./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 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/list-properties/list-1.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 6ba4928d27614bbdf140b58cd6ad1ef338e79461 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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/list-properties/list-1.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 6ba4928d27614bbdf140b58cd6ad1ef338e79461 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:46:30,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:46:30,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:46:30,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:46:30,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:46:30,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:46:30,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:46:30,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:46:30,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:46:30,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:46:30,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:46:30,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:46:30,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:46:30,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:46:30,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:46:30,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:46:30,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:46:30,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:46:30,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:46:30,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:46:30,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:46:30,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:46:30,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:46:30,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:46:30,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:46:30,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:46:30,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:46:30,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:46:30,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:46:30,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:46:30,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:46:30,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:46:30,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:46:30,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:46:30,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:46:30,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:46:30,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:46:30,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:46:30,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:46:30,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:46:30,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:46:30,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:46:30,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:46:30,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:46:30,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:46:30,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:46:30,740 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:46:30,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:46:30,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:46:30,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:46:30,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:46:30,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:46:30,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:46:30,743 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:46:30,743 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:46:30,744 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:46:30,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:46:30,744 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:46:30,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:46:30,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:46:30,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:46:30,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:46:30,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:46:30,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:46:30,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:30,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:46:30,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:46:30,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:46:30,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:46:30,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:46:30,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-10-26 03:46:31,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:46:31,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:46:31,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:46:31,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:46:31,230 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:46:31,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2020-10-26 03:46:31,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007eacca4/58afb43f7ef245079657a34665f2a21e/FLAGbaa1e2ee8 [2020-10-26 03:46:32,083 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:46:32,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2020-10-26 03:46:32,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007eacca4/58afb43f7ef245079657a34665f2a21e/FLAGbaa1e2ee8 [2020-10-26 03:46:32,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007eacca4/58afb43f7ef245079657a34665f2a21e [2020-10-26 03:46:32,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:46:32,416 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:46:32,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:32,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:46:32,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:46:32,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:32" (1/1) ... [2020-10-26 03:46:32,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce2f74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32, skipping insertion in model container [2020-10-26 03:46:32,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:32" (1/1) ... [2020-10-26 03:46:32,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:46:32,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:46:32,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:32,826 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:46:32,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:32,953 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:46:32,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32 WrapperNode [2020-10-26 03:46:32,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:32,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:46:32,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:46:32,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:46:32,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32" (1/1) ... [2020-10-26 03:46:32,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32" (1/1) ... [2020-10-26 03:46:32,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32" (1/1) ... [2020-10-26 03:46:32,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32" (1/1) ... [2020-10-26 03:46:33,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32" (1/1) ... [2020-10-26 03:46:33,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32" (1/1) ... [2020-10-26 03:46:33,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32" (1/1) ... [2020-10-26 03:46:33,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:46:33,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:46:33,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:46:33,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:46:33,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:46:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:46:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:46:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:46:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:46:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:46:33,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:46:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:46:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-26 03:46:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:46:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:46:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:46:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 03:46:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 03:46:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:46:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:46:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:46:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:46:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:46:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:46:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:46:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:46:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:46:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:46:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:46:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:46:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:46:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:46:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:46:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:46:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:46:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:46:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:46:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:46:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:46:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:46:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:46:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:46:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:46:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:46:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:46:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:46:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:46:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:46:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:46:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:46:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:46:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:46:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:46:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:46:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:46:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:46:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:46:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:46:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:46:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:46:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:46:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:46:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:46:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:46:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:46:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:46:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:46:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:46:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:46:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:46:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:46:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:46:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:46:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:46:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:46:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:46:33,139 