predecessors, (29), 14 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-08-30 17:08:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 312 transitions. [2021-08-30 17:08:10,742 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 312 transitions. Word has length 125 [2021-08-30 17:08:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:10,742 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 312 transitions. [2021-08-30 17:08:10,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 9 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-08-30 17:08:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 312 transitions. [2021-08-30 17:08:10,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-08-30 17:08:10,743 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:10,744 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:10,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:10,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:10,958 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr2REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:10,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1869047339, now seen corresponding path program 1 times [2021-08-30 17:08:10,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:08:10,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922992426] [2021-08-30 17:08:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:10,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:08:10,969 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:08:10,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527387063] [2021-08-30 17:08:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:10,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:10,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:08:10,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:08:11,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-30 17:08:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:11,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-30 17:08:11,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:11,380 INFO L388 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 [2021-08-30 17:08:11,444 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:08:11,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-08-30 17:08:11,472 INFO L388 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 [2021-08-30 17:08:11,512 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:08:11,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-08-30 17:08:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 139 proven. 14 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-08-30 17:08:11,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:11,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:08:11,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922992426] [2021-08-30 17:08:11,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:08:11,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527387063] [2021-08-30 17:08:11,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527387063] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 17:08:11,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:08:11,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-08-30 17:08:11,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245905721] [2021-08-30 17:08:11,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 17:08:11,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:08:11,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 17:08:11,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:08:11,659 INFO L87 Difference]: Start difference. First operand 277 states and 312 transitions. Second operand has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-30 17:08:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:12,260 INFO L93 Difference]: Finished difference Result 395 states and 458 transitions. [2021-08-30 17:08:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 17:08:12,261 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 125 [2021-08-30 17:08:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:12,262 INFO L225 Difference]: With dead ends: 395 [2021-08-30 17:08:12,262 INFO L226 Difference]: Without dead ends: 395 [2021-08-30 17:08:12,263 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 111 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 235.05ms TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-08-30 17:08:12,263 INFO L928 BasicCegarLoop]: 46 mSDtfsCounter, 157 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 413.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.73ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 496.51ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:12,263 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 91 Invalid, 1247 Unknown, 0 Unchecked, 7.73ms Time], IncrementalHoareTripleChecker [37 Valid, 913 Invalid, 0 Unknown, 297 Unchecked, 496.51ms Time] [2021-08-30 17:08:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-08-30 17:08:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 282. [2021-08-30 17:08:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 153 states have (on average 1.7058823529411764) internal successors, (261), 239 states have internal predecessors, (261), 29 states have call successors, (29), 16 states have call predecessors, (29), 15 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-08-30 17:08:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 318 transitions. [2021-08-30 17:08:12,270 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 318 transitions. Word has length 125 [2021-08-30 17:08:12,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:12,271 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 318 transitions. [2021-08-30 17:08:12,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-08-30 17:08:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 318 transitions. [2021-08-30 17:08:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-08-30 17:08:12,272 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:12,272 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:12,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:12,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:12,485 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting l4_insertErr4REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:12,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:12,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2105893064, now seen corresponding path program 1 times [2021-08-30 17:08:12,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:08:12,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785822286] [2021-08-30 17:08:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:12,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:08:12,496 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:08:12,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072317132] [2021-08-30 17:08:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:12,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:12,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:08:12,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:08:12,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-30 17:08:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:12,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 17:08:12,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-08-30 17:08:12,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:08:12,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:08:12,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785822286] [2021-08-30 17:08:12,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:08:12,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072317132] [2021-08-30 17:08:12,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072317132] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:08:12,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:08:12,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 17:08:12,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336655317] [2021-08-30 17:08:12,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:08:12,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:08:12,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:08:12,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:08:12,842 INFO L87 Difference]: Start difference. First operand 282 states and 318 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-08-30 17:08:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:13,059 INFO L93 Difference]: Finished difference Result 281 states and 316 transitions. [2021-08-30 17:08:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:08:13,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 126 [2021-08-30 17:08:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:13,061 INFO L225 Difference]: With dead ends: 281 [2021-08-30 17:08:13,061 INFO L226 Difference]: Without dead ends: 281 [2021-08-30 17:08:13,061 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:08:13,062 INFO L928 BasicCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.77ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:13,062 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 101 Invalid, 485 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [0 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 207.77ms Time] [2021-08-30 17:08:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-08-30 17:08:13,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-08-30 17:08:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 153 states have (on average 1.6928104575163399) internal successors, (259), 238 states have internal predecessors, (259), 29 states have call successors, (29), 16 states have call predecessors, (29), 15 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-08-30 17:08:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 316 transitions. [2021-08-30 17:08:13,071 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 316 transitions. Word has length 126 [2021-08-30 17:08:13,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:13,071 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 316 transitions. [2021-08-30 17:08:13,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-08-30 17:08:13,071 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 316 transitions. [2021-08-30 17:08:13,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-08-30 17:08:13,072 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:13,072 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:13,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:13,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:13,277 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting l4_insertErr5REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:13,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2105893065, now seen corresponding path program 1 times [2021-08-30 17:08:13,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:08:13,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967938630] [2021-08-30 17:08:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:13,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:08:13,287 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:08:13,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636338782] [2021-08-30 17:08:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:13,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:13,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:08:13,291 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:08:13,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-30 17:08:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:13,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 17:08:13,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-08-30 17:08:13,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:13,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-08-30 17:08:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-08-30 17:08:13,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:08:13,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967938630] [2021-08-30 17:08:13,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:08:13,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636338782] [2021-08-30 17:08:13,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636338782] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:08:13,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:08:13,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-08-30 17:08:13,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49063623] [2021-08-30 17:08:13,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 17:08:13,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:08:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 17:08:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:08:13,999 INFO L87 Difference]: Start difference. First operand 281 states and 316 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-08-30 17:08:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:14,739 INFO L93 Difference]: Finished difference Result 280 states and 314 transitions. [2021-08-30 17:08:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:08:14,739 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 126 [2021-08-30 17:08:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:14,741 INFO L225 Difference]: With dead ends: 280 [2021-08-30 17:08:14,741 INFO L226 Difference]: Without dead ends: 280 [2021-08-30 17:08:14,741 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 53.32ms TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-08-30 17:08:14,741 INFO L928 BasicCegarLoop]: 51 mSDtfsCounter, 23 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 568.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 709.44ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:14,742 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 453 Invalid, 2192 Unknown, 0 Unchecked, 6.23ms Time], IncrementalHoareTripleChecker [0 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 709.44ms Time] [2021-08-30 17:08:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-08-30 17:08:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-08-30 17:08:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 153 states have (on average 1.6797385620915033) internal successors, (257), 237 states have internal predecessors, (257), 29 states have call successors, (29), 16 states have call predecessors, (29), 15 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-08-30 17:08:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 314 transitions. [2021-08-30 17:08:14,747 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 314 transitions. Word has length 126 [2021-08-30 17:08:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:14,747 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 314 transitions. [2021-08-30 17:08:14,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-08-30 17:08:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 314 transitions. [2021-08-30 17:08:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-08-30 17:08:14,749 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:14,749 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:14,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:14,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-30 17:08:14,961 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting l4_insertErr7REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:14,961 INFO L82 PathProgramCache]: Analyzing trace with hash 833651082, now seen corresponding path program 1 times [2021-08-30 17:08:14,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:08:14,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216007577] [2021-08-30 17:08:14,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:14,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:08:14,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:08:14,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914193748] [2021-08-30 17:08:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:14,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:14,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:08:14,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:08:15,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-30 17:08:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:15,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 17:08:15,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-08-30 17:08:15,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:08:15,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:08:15,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216007577] [2021-08-30 17:08:15,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:08:15,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914193748] [2021-08-30 17:08:15,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914193748] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:08:15,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:08:15,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 17:08:15,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750101412] [2021-08-30 17:08:15,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:08:15,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:08:15,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:08:15,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:08:15,314 INFO L87 Difference]: Start difference. First operand 280 states and 314 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-08-30 17:08:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:15,568 INFO L93 Difference]: Finished difference Result 279 states and 312 transitions. [2021-08-30 17:08:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:08:15,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 128 [2021-08-30 17:08:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:15,569 INFO L225 Difference]: With dead ends: 279 [2021-08-30 17:08:15,569 INFO L226 Difference]: Without dead ends: 279 [2021-08-30 17:08:15,569 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:08:15,570 INFO L928 BasicCegarLoop]: 51 mSDtfsCounter, 3 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.39ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:15,570 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 101 Invalid, 487 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [0 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 245.39ms Time] [2021-08-30 17:08:15,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-08-30 17:08:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-08-30 17:08:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 153 states have (on average 1.6666666666666667) internal successors, (255), 236 states have internal predecessors, (255), 29 states have call successors, (29), 16 states have call predecessors, (29), 15 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-08-30 17:08:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 312 transitions. [2021-08-30 17:08:15,575 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 312 transitions. Word has length 128 [2021-08-30 17:08:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:15,575 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 312 transitions. [2021-08-30 17:08:15,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-08-30 17:08:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 312 transitions. [2021-08-30 17:08:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-08-30 17:08:15,576 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:15,576 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:15,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:15,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-30 17:08:15,794 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting l3_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:15,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:15,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2123407571, now seen corresponding path program 1 times [2021-08-30 17:08:15,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:08:15,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838176144] [2021-08-30 17:08:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:15,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:08:15,806 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:08:15,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304482078] [2021-08-30 17:08:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:15,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:08:15,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:08:15,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-30 17:08:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:15,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 52 conjunts are in the unsatisfiable core [2021-08-30 17:08:15,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:16,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-08-30 17:08:16,241 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-30 17:08:16,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-30 17:08:16,302 INFO L388 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 [2021-08-30 17:08:16,390 INFO L388 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 [2021-08-30 17:08:16,498 INFO L354 Elim1Store]: treesize reduction 82, result has 16.3 percent of original size [2021-08-30 17:08:16,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 31 [2021-08-30 17:08:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 141 proven. 41 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-08-30 17:08:16,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:16,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:08:16,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838176144] [2021-08-30 17:08:16,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:08:16,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304482078] [2021-08-30 17:08:16,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304482078] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 17:08:16,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:08:16,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-08-30 17:08:16,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426731673] [2021-08-30 17:08:16,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-30 17:08:16,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:08:16,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-30 17:08:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:08:16,751 INFO L87 Difference]: Start difference. First operand 279 states and 312 transitions. Second operand has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2021-08-30 17:08:17,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:17,375 INFO L93 Difference]: Finished difference Result 397 states and 465 transitions. [2021-08-30 17:08:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-30 17:08:17,376 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 133 [2021-08-30 17:08:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:17,377 INFO L225 Difference]: With dead ends: 397 [2021-08-30 17:08:17,377 INFO L226 Difference]: Without dead ends: 397 [2021-08-30 17:08:17,378 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 119 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 311.25ms TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-08-30 17:08:17,378 INFO L928 BasicCegarLoop]: 45 mSDtfsCounter, 132 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 414.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.61ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 804 IncrementalHoareTripleChecker+Unchecked, 525.36ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:17,378 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 165 Invalid, 2100 Unknown, 0 Unchecked, 4.61ms Time], IncrementalHoareTripleChecker [35 Valid, 1261 Invalid, 0 Unknown, 804 Unchecked, 525.36ms Time] [2021-08-30 17:08:17,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-08-30 17:08:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 287. [2021-08-30 17:08:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 158 states have (on average 1.6582278481012658) internal successors, (262), 241 states have internal predecessors, (262), 32 states have call successors, (32), 17 states have call predecessors, (32), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-08-30 17:08:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 325 transitions. [2021-08-30 17:08:17,386 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 325 transitions. Word has length 133 [2021-08-30 17:08:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:17,387 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 325 transitions. [2021-08-30 17:08:17,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2021-08-30 17:08:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 325 transitions. [2021-08-30 17:08:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-08-30 17:08:17,389 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:17,389 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:17,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:17,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-30 17:08:17,593 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting l3_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:17,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2123407572, now seen corresponding path program 1 