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:46:33,139 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:46:33,139 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:46:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:46:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:46:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:46:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:46:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:46:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:46:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:46:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:46:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:46:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:46:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:46:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:46:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:46:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:46:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:46:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:46:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:46:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:46:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:46:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:46:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:46:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:46:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:46:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:46:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:46:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:46:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:46:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:46:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:46:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:46:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:46:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:46:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:46:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:46:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:46:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:46:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:46:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:46:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:46:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:46:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:46:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:46:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:46:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:46:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:46:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:46:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:46:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:46:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-26 03:46:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:46:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:46:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:46:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-26 03:46:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-26 03:46:33,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:46:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:46:33,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 03:46:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:46:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:46:33,549 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-26 03:46:33,785 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:46:33,786 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-26 03:46:33,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:33 BoogieIcfgContainer [2020-10-26 03:46:33,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:46:33,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:46:33,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:46:33,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:46:33,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:46:32" (1/3) ... [2020-10-26 03:46:33,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392df5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:33, skipping insertion in model container [2020-10-26 03:46:33,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:32" (2/3) ... [2020-10-26 03:46:33,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392df5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:33, skipping insertion in model container [2020-10-26 03:46:33,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:33" (3/3) ... [2020-10-26 03:46:33,802 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-10-26 03:46:33,815 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:46:33,821 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-10-26 03:46:33,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-10-26 03:46:33,875 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:46:33,875 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:46:33,875 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:46:33,876 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:46:33,876 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:46:33,876 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:46:33,876 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:46:33,876 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:46:33,903 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-10-26 03:46:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:46:33,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:33,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:33,913 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:33,920 INFO L82 PathProgramCache]: Analyzing trace with hash -529419567, now seen corresponding path program 1 times [2020-10-26 03:46:33,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:33,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212258988] [2020-10-26 03:46:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:34,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:34,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212258988] [2020-10-26 03:46:34,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:34,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:46:34,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855580712] [2020-10-26 03:46:34,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:46:34,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:34,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:46:34,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:34,207 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 5 states. [2020-10-26 03:46:34,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:34,495 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-26 03:46:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:34,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:46:34,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:34,505 INFO L225 Difference]: With dead ends: 82 [2020-10-26 03:46:34,505 INFO L226 Difference]: Without dead ends: 74 [2020-10-26 03:46:34,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-26 03:46:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-10-26 03:46:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-26 03:46:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-10-26 03:46:34,549 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 11 [2020-10-26 03:46:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:34,550 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-10-26 03:46:34,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:46:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-10-26 03:46:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:46:34,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:34,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:34,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:46:34,552 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:34,553 INFO L82 PathProgramCache]: Analyzing trace with hash -529419566, now seen corresponding path program 1 times [2020-10-26 03:46:34,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:34,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226409443] [2020-10-26 03:46:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:34,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:34,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226409443] [2020-10-26 03:46:34,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:34,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:46:34,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729935954] [2020-10-26 03:46:34,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:46:34,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:34,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:46:34,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:34,664 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 5 states. [2020-10-26 03:46:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:34,892 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-10-26 03:46:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:34,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:46:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:34,896 INFO L225 Difference]: With dead ends: 93 [2020-10-26 03:46:34,896 INFO L226 Difference]: Without dead ends: 93 [2020-10-26 03:46:34,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-26 03:46:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-10-26 03:46:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-26 03:46:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-26 03:46:34,908 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 11 [2020-10-26 03:46:34,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:34,908 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-26 03:46:34,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:46:34,908 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-26 03:46:34,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:46:34,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:34,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:34,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:46:34,910 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:34,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:34,911 INFO L82 PathProgramCache]: Analyzing trace with hash 745437086, now seen corresponding path program 1 times [2020-10-26 03:46:34,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:34,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476785720] [2020-10-26 03:46:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:35,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476785720] [2020-10-26 03:46:35,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:35,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 03:46:35,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399265647] [2020-10-26 