times [2021-08-30 17:08:17,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:08:17,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766619060] [2021-08-30 17:08:17,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:17,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:08:17,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:08:17,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801674165] [2021-08-30 17:08:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:17,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:17,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:08:17,602 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:08:17,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-30 17:08:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:17,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-30 17:08:17,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:17,868 INFO L388 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 [2021-08-30 17:08:22,140 INFO L388 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 20 treesize of output 19 [2021-08-30 17:08:22,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-08-30 17:08:22,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:08:22,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766619060] [2021-08-30 17:08:22,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:08:22,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801674165] [2021-08-30 17:08:22,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:08:22,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:08:22,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:08:22,416 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-08-30 17:08:22,416 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:08:22,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr1REQUIRES_VIOLATION (88 of 89 remaining) [2021-08-30 17:08:22,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr0REQUIRES_VIOLATION (87 of 89 remaining) [2021-08-30 17:08:22,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr1REQUIRES_VIOLATION (86 of 89 remaining) [2021-08-30 17:08:22,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr2REQUIRES_VIOLATION (85 of 89 remaining) [2021-08-30 17:08:22,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr3REQUIRES_VIOLATION (84 of 89 remaining) [2021-08-30 17:08:22,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (83 of 89 remaining) [2021-08-30 17:08:22,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (82 of 89 remaining) [2021-08-30 17:08:22,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (81 of 89 remaining) [2021-08-30 17:08:22,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr0REQUIRES_VIOLATION (80 of 89 remaining) [2021-08-30 17:08:22,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr2REQUIRES_VIOLATION (79 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr3REQUIRES_VIOLATION (78 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr4REQUIRES_VIOLATION (77 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr5REQUIRES_VIOLATION (76 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION (75 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION (74 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION (73 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION (72 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION (71 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION (70 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr0REQUIRES_VIOLATION (69 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr1REQUIRES_VIOLATION (68 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (67 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (66 of 89 remaining) [2021-08-30 17:08:22,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (65 of 89 remaining) [2021-08-30 17:08:22,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr5REQUIRES_VIOLATION (64 of 89 remaining) [2021-08-30 17:08:22,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr6REQUIRES_VIOLATION (63 of 89 remaining) [2021-08-30 17:08:22,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr7ASSERT_VIOLATIONMEMORY_FREE (62 of 89 remaining) [2021-08-30 17:08:22,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr8ASSERT_VIOLATIONMEMORY_FREE (61 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr9ASSERT_VIOLATIONMEMORY_FREE (60 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION (59 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION (58 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION (57 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION (56 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION (55 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION (54 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION (53 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION (52 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr0REQUIRES_VIOLATION (51 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr1REQUIRES_VIOLATION (50 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr2REQUIRES_VIOLATION (49 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr3REQUIRES_VIOLATION (48 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (47 of 89 remaining) [2021-08-30 17:08:22,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (46 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (45 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (44 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (43 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (42 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (41 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (40 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (39 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (38 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (37 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (36 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (35 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (34 of 89 remaining) [2021-08-30 17:08:22,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (33 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (32 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (31 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (30 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (29 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16ENSURES_VIOLATIONMEMORY_LEAK (28 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION (27 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION (26 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION (25 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION (24 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (23 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (22 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (21 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATION (20 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATION (19 of 89 remaining) [2021-08-30 17:08:22,426 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATION (18 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATION (17 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (16 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (15 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (14 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr0REQUIRES_VIOLATION (13 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr1REQUIRES_VIOLATION (12 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr2REQUIRES_VIOLATION (11 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr3REQUIRES_VIOLATION (10 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr4REQUIRES_VIOLATION (9 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr5REQUIRES_VIOLATION (8 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr0REQUIRES_VIOLATION (7 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr1REQUIRES_VIOLATION (6 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr2REQUIRES_VIOLATION (5 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr3REQUIRES_VIOLATION (4 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr4REQUIRES_VIOLATION (3 of 89 remaining) [2021-08-30 17:08:22,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr5REQUIRES_VIOLATION (2 of 89 remaining) [2021-08-30 17:08:22,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr6REQUIRES_VIOLATION (1 of 89 remaining) [2021-08-30 17:08:22,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr7REQUIRES_VIOLATION (0 of 89 remaining) [2021-08-30 17:08:22,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:22,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-30 17:08:22,650 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:08:22,654 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:08:22,654 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:08:22,654 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:08:22,654 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:08:22,654 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:08:22,654 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:08:22,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:08:22 BoogieIcfgContainer [2021-08-30 17:08:22,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:08:22,668 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:08:22,668 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:08:22,668 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:08:22,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:07:52" (3/4) ... [2021-08-30 17:08:22,670 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:08:22,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:08:22,671 INFO L158 Benchmark]: Toolchain (without parser) took 31504.36ms. Allocated memory was 56.6MB in the beginning and 100.7MB in the end (delta: 44.0MB). Free memory was 34.2MB in the beginning and 44.0MB in the end (delta: -9.8MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2021-08-30 17:08:22,671 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:08:22,671 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.30ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.0MB in the beginning and 42.7MB in the end (delta: -8.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:08:22,671 INFO L158 Benchmark]: Boogie Preprocessor took 67.40ms. Allocated memory is still 69.2MB. Free memory was 42.5MB in the beginning and 38.6MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 17:08:22,672 INFO L158 Benchmark]: RCFGBuilder took 528.19ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 36.2MB in the end (delta: 2.4MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-08-30 17:08:22,672 INFO L158 Benchmark]: TraceAbstraction took 30526.70ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 35.9MB in the beginning and 44.0MB in the end (delta: -8.1MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2021-08-30 17:08:22,672 INFO L158 Benchmark]: Witness Printer took 2.29ms. Allocated memory is still 100.7MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:08:22,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.30ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.0MB in the beginning and 42.7MB in the end (delta: -8.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.40ms. Allocated memory is still 69.2MB. Free memory was 42.5MB in the beginning and 38.6MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 528.19ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 36.2MB in the end (delta: 2.4MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * TraceAbstraction took 30526.70ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 35.9MB in the beginning and 44.0MB in the end (delta: -8.1MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * Witness Printer took 2.29ms. Allocated memory is still 100.7MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L777] static struct L0 *list; [L779] CALL l0_insert(&list) [L708] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L708] RET, EXPR zalloc_or_die(sizeof *item) [L708] struct L0 *item = zalloc_or_die(sizeof *item); [L710] CALL l1_insert(&item->down) [L699] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L699] RET, EXPR zalloc_or_die(sizeof *item) [L699] struct L1 *item = zalloc_or_die(sizeof *item); [L701] CALL l2_insert(&item->down) [L690] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L690] RET, EXPR zalloc_or_die(sizeof *item) [L690] struct L2 *item = zalloc_or_die(sizeof *item); [L692] CALL l3_insert(&item->down) [L681] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L681] RET, EXPR zalloc_or_die(sizeof *item) [L681] struct L3 *item = zalloc_or_die(sizeof *item); [L683] CALL l4_insert(&item->down) [L674] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L674] RET, EXPR zalloc_or_die(sizeof *item) [L674] struct L4 *item = zalloc_or_die(sizeof *item); [L675] CALL, EXPR zalloc_or_die(119U) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L675] RET, EXPR zalloc_or_die(119U) [L675] item->down = zalloc_or_die(119U) [L676] EXPR \read(**list) [L676] item->next = *list [L677] *list = item [L683] RET l4_insert(&item->down) [L684] COND FALSE !(__VERIFIER_nondet_int()) [L685] \read(**list) - UnprovableResult [Line: 731]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 756]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 756]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 294 locations, 89 error locations. Started 1 CEGAR loops. OverallTime: 30465.56ms, OverallIterations: 12, TraceHistogramMax: 6, EmptinessCheckTime: 34.71ms, AutomataDifference: 8506.88ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 14.40ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 844 SdHoareTripleChecker+Valid, 6571.31ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 842 mSDsluCounter, 2056 SdHoareTripleChecker+Invalid, 5273.22ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4760 IncrementalHoareTripleChecker+Unchecked, 8812 mSDsCounter, 217 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13402 IncrementalHoareTripleChecker+Invalid, 18379 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 217 mSolverCounterUnsat, 525 mSDtfsCounter, 13402 mSolverCounterSat, 73.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1237 GetRequests, 1066 SyntacticMatches, 29 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 9868.44ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=287occurred in iteration=11, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 133.88ms AutomataMinimizationTime, 11 MinimizatonAttempts, 663 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 255.59ms SsaConstructionTime, 579.98ms SatisfiabilityAnalysisTime, 12463.06ms InterpolantComputationTime, 1040 NumberOfCodeBlocks, 1040 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1154 ConstructedInterpolants, 108 QuantifiedInterpolants, 3596 SizeOfPredicates, 50 NumberOfNonLiveVariables, 6381 ConjunctsInSsa, 280 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 2030/2160 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 could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:08:22,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:08:24,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:08:24,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:08:24,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:08:24,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:08:24,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:08:24,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:08:24,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:08:24,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:08:24,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:08:24,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:08:24,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:08:24,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:08:24,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:08:24,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:08:24,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:08:24,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:08:24,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:08:24,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:08:24,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:08:24,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:08:24,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:08:24,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:08:24,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:08:24,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:08:24,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:08:24,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:08:24,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:08:24,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:08:24,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:08:24,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:08:24,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:08:24,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:08:24,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:08:24,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:08:24,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:08:24,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:08:24,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:08:24,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:08:24,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:08:24,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:08:24,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:08:24,295 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:08:24,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:08:24,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:08:24,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:08:24,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:08:24,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:08:24,297 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:08:24,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:08:24,297 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:08:24,297 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:08:24,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:08:24,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:08:24,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:08:24,298 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:08:24,298 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:08:24,298 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:08:24,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:08:24,298 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:08:24,298 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:08:24,299 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:08:24,299 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:08:24,299 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:08:24,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:08:24,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:08:24,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:08:24,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:08:24,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:08:24,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:08:24,300 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:08:24,300 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:08:24,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:08:24,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:08:24,300 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3800c354b942cbeb9da811279120cfec18cb92a7 [2021-08-30 17:08:24,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:08:24,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:08:24,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:08:24,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:08:24,533 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:08:24,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-3.i [2021-08-30 17:08:24,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fe15793/cd8157693d654459940ea331746fe052/FLAG6d0b05ab2 [2021-08-30 17:08:25,000 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:08:25,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i [2021-08-30 17:08:25,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fe15793/cd8157693d654459940ea331746fe052/FLAG6d0b05ab2 [2021-08-30 17:08:25,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fe15793/cd8157693d654459940ea331746fe052 [2021-08-30 17:08:25,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:08:25,021 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:08:25,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:08:25,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:08:25,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:08:25,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db9dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25, skipping insertion in model container [2021-08-30 17:08:25,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:08:25,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:08:25,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:08:25,315 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:08:25,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:08:25,365 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:08:25,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25 WrapperNode [2021-08-30 17:08:25,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:08:25,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:08:25,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:08:25,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:08:25,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:08:25,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:08:25,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:08:25,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:08:25,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25" (1/1) ... [2021-08-30 17:08:25,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:08:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:08:25,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:08:25,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:08:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:08:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:08:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:08:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:08:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:08:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:08:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:08:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:08:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:08:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-30 17:08:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-08-30 17:08:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-08-30 17:08:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-08-30 17:08:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-30 17:08:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-30 17:08:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-08-30 17:08:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-08-30 17:08:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-08-30 17:08:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-30 17:08:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-08-30 17:08:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-08-30 17:08:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:08:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:08:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:08:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:08:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:08:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:08:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:08:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:08:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:08:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:08:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:08:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:08:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:08:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:08:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:08:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:08:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:08:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:08:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:08:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:08:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:08:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:08:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:08:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:08:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:08:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:08:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:08:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:08:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:08:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:08:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:08:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:08:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:08:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:08:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:08:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-30 