03:46:35,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:35,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:35,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:35,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:35,031 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 7 states. [2020-10-26 03:46:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:35,299 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-10-26 03:46:35,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:46:35,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-26 03:46:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:35,301 INFO L225 Difference]: With dead ends: 119 [2020-10-26 03:46:35,301 INFO L226 Difference]: Without dead ends: 119 [2020-10-26 03:46:35,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:46:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-26 03:46:35,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2020-10-26 03:46:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-26 03:46:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-10-26 03:46:35,311 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 19 [2020-10-26 03:46:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:35,311 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-10-26 03:46:35,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:46:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-10-26 03:46:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:46:35,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:35,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:35,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:46:35,322 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:35,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:35,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276100, now seen corresponding path program 1 times [2020-10-26 03:46:35,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:35,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154419234] [2020-10-26 03:46:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:35,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154419234] [2020-10-26 03:46:35,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:35,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:46:35,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680949605] [2020-10-26 03:46:35,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:35,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:35,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:35,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:35,494 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-10-26 03:46:35,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:35,866 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-10-26 03:46:35,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:46:35,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-26 03:46:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:35,869 INFO L225 Difference]: With dead ends: 110 [2020-10-26 03:46:35,869 INFO L226 Difference]: Without dead ends: 110 [2020-10-26 03:46:35,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:46:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-26 03:46:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-10-26 03:46:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-26 03:46:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-10-26 03:46:35,885 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 19 [2020-10-26 03:46:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:35,886 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-10-26 03:46:35,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:46:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-10-26 03:46:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:46:35,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:35,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:35,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:46:35,889 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:35,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276101, now seen corresponding path program 1 times [2020-10-26 03:46:35,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:35,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898645574] [2020-10-26 03:46:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:36,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:36,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898645574] [2020-10-26 03:46:36,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:36,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:46:36,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974914893] [2020-10-26 03:46:36,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:36,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:36,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:36,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:36,058 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 7 states. [2020-10-26 03:46:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:36,559 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-10-26 03:46:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:46:36,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-26 03:46:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:36,562 INFO L225 Difference]: With dead ends: 111 [2020-10-26 03:46:36,562 INFO L226 Difference]: Without dead ends: 111 [2020-10-26 03:46:36,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:46:36,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-26 03:46:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2020-10-26 03:46:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-26 03:46:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-26 03:46:36,570 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 19 [2020-10-26 03:46:36,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:36,570 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-26 03:46:36,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:46:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-26 03:46:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:46:36,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:36,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:36,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:46:36,573 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:36,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:36,573 INFO L82 PathProgramCache]: Analyzing trace with hash -942076661, now seen corresponding path program 1 times [2020-10-26 03:46:36,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:36,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799759515] [2020-10-26 03:46:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:36,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799759515] [2020-10-26 03:46:36,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:36,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 03:46:36,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29992265] [2020-10-26 03:46:36,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:36,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:36,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:36,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:36,688 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-10-26 03:46:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:36,921 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-10-26 03:46:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:46:36,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-26 03:46:36,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:36,923 INFO L225 Difference]: With dead ends: 107 [2020-10-26 03:46:36,923 INFO L226 Difference]: Without dead ends: 107 [2020-10-26 03:46:36,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:46:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-26 03:46:36,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-10-26 03:46:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-26 03:46:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-26 03:46:36,931 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2020-10-26 03:46:36,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:36,931 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-26 03:46:36,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:46:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-26 03:46:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:46:36,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:36,933 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:36,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 03:46:36,933 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:36,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:36,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890890, now seen corresponding path program 1 times [2020-10-26 03:46:36,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:36,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258907486] [2020-10-26 03:46:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:37,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258907486] [2020-10-26 03:46:37,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:37,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:46:37,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550783907] [2020-10-26 03:46:37,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:37,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:37,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:37,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:37,021 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-10-26 03:46:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:37,293 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-10-26 03:46:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:46:37,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-26 03:46:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:37,295 INFO L225 Difference]: With dead ends: 91 [2020-10-26 03:46:37,295 INFO L226 Difference]: Without dead ends: 91 [2020-10-26 03:46:37,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:46:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-26 03:46:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-26 03:46:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-26 03:46:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-26 03:46:37,302 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2020-10-26 03:46:37,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:37,302 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-26 03:46:37,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:46:37,303 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-26 03:46:37,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:46:37,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:37,304 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:37,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 03:46:37,304 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:37,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:37,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890889, now seen corresponding path program 1 times [2020-10-26 03:46:37,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:37,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788075712] [2020-10-26 03:46:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:37,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788075712] [2020-10-26 