17:08:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-30 17:08:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:08:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-30 17:08:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-30 17:08:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-30 17:08:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-30 17:08:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-30 17:08:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-30 17:08:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-30 17:08:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-30 17:08:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-30 17:08:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-30 17:08:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-30 17:08:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-30 17:08:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-30 17:08:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-30 17:08:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-30 17:08:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-30 17:08:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-30 17:08:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-30 17:08:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-30 17:08:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-30 17:08:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-30 17:08:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-30 17:08:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-30 17:08:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-30 17:08:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-30 17:08:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-30 17:08:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-30 17:08:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-30 17:08:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-30 17:08:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-30 17:08:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-30 17:08:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-30 17:08:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-30 17:08:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-30 17:08:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-30 17:08:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-30 17:08:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-30 17:08:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-30 17:08:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-30 17:08:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-30 17:08:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-30 17:08:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-30 17:08:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-30 17:08:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-30 17:08:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-30 17:08:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-30 17:08:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-30 17:08:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-30 17:08:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:08:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:08:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:08:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-08-30 17:08:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-08-30 17:08:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:08:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:08:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-08-30 17:08:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-30 17:08:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-30 17:08:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-08-30 17:08:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-08-30 17:08:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:08:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-08-30 17:08:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-30 17:08:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-08-30 17:08:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-08-30 17:08:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:08:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:08:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 17:08:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:08:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:08:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:08:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 17:08:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 17:08:25,909 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:08:25,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:08:25,998 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-30 17:08:26,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:08:25 BoogieIcfgContainer [2021-08-30 17:08:26,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:08:26,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:08:26,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:08:26,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:08:26,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:08:25" (1/3) ... [2021-08-30 17:08:26,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b668a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:08:26, skipping insertion in model container [2021-08-30 17:08:26,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:08:25" (2/3) ... [2021-08-30 17:08:26,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b668a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:08:26, skipping insertion in model container [2021-08-30 17:08:26,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:08:25" (3/3) ... [2021-08-30 17:08:26,006 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0235-3.i [2021-08-30 17:08:26,009 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:08:26,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 89 error locations. [2021-08-30 17:08:26,035 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:08:26,039 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:08:26,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2021-08-30 17:08:26,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 146 states have (on average 1.7876712328767124) internal successors, (261), 230 states have internal predecessors, (261), 26 states have call successors, (26), 15 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-08-30 17:08:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:08:26,064 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:26,064 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:26,064 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:26,067 INFO L82 PathProgramCache]: Analyzing trace with hash 409335201, now seen corresponding path program 1 times [2021-08-30 17:08:26,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:26,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181722446] [2021-08-30 17:08:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:26,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:26,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:26,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:26,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:08:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:26,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-30 17:08:26,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:08:26,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:08:26,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:26,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181722446] [2021-08-30 17:08:26,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181722446] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:08:26,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:08:26,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:08:26,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213575721] [2021-08-30 17:08:26,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-30 17:08:26,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:08:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-30 17:08:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-30 17:08:26,355 INFO L87 Difference]: Start difference. First operand has 271 states, 146 states have (on average 1.7876712328767124) internal successors, (261), 230 states have internal predecessors, (261), 26 states have call successors, (26), 15 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:08:26,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:26,787 INFO L93 Difference]: Finished difference Result 271 states and 302 transitions. [2021-08-30 17:08:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-30 17:08:26,791 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:08:26,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:26,800 INFO L225 Difference]: With dead ends: 271 [2021-08-30 17:08:26,801 INFO L226 Difference]: Without dead ends: 268 [2021-08-30 17:08:26,802 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-30 17:08:26,806 INFO L928 BasicCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 307.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 399.96ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:26,807 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 250 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 399.96ms Time] [2021-08-30 17:08:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-08-30 17:08:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2021-08-30 17:08:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 140 states have (on average 1.7714285714285714) internal successors, (248), 228 states have internal predecessors, (248), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-08-30 17:08:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 299 transitions. [2021-08-30 17:08:26,868 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 299 transitions. Word has length 7 [2021-08-30 17:08:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:26,868 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 299 transitions. [2021-08-30 17:08:26,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:08:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 299 transitions. [2021-08-30 17:08:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 17:08:26,869 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:26,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:26,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:27,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:08:27,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:27,077 INFO L82 PathProgramCache]: Analyzing trace with hash 441002831, now seen corresponding path program 1 times [2021-08-30 17:08:27,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:27,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537914548] [2021-08-30 17:08:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:27,078 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:27,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:27,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:27,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:08:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:27,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:08:27,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:27,297 INFO L388 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 [2021-08-30 17:08:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:08:27,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:08:27,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:27,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537914548] [2021-08-30 17:08:27,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537914548] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:08:27,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:08:27,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:08:27,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614970772] [2021-08-30 17:08:27,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:08:27,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:08:27,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:08:27,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:08:27,338 INFO L87 Difference]: Start difference. First operand 268 states and 299 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:08:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:27,892 INFO L93 Difference]: Finished difference Result 267 states and 298 transitions. [2021-08-30 17:08:27,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:08:27,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 17:08:27,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:27,893 INFO L225 Difference]: With dead ends: 267 [2021-08-30 17:08:27,893 INFO L226 Difference]: Without dead ends: 267 [2021-08-30 17:08:27,894 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:08:27,894 INFO L928 BasicCegarLoop]: 51 mSDtfsCounter, 3 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 426.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 531.82ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:27,895 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 492 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 531.82ms Time] [2021-08-30 17:08:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-08-30 17:08:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-08-30 17:08:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 140 states have (on average 1.7642857142857142) internal successors, (247), 227 states have internal predecessors, (247), 26 states have call successors, (26), 15 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-08-30 17:08:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 298 transitions. [2021-08-30 17:08:27,901 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 298 transitions. Word has length 12 [2021-08-30 17:08:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:27,901 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 298 transitions. [2021-08-30 17:08:27,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:08:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 298 transitions. [2021-08-30 17:08:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 17:08:27,904 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:27,904 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:27,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:28,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:08:28,111 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:28,112 INFO L82 PathProgramCache]: Analyzing trace with hash 441002832, now seen corresponding path program 1 times [2021-08-30 17:08:28,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:28,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164153158] [2021-08-30 17:08:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:28,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:28,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:28,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:28,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:08:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:28,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 17:08:28,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:28,325 INFO L388 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 [2021-08-30 17:08:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:08:28,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:08:28,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:28,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164153158] [2021-08-30 17:08:28,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164153158] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:08:28,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:08:28,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 2] imperfect sequences [] total 6 [2021-08-30 17:08:28,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930944441] [2021-08-30 17:08:28,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:08:28,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:08:28,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:08:28,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:08:28,594 INFO L87 Difference]: Start difference. First operand 267 states and 298 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:08:32,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:32,181 INFO L93 Difference]: Finished difference Result 277 states and 308 transitions. [2021-08-30 17:08:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:08:32,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 17:08:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:32,183 INFO L225 Difference]: With dead ends: 277 [2021-08-30 17:08:32,183 INFO L226 Difference]: Without dead ends: 277 [2021-08-30 17:08:32,183 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 236.55ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:08:32,184 INFO L928 BasicCegarLoop]: 47 mSDtfsCounter, 16 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3060.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.04ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3509.33ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:32,184 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 223 Invalid, 1272 Unknown, 0 Unchecked, 8.04ms Time], IncrementalHoareTripleChecker [9 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 3509.33ms Time] [2021-08-30 17:08:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-08-30 17:08:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-08-30 17:08:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 146 states have (on average 1.7328767123287672) internal successors, (253), 233 states have internal predecessors, (253), 28 states have call successors, (28), 17 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-08-30 17:08:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 308 transitions. [2021-08-30 17:08:32,191 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 308 transitions. Word has length 12 [2021-08-30 17:08:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:32,191 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 308 transitions. [2021-08-30 17:08:32,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:08:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 308 transitions. [2021-08-30 17:08:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-30 17:08:32,194 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:32,194 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:32,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-30 17:08:32,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:08:32,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:32,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2053185453, now seen corresponding path program 1 times [2021-08-30 17:08:32,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:32,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336043602] [2021-08-30 17:08:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:32,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:32,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:32,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:32,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:08:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:32,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 17:08:32,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-08-30 17:08:33,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-08-30 17:08:34,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:34,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336043602] [2021-08-30 17:08:34,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336043602] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-30 17:08:34,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:08:34,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-08-30 17:08:34,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636606168] [2021-08-30 17:08:34,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 17:08:34,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:08:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 17:08:34,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-30 17:08:34,391 INFO L87 Difference]: Start difference. First operand 277 states and 308 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-30 17:08:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:37,820 INFO L93 Difference]: Finished difference Result 294 states and 325 transitions. [2021-08-30 17:08:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:08:37,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 123 [2021-08-30 17:08:37,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:37,821 INFO L225 Difference]: With dead ends: 294 [2021-08-30 17:08:37,821 INFO L226 Difference]: Without dead ends: 278 [2021-08-30 17:08:37,822 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 591.63ms TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-08-30 17:08:37,822 INFO L928 BasicCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2819.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.29ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3257.39ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:37,822 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 286 Invalid, 1788 Unknown, 0 Unchecked, 9.29ms Time], IncrementalHoareTripleChecker [5 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 3257.39ms Time] [2021-08-30 17:08:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-08-30 17:08:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-08-30 17:08:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 147 states have (on average 1.727891156462585) internal successors, (254), 234 states have internal predecessors, (254), 28 states have call successors, (28), 17 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-08-30 17:08:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 309 transitions. [2021-08-30 17:08:37,828 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 309 transitions. Word has length 123 [2021-08-30 17:08:37,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:37,828 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 309 transitions. [2021-08-30 17:08:37,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-30 17:08:37,828 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 309 transitions. [2021-08-30 17:08:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-08-30 17:08:37,841 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:37,841 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:37,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:38,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:08:38,051 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:38,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:38,052 INFO L82 PathProgramCache]: Analyzing trace with hash -990331517, now seen corresponding path program 1 times [2021-08-30 17:08:38,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:38,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808404876] [2021-08-30 17:08:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:38,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:38,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:38,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:38,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:08:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:38,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 17:08:38,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-08-30 17:08:38,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-08-30 17:08:40,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:40,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808404876] [2021-08-30 17:08:40,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808404876] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:08:40,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:08:40,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-30 17:08:40,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504691254] [2021-08-30 17:08:40,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 17:08:40,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:08:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 17:08:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:08:40,015 INFO L87 Difference]: Start difference. First operand 278 states and 309 transitions. Second operand has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-08-30 17:08:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:45,909 INFO L93 Difference]: Finished difference Result 295 states and 326 transitions. [2021-08-30 17:08:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 17:08:45,909 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 129 [2021-08-30 17:08:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:45,912 INFO L225 Difference]: With dead ends: 295 [2021-08-30 17:08:45,912 INFO L226 Difference]: Without dead ends: 279 [2021-08-30 17:08:45,912 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 714.90ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:08:45,912 INFO L928 BasicCegarLoop]: 44 mSDtfsCounter, 18 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4935.