03:46:37,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:37,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:46:37,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409820988] [2020-10-26 03:46:37,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:37,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:37,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:37,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:37,409 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-10-26 03:46:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:37,807 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-10-26 03:46:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:46:37,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-26 03:46:37,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:37,809 INFO L225 Difference]: With dead ends: 88 [2020-10-26 03:46:37,809 INFO L226 Difference]: Without dead ends: 88 [2020-10-26 03:46:37,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:46:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-26 03:46:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-10-26 03:46:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-26 03:46:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-10-26 03:46:37,822 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2020-10-26 03:46:37,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:37,822 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-10-26 03:46:37,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:46:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-10-26 03:46:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 03:46:37,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:37,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:37,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 03:46:37,824 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:37,824 INFO L82 PathProgramCache]: Analyzing trace with hash 851943190, now seen corresponding path program 1 times [2020-10-26 03:46:37,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:37,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450901327] [2020-10-26 03:46:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:37,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450901327] [2020-10-26 03:46:37,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:37,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 03:46:37,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394375793] [2020-10-26 03:46:37,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:37,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:37,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:37,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:37,906 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 7 states. [2020-10-26 03:46:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:38,160 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-10-26 03:46:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:46:38,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-26 03:46:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:38,162 INFO L225 Difference]: With dead ends: 92 [2020-10-26 03:46:38,162 INFO L226 Difference]: Without dead ends: 92 [2020-10-26 03:46:38,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:46:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-26 03:46:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-10-26 03:46:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-26 03:46:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-26 03:46:38,178 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2020-10-26 03:46:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:38,178 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-26 03:46:38,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:46:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-26 03:46:38,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 03:46:38,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:38,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:38,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 03:46:38,180 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:38,181 INFO L82 PathProgramCache]: Analyzing trace with hash 858770483, now seen corresponding path program 1 times [2020-10-26 03:46:38,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:38,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596302107] [2020-10-26 03:46:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:38,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:38,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:38,258 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:46:38,258 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:46:38,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 03:46:38,291 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-26 03:46:38,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:46:38 BoogieIcfgContainer [2020-10-26 03:46:38,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:46:38,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:46:38,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:46:38,322 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:46:38,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:33" (3/4) ... [2020-10-26 03:46:38,327 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:46:38,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:46:38,330 INFO L168 Benchmark]: Toolchain (without parser) took 5927.22 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 39.2 MB in the beginning and 70.0 MB in the end (delta: -30.8 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:38,332 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.8 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:38,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.78 ms. Allocated memory is still 54.5 MB. Free memory was 38.6 MB in the beginning and 29.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:38,334 INFO L168 Benchmark]: Boogie Preprocessor took 76.72 ms. Allocated memory is still 54.5 MB. Free memory was 29.3 MB in the beginning and 26.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:38,340 INFO L168 Benchmark]: RCFGBuilder took 757.19 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.5 MB in the beginning and 33.7 MB in the end (delta: -7.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:38,342 INFO L168 Benchmark]: TraceAbstraction took 4529.72 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 33.3 MB in the beginning and 70.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:38,346 INFO L168 Benchmark]: Witness Printer took 5.97 ms. Allocated memory is still 119.5 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:38,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.8 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 535.78 ms. Allocated memory is still 54.5 MB. Free memory was 38.6 MB in the beginning and 29.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.72 ms. Allocated memory is still 54.5 MB. Free memory was 29.3 MB in the beginning and 26.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 757.19 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.5 MB in the beginning and 33.7 MB in the end (delta: -7.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4529.72 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 33.3 MB in the beginning and 70.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.97 ms. Allocated memory is still 119.5 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 677 SDslu, 911 SDs, 0 SdLazy, 1850 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 178 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 14484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-26 03:46:40,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:46:40,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:46:40,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:46:40,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:46:40,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:46:40,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:46:40,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:46:40,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:46:40,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:46:40,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:46:40,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:46:40,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:46:40,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:46:40,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:46:40,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:46:40,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:46:40,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:46:40,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:46:40,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:46:40,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:46:40,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:46:40,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:46:40,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:46:40,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:46:40,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:46:40,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:46:40,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:46:40,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:46:40,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:46:40,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:46:40,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:46:40,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:46:40,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:46:40,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:46:40,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:46:40,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:46:40,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:46:40,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:46:40,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:46:40,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:46:40,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-26 03:46:41,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:46:41,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:46:41,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:46:41,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:46:41,042 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:46:41,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:46:41,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:46:41,043 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:46:41,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:46:41,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:46:41,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:46:41,044 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:46:41,045 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:46:41,045 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:46:41,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:46:41,045 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:46:41,046 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-26 03:46:41,046 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-26 