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.11ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5682.33ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:45,913 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 372 Invalid, 2343 Unknown, 0 Unchecked, 15.11ms Time], IncrementalHoareTripleChecker [14 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 5682.33ms Time] [2021-08-30 17:08:45,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-08-30 17:08:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-08-30 17:08:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 148 states have (on average 1.722972972972973) internal successors, (255), 235 states have internal predecessors, (255), 28 states have call successors, (28), 17 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-08-30 17:08:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 310 transitions. [2021-08-30 17:08:45,924 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 310 transitions. Word has length 129 [2021-08-30 17:08:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:45,924 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 310 transitions. [2021-08-30 17:08:45,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-08-30 17:08:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 310 transitions. [2021-08-30 17:08:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-08-30 17:08:45,926 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:45,926 INFO L513 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:45,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-30 17:08:46,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:08:46,129 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:46,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:46,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2065245037, now seen corresponding path program 2 times [2021-08-30 17:08:46,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:46,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805477167] [2021-08-30 17:08:46,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:08:46,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:46,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:46,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:46,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:08:46,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 17:08:46,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:08:46,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:08:46,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-08-30 17:08:46,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-08-30 17:08:48,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:48,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805477167] [2021-08-30 17:08:48,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805477167] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:08:48,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:08:48,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-30 17:08:48,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808483535] [2021-08-30 17:08:48,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-30 17:08:48,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:08:48,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-30 17:08:48,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:08:48,155 INFO L87 Difference]: Start difference. First operand 279 states and 310 transitions. Second operand has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-08-30 17:08:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:52,629 INFO L93 Difference]: Finished difference Result 296 states and 327 transitions. [2021-08-30 17:08:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:08:52,630 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 135 [2021-08-30 17:08:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:52,631 INFO L225 Difference]: With dead ends: 296 [2021-08-30 17:08:52,631 INFO L226 Difference]: Without dead ends: 280 [2021-08-30 17:08:52,631 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 877.49ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:08:52,632 INFO L928 BasicCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3579.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.37ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4186.90ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:52,632 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 500 Invalid, 3116 Unknown, 0 Unchecked, 10.37ms Time], IncrementalHoareTripleChecker [13 Valid, 3103 Invalid, 0 Unknown, 0 Unchecked, 4186.90ms Time] [2021-08-30 17:08:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-08-30 17:08:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-08-30 17:08:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 236 states have internal predecessors, (256), 28 states have call successors, (28), 17 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-08-30 17:08:52,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 311 transitions. [2021-08-30 17:08:52,637 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 311 transitions. Word has length 135 [2021-08-30 17:08:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:52,638 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 311 transitions. [2021-08-30 17:08:52,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-08-30 17:08:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 311 transitions. [2021-08-30 17:08:52,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-08-30 17:08:52,639 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:52,639 INFO L513 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:08:52,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-08-30 17:08:52,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:08:52,850 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 85 more)] === [2021-08-30 17:08:52,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:52,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1362306877, now seen corresponding path program 3 times [2021-08-30 17:08:52,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:52,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506815050] [2021-08-30 17:08:52,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 17:08:52,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:52,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:52,858 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:52,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:08:53,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 17:08:53,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:08:53,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:08:53,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:53,253 INFO L388 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 [2021-08-30 17:08:53,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-08-30 17:08:53,566 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 17:08:53,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-08-30 17:08:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 239 proven. 8 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-08-30 17:08:53,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:09:06,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:09:06,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506815050] [2021-08-30 17:09:06,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:09:06,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [568375101] [2021-08-30 17:09:06,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 17:09:06,023 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:09:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:09:06,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:09:06,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-08-30 17:09:06,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 17:09:06,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:09:06,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-30 17:09:06,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:09:06,422 INFO L388 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 [2021-08-30 17:09:08,548 INFO L388 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 [2021-08-30 17:09:12,746 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:09:12,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-08-30 17:09:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 259 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-08-30 17:09:12,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:09:21,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:09:21,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885117683] [2021-08-30 17:09:21,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 17:09:21,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:09:21,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:09:21,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:09:21,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-30 17:09:21,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 17:09:21,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:09:21,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:09:21,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:09:21,318 INFO L388 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 [2021-08-30 17:09:21,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-08-30 17:09:21,559 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 17:09:21,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-08-30 17:09:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 239 proven. 8 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-08-30 17:09:21,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:09:34,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:09:34,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:09:34,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:09:34,630 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:09:34,630 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:09:34,633 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr0REQUIRES_VIOLATION (88 of 89 remaining) [2021-08-30 17:09:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr0REQUIRES_VIOLATION (87 of 89 remaining) [2021-08-30 17:09:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr1REQUIRES_VIOLATION (86 of 89 remaining) [2021-08-30 17:09:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr2REQUIRES_VIOLATION (85 of 89 remaining) [2021-08-30 17:09:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr3REQUIRES_VIOLATION (84 of 89 remaining) [2021-08-30 17:09:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (83 of 89 remaining) [2021-08-30 17:09:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (82 of 89 remaining) [2021-08-30 17:09:34,635 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (81 of 89 remaining) [2021-08-30 17:09:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr0REQUIRES_VIOLATION (80 of 89 remaining) [2021-08-30 17:09:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr1REQUIRES_VIOLATION (79 of 89 remaining) [2021-08-30 17:09:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr2REQUIRES_VIOLATION (78 of 89 remaining) [2021-08-30 17:09:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr3REQUIRES_VIOLATION (77 of 89 remaining) [2021-08-30 17:09:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr4REQUIRES_VIOLATION (76 of 89 remaining) [2021-08-30 17:09:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr5REQUIRES_VIOLATION (75 of 89 remaining) [2021-08-30 17:09:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION (74 of 89 remaining) [2021-08-30 17:09:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION (73 of 89 remaining) [2021-08-30 17:09:34,636 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION (72 of 89 remaining) [2021-08-30 17:09:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION (71 of 89 remaining) [2021-08-30 17:09:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION (70 of 89 remaining) [2021-08-30 17:09:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION (69 of 89 remaining) [2021-08-30 17:09:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr0REQUIRES_VIOLATION (68 of 89 remaining) [2021-08-30 17:09:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr1REQUIRES_VIOLATION (67 of 89 remaining) [2021-08-30 17:09:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (66 of 89 remaining) [2021-08-30 17:09:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (65 of 89 remaining) [2021-08-30 17:09:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (64 of 89 remaining) [2021-08-30 17:09:34,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr5REQUIRES_VIOLATION (63 of 89 remaining) [2021-08-30 17:09:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr6REQUIRES_VIOLATION (62 of 89 remaining) [2021-08-30 17:09:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr7ASSERT_VIOLATIONMEMORY_FREE (61 of 89 remaining) [2021-08-30 17:09:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr8ASSERT_VIOLATIONMEMORY_FREE (60 of 89 remaining) [2021-08-30 17:09:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr9ASSERT_VIOLATIONMEMORY_FREE (59 of 89 remaining) [2021-08-30 17:09:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION (58 of 89 remaining) [2021-08-30 17:09:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION (57 of 89 remaining) [2021-08-30 17:09:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION (56 of 89 remaining) [2021-08-30 17:09:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION (55 of 89 remaining) [2021-08-30 17:09:34,638 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION (54 of 89 remaining) [2021-08-30 17:09:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION (53 of 89 remaining) [2021-08-30 17:09:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION (52 of 89 remaining) [2021-08-30 17:09:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION (51 of 89 remaining) [2021-08-30 17:09:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr0REQUIRES_VIOLATION (50 of 89 remaining) [2021-08-30 17:09:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr1REQUIRES_VIOLATION (49 of 89 remaining) [2021-08-30 17:09:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr2REQUIRES_VIOLATION (48 of 89 remaining) [2021-08-30 17:09:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr3REQUIRES_VIOLATION (47 of 89 remaining) [2021-08-30 17:09:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (46 of 89 remaining) [2021-08-30 17:09:34,639 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (45 of 89 remaining) [2021-08-30 17:09:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (44 of 89 remaining) [2021-08-30 17:09:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (43 of 89 remaining) [2021-08-30 17:09:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (42 of 89 remaining) [2021-08-30 17:09:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (41 of 89 remaining) [2021-08-30 17:09:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (40 of 89 remaining) [2021-08-30 17:09:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (39 of 89 remaining) [2021-08-30 17:09:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (38 of 89 remaining) [2021-08-30 17:09:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (37 of 89 remaining) [2021-08-30 17:09:34,640 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (36 of 89 remaining) [2021-08-30 17:09:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (35 of 89 remaining) [2021-08-30 17:09:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (34 of 89 remaining) [2021-08-30 17:09:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (33 of 89 remaining) [2021-08-30 17:09:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (32 of 89 remaining) [2021-08-30 17:09:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (31 of 89 remaining) [2021-08-30 17:09:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (30 of 89 remaining) [2021-08-30 17:09:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (29 of 89 remaining) [2021-08-30 17:09:34,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (28 of 89 remaining) [2021-08-30 17:09:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16ENSURES_VIOLATIONMEMORY_LEAK (27 of 89 remaining) [2021-08-30 17:09:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION (26 of 89 remaining) [2021-08-30 17:09:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION (25 of 89 remaining) [2021-08-30 17:09:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION (24 of 89 remaining) [2021-08-30 17:09:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION (23 of 89 remaining) [2021-08-30 17:09:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (22 of 89 remaining) [2021-08-30 17:09:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (21 of 89 remaining) [2021-08-30 17:09:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (20 of 89 remaining) [2021-08-30 17:09:34,642 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATION (19 of 89 remaining) [2021-08-30 17:09:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATION (18 of 89 remaining) [2021-08-30 17:09:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATION (17 of 89 remaining) [2021-08-30 17:09:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATION (16 of 89 remaining) [2021-08-30 17:09:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (15 of 89 remaining) [2021-08-30 17:09:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE (14 of 89 remaining) [2021-08-30 17:09:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE (13 of 89 remaining) [2021-08-30 17:09:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr0REQUIRES_VIOLATION (12 of 89 remaining) [2021-08-30 17:09:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr1REQUIRES_VIOLATION (11 of 89 remaining) [2021-08-30 17:09:34,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr2REQUIRES_VIOLATION (10 of 89 remaining) [2021-08-30 17:09:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr3REQUIRES_VIOLATION (9 of 89 remaining) [2021-08-30 17:09:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr4REQUIRES_VIOLATION (8 of 89 remaining) [2021-08-30 17:09:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr5REQUIRES_VIOLATION (7 of 89 remaining) [2021-08-30 17:09:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr1REQUIRES_VIOLATION (6 of 89 remaining) [2021-08-30 17:09:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr2REQUIRES_VIOLATION (5 of 89 remaining) [2021-08-30 17:09:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr3REQUIRES_VIOLATION (4 of 89 remaining) [2021-08-30 17:09:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr4REQUIRES_VIOLATION (3 of 89 remaining) [2021-08-30 17:09:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr5REQUIRES_VIOLATION (2 of 89 remaining) [2021-08-30 17:09:34,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr6REQUIRES_VIOLATION (1 of 89 remaining) [2021-08-30 17:09:34,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr7REQUIRES_VIOLATION (0 of 89 remaining) [2021-08-30 17:09:34,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-08-30 17:09:34,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:09:35,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-30 17:09:35,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:09:35,281 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:09:35,285 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:09:35,285 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:09:35,286 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:09:35,286 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:09:35,286 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:09:35,286 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:09:35,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:09:35 BoogieIcfgContainer [2021-08-30 17:09:35,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:09:35,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:09:35,297 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:09:35,297 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:09:35,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:08:25" (3/4) ... [2021-08-30 17:09:35,299 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:09:35,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:09:35,299 INFO L158 Benchmark]: Toolchain (without parser) took 70277.83ms. Allocated memory was 58.7MB in the beginning and 98.6MB in the end (delta: 39.8MB). Free memory was 36.1MB in the beginning and 26.7MB in the end (delta: 9.4MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2021-08-30 17:09:35,299 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:09:35,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.00ms. Allocated memory is still 58.7MB. Free memory was 36.0MB in the beginning and 29.8MB in the end (delta: 6.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-30 17:09:35,299 INFO L158 Benchmark]: Boogie Preprocessor took 62.28ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 29.8MB in the beginning and 54.7MB in the end (delta: -25.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 17:09:35,300 INFO L158 Benchmark]: RCFGBuilder took 570.47ms. Allocated memory is still 73.4MB. Free memory was 54.7MB in the beginning and 38.4MB in the end (delta: 16.4MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2021-08-30 17:09:35,300 INFO L158 Benchmark]: TraceAbstraction took 69294.11ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 38.0MB in the beginning and 26.7MB in the end (delta: 11.3MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2021-08-30 17:09:35,300 INFO L158 Benchmark]: Witness Printer took 2.10ms. Allocated memory is still 98.6MB. Free memory is still 26.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:09:35,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.00ms. Allocated memory is still 58.7MB. Free memory was 36.0MB in the beginning and 29.8MB in the end (delta: 6.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.28ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 29.8MB in the beginning and 54.7MB in the end (delta: -25.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 570.47ms. Allocated memory is still 73.4MB. Free memory was 54.7MB in the beginning and 38.4MB in the end (delta: 16.4MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * TraceAbstraction took 69294.11ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 38.0MB in the beginning and 26.7MB in the end (delta: 11.3MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Witness Printer took 2.10ms. Allocated memory is still 98.6MB. Free memory is still 26.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L777] static struct L0 *list; [L779] CALL l0_insert(&list) [L708] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L708] RET, EXPR zalloc_or_die(sizeof *item) [L708] struct L0 *item = zalloc_or_die(sizeof *item); [L710] CALL l1_insert(&item->down) [L699] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L699] RET, EXPR zalloc_or_die(sizeof *item) [L699] struct L1 *item = zalloc_or_die(sizeof *item); [L701] CALL l2_insert(&item->down) [L690] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L690] RET, EXPR zalloc_or_die(sizeof *item) [L690] struct L2 *item = zalloc_or_die(sizeof *item); [L692] CALL l3_insert(&item->down) [L681] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L681] RET, EXPR zalloc_or_die(sizeof *item) [L681] struct L3 *item = zalloc_or_die(sizeof *item); [L683] CALL l4_insert(&item->down) [L674] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L674] RET, EXPR zalloc_or_die(sizeof *item) [L674] struct L4 *item = zalloc_or_die(sizeof *item); [L675] CALL, EXPR zalloc_or_die(119U) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L675] RET, EXPR zalloc_or_die(119U) [L675] item->down = zalloc_or_die(119U) - UnprovableResult [Line: 731]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 756]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 756]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 295 locations, 89 error locations. Started 1 CEGAR loops. OverallTime: 69245.94ms, OverallIterations: 7, TraceHistogramMax: 18, EmptinessCheckTime: 27.50ms, AutomataDifference: 18437.06ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 16.46ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 17567.72ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 1532 SdHoareTripleChecker+Invalid, 15128.30ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8375 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9220 IncrementalHoareTripleChecker+Invalid, 9261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 281 mSDtfsCounter, 9220 mSolverCounterSat, 49.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 844 GetRequests, 783 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2423.39ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred in iteration=6, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 84.13ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 127.09ms SsaConstructionTime, 465.53ms SatisfiabilityAnalysisTime, 5789.82ms InterpolantComputationTime, 418 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 824 ConstructedInterpolants, 0 QuantifiedInterpolants, 1251 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1959 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 1575/1818 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 could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:09:35,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...