03:46:41,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:46:41,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:46:41,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:46:41,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:46:41,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:46:41,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:46:41,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:41,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:46:41,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:46:41,049 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-26 03:46:41,049 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-26 03:46:41,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:46:41,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-26 03:46:41,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-10-26 03:46:41,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:46:41,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:46:41,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:46:41,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:46:41,514 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:46:41,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2020-10-26 03:46:41,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82dab4b5/1496b99e5b5a4a4dbf338489b4de014d/FLAG3a92593f3 [2020-10-26 03:46:42,256 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:46:42,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2020-10-26 03:46:42,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82dab4b5/1496b99e5b5a4a4dbf338489b4de014d/FLAG3a92593f3 [2020-10-26 03:46:42,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82dab4b5/1496b99e5b5a4a4dbf338489b4de014d [2020-10-26 03:46:42,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:46:42,518 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:46:42,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:42,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:46:42,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:46:42,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:42" (1/1) ... [2020-10-26 03:46:42,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3486687e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:42, skipping insertion in model container [2020-10-26 03:46:42,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:42" (1/1) ... [2020-10-26 03:46:42,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:46:42,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:46:42,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:42,971 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:46:43,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:43,154 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:46:43,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43 WrapperNode [2020-10-26 03:46:43,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:43,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:46:43,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:46:43,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:46:43,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43" (1/1) ... [2020-10-26 03:46:43,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43" (1/1) ... [2020-10-26 03:46:43,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43" (1/1) ... [2020-10-26 03:46:43,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43" (1/1) ... [2020-10-26 03:46:43,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43" (1/1) ... [2020-10-26 03:46:43,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43" (1/1) ... [2020-10-26 03:46:43,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43" (1/1) ... [2020-10-26 03:46:43,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:46:43,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:46:43,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:46:43,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:46:43,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:43,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:46:43,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:46:43,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-26 03:46:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:46:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:46:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:46:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:46:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:46:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:46:43,325 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-26 03:46:43,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:46:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:46:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:46:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 03:46:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 03:46:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:46:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:46:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:46:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:46:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:46:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:46:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:46:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:46:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:46:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:46:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:46:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:46:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:46:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:46:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:46:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:46:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:46:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:46:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:46:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:46:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:46:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:46:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:46:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:46:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:46:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:46:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:46:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:46:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:46:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:46:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:46:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:46:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:46:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:46:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:46:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:46:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:46:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:46:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:46:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:46:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:46:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:46:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:46:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:46:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:46:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:46:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:46:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:46:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:46:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:46:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:46:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:46:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:46:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:46:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:46:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:46:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:46:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:46:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:46:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:46:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:46:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:46:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:46:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:46:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:46:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:46:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:46:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:46:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:46:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:46:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:46:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:46:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:46:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:46:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:46:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:46:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:46:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:46:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:46:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:46:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:46:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:46:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:46:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:46:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:46:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:46:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:46:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:46:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:46:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:46:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:46:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:46:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:46:43,343 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:46:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:46:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:46:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:46:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:46:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:46:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:46:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:46:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:46:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:46:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:46:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:46:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:46:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:46:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:46:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:46:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-26 03:46:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:46:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:46:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-26 03:46:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-26 03:46:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-26 03:46:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-26 03:46:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:46:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-26 03:46:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:46:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-26 03:46:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-26 03:46:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-26 03:46:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:46:43,752 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-26 03:46:44,149 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:46:44,149 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-26 03:46:44,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:44 BoogieIcfgContainer [2020-10-26 03:46:44,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:46:44,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:46:44,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:46:44,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:46:44,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:46:42" (1/3) ... [2020-10-26 03:46:44,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3b5bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:44, skipping insertion in model container [2020-10-26 03:46:44,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:43" (2/3) ... [2020-10-26 03:46:44,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3b5bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:44, skipping insertion in model container [2020-10-26 03:46:44,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:44" (3/3) ... [2020-10-26 03:46:44,166 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-10-26 03:46:44,178 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:46:44,183 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-10-26 03:46:44,196 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-10-26 03:46:44,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:46:44,219 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:46:44,219 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:46:44,220 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:46:44,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:46:44,220 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:46:44,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:46:44,220 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:46:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-10-26 03:46:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:44,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:44,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:44,246 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061945, now seen corresponding path program 1 times [2020-10-26 03:46:44,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:44,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084871525] [2020-10-26 03:46:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:44,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:46:44,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:44,622 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:44,623 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:44,635 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:44,636 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:44,636 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:46:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:44,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:44,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084871525] [2020-10-26 03:46:44,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:44,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-26 03:46:44,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762817584] [2020-10-26 03:46:44,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:46:44,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:44,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:46:44,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:44,839 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-10-26 03:46:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:45,588 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-10-26 03:46:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:45,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 03:46:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:45,600 INFO L225 Difference]: With dead ends: 119 [2020-10-26 03:46:45,600 INFO L226 Difference]: Without dead ends: 108 [2020-10-26 03:46:45,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:46:45,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-26 03:46:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-10-26 03:46:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-26 03:46:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2020-10-26 03:46:45,642 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 10 [2020-10-26 03:46:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:45,643 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2020-10-26 03:46:45,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:46:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2020-10-26 03:46:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:45,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:45,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:45,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-26 03:46:45,856 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:45,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:45,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061944, now seen corresponding path program 1 times [2020-10-26 03:46:45,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:45,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643169614] [2020-10-26 03:46:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:45,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 03:46:45,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:46,005 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:46,005 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:46,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:46,008 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:46,008 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:46:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:46,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:46,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643169614] [2020-10-26 03:46:46,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:46,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-26 03:46:46,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185669501] [2020-10-26 03:46:46,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:46:46,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:46,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:46:46,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:46:46,046 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand 4 states. [2020-10-26 03:46:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:46,281 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-10-26 03:46:46,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:46:46,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 03:46:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:46,284 INFO L225 Difference]: With dead ends: 77 [2020-10-26 03:46:46,284 INFO L226 Difference]: Without dead ends: 77 [2020-10-26 03:46:46,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-26 03:46:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-26 03:46:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-26 03:46:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-10-26 03:46:46,299 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2020-10-26 03:46:46,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:46,300 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-10-26 03:46:46,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:46:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-10-26 03:46:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:46:46,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:46,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:46,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-26 03:46:46,519 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:46,520 INFO L82 PathProgramCache]: Analyzing trace with hash 318419033, now seen corresponding path program 1 times [2020-10-26 03:46:46,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:46,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084614174] [2020-10-26 03:46:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:46,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:46:46,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:46,696 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-10-26 03:46:46,696 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:46,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:46,700 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:46,700 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-26 03:46:46,734 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 9 [2020-10-26 03:46:46,734 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:46,737 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:46,737 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:46,737 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-26 03:46:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:46,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:46,811 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 12 [2020-10-26 03:46:46,813 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-26 03:46:46,819 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:46,820 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-26 03:46:46,820 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:7 [2020-10-26 03:46:46,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:46,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084614174] [2020-10-26 03:46:46,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:46,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-26 03:46:46,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047098689] [2020-10-26 03:46:46,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 03:46:46,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:46,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 03:46:46,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:46:46,830 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 9 states. [2020-10-26 03:46:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:47,519 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-10-26 03:46:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 03:46:47,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-26 03:46:47,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:47,525 INFO L225 Difference]: With dead ends: 150 [2020-10-26 03:46:47,525 INFO L226 Difference]: Without dead ends: 150 [2020-10-26 03:46:47,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:46:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-26 03:46:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 83. [2020-10-26 03:46:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-26 03:46:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-10-26 03:46:47,536 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 17 [2020-10-26 03:46:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:47,536 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-10-26 03:46:47,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 03:46:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-10-26 03:46:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:46:47,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:47,538 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:47,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-26 03:46:47,739 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:47,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575182, now seen corresponding path program 1 times [2020-10-26 03:46:47,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:47,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103786706] [2020-10-26 03:46:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:47,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:46:47,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:47,913 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:47,913 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:47,920 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:47,920 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:47,921 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:46:47,945 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-26 03:46:47,945 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:47,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:47,966 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-26 03:46:47,967 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:47,986 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:47,987 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:47,988 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-26 03:46:48,024 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2020-10-26 03:46:48,025 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:48,038 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:48,042 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 9 [2020-10-26 03:46:48,043 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:48,050 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:48,050 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:48,050 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-26 03:46:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:48,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:48,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103786706] [2020-10-26 03:46:48,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:48,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-26 03:46:48,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90778563] [2020-10-26 03:46:48,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 03:46:48,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:48,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 03:46:48,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:46:48,331 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 10 states. [2020-10-26 03:46:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:49,736 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-10-26 03:46:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:46:49,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-26 03:46:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:49,738 INFO L225 Difference]: With dead ends: 111 [2020-10-26 03:46:49,739 INFO L226 Difference]: Without dead ends: 111 [2020-10-26 03:46:49,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:46:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-26 03:46:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2020-10-26 03:46:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-26 03:46:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2020-10-26 03:46:49,747 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 17 [2020-10-26 03:46:49,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:49,747 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2020-10-26 03:46:49,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 03:46:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2020-10-26 03:46:49,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:46:49,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:49,749 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:49,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-26 03:46:49,961 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:49,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575183, now seen corresponding path program 1 times [2020-10-26 03:46:49,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:49,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980905314] [2020-10-26 03:46:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:50,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:46:50,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:50,130 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:50,130 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:50,132 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:50,132 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:50,132 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:46:50,165 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-26 03:46:50,165 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:50,184 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:50,186 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:50,186 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-26 03:46:50,207 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 11 [2020-10-26 03:46:50,208 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:50,211 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:50,211 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:50,211 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-26 03:46:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:50,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:50,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980905314] [2020-10-26 03:46:50,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:50,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-26 03:46:50,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779643181] [2020-10-26 03:46:50,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:46:50,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:50,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:46:50,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:50,256 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand 6 states. [2020-10-26 03:46:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:50,698 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-10-26 03:46:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:46:50,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-26 03:46:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:50,700 INFO L225 Difference]: With dead ends: 102 [2020-10-26 03:46:50,700 INFO L226 Difference]: Without dead ends: 102 [2020-10-26 03:46:50,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:46:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-26 03:46:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 81. [2020-10-26 03:46:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-26 03:46:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-10-26 03:46:50,707 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 17 [2020-10-26 03:46:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:50,708 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-10-26 03:46:50,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:46:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-10-26 03:46:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 03:46:50,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:50,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:50,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-26 03:46:50,910 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:50,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715062, now seen corresponding path program 1 times [2020-10-26 03:46:50,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:50,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410009437] [2020-10-26 03:46:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:51,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:46:51,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:51,075 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:51,075 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:51,078 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,078 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:46:51,091 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-26 03:46:51,091 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:51,102 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,103 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-26 03:46:51,120 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 11 [2020-10-26 03:46:51,120 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:51,123 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,124 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-26 03:46:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:51,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:51,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410009437] [2020-10-26 03:46:51,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:51,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-26 03:46:51,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104771816] [2020-10-26 03:46:51,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:46:51,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:51,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:46:51,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:51,166 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 6 states. [2020-10-26 03:46:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:51,567 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-10-26 03:46:51,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:46:51,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-26 03:46:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:51,569 INFO L225 Difference]: With dead ends: 100 [2020-10-26 03:46:51,569 INFO L226 Difference]: Without dead ends: 100 [2020-10-26 03:46:51,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:46:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-26 03:46:51,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-10-26 03:46:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-26 03:46:51,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-10-26 03:46:51,577 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 18 [2020-10-26 03:46:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:51,577 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-10-26 03:46:51,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:46:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-10-26 03:46:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 03:46:51,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:51,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:51,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-26 03:46:51,793 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:51,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715063, now seen corresponding path program 1 times [2020-10-26 03:46:51,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:51,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801119820] [2020-10-26 03:46:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:51,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:46:51,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:51,957 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:51,957 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,963 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:51,964 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:46:51,998 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-26 03:46:51,999 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,013 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:52,019 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-26 03:46:52,019 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,031 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:52,032 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,032 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-26 03:46:52,067 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2020-10-26 03:46:52,068 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,080 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:52,083 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 9 [2020-10-26 03:46:52,083 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,089 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:52,090 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,090 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-26 03:46:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:52,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:52,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801119820] [2020-10-26 03:46:52,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:52,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-26 03:46:52,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936551093] [2020-10-26 03:46:52,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 03:46:52,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:52,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 03:46:52,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:46:52,334 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 10 states. [2020-10-26 03:46:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:53,532 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2020-10-26 03:46:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:46:53,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-26 03:46:53,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:53,534 INFO L225 Difference]: With dead ends: 98 [2020-10-26 03:46:53,534 INFO L226 Difference]: Without dead ends: 98 [2020-10-26 03:46:53,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:46:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-26 03:46:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 67. [2020-10-26 03:46:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-26 03:46:53,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-26 03:46:53,541 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 18 [2020-10-26 03:46:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:53,541 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-26 03:46:53,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 03:46:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-26 03:46:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:46:53,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:53,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:53,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-26 03:46:53,754 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:53,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:53,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1010435462, now seen corresponding path program 1 times [2020-10-26 03:46:53,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:53,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401112674] [2020-10-26 03:46:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:53,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:46:53,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:53,920 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-10-26 03:46:53,920 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,923 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:53,923 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,923 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-26 03:46:53,947 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 9 [2020-10-26 03:46:53,948 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,952 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:53,952 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,952 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-26 03:46:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:53,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:54,012 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 14 [2020-10-26 03:46:54,015 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-26 03:46:54,028 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:54,028 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-26 03:46:54,028 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2020-10-26 03:46:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:54,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401112674] [2020-10-26 03:46:54,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:54,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-26 03:46:54,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573125011] [2020-10-26 03:46:54,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 03:46:54,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:54,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 03:46:54,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:46:54,038 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 9 states. [2020-10-26 03:46:54,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:54,649 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2020-10-26 03:46:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 03:46:54,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-26 03:46:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:54,651 INFO L225 Difference]: With dead ends: 135 [2020-10-26 03:46:54,651 INFO L226 Difference]: Without dead ends: 135 [2020-10-26 03:46:54,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:46:54,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-26 03:46:54,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 85. [2020-10-26 03:46:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-26 03:46:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-10-26 03:46:54,658 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2020-10-26 03:46:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:54,658 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-10-26 03:46:54,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 03:46:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-10-26 03:46:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:46:54,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:54,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:54,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-26 03:46:54,874 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:54,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:54,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1257104172, now seen corresponding path program 1 times [2020-10-26 03:46:54,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:54,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575141768] [2020-10-26 03:46:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:55,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:55,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:55,082 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-26 03:46:55,082 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:46:55,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-26 03:46:55,315 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-26 03:46:55,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:46:55 BoogieIcfgContainer [2020-10-26 03:46:55,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:46:55,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:46:55,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:46:55,340 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:46:55,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:44" (3/4) ... [2020-10-26 03:46:55,344 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:46:55,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:46:55,348 INFO L168 Benchmark]: Toolchain (without parser) took 12833.34 ms. Allocated memory was 44.0 MB in the beginning and 119.5 MB in the end (delta: 75.5 MB). Free memory was 26.0 MB in the beginning and 97.5 MB in the end (delta: -71.6 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:55,350 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 44.0 MB. Free memory is still 23.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:55,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.19 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 25.3 MB in the beginning and 35.1 MB in the end (delta: -9.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:55,352 INFO L168 Benchmark]: Boogie Preprocessor took 82.80 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 32.1 MB in the end (delta: 3.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:55,353 INFO L168 Benchmark]: RCFGBuilder took 901.25 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.1 MB in the beginning and 39.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:55,355 INFO L168 Benchmark]: TraceAbstraction took 11180.66 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 39.4 MB in the beginning and 98.6 MB in the end (delta: -59.2 MB). Peak memory consumption was 61.8 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:55,359 INFO L168 Benchmark]: Witness Printer took 5.24 ms. Allocated memory is still 119.5 MB. Free memory was 98.6 MB in the beginning and 97.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:55,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 44.0 MB. Free memory is still 23.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 649.19 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 25.3 MB in the beginning and 35.1 MB in the end (delta: -9.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.80 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 32.1 MB in the end (delta: 3.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 901.25 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.1 MB in the beginning and 39.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11180.66 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 39.4 MB in the beginning and 98.6 MB in the end (delta: -59.2 MB). Peak memory consumption was 61.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.24 ms. Allocated memory is still 119.5 MB. Free memory was 98.6 MB in the beginning and 97.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L533] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L534] List t; [L535] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L551] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L552] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 98 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.0s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 362 SDtfs, 858 SDslu, 1153 SDs, 0 SdLazy, 1460 SolverSat, 160 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 242 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 15614 SizeOfPredicates, 62 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 16/16 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 Received shutdown request...