./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ff03de63 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/pthread-memsafety/fillarray1.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 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:20:44,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:20:44,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:20:44,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:20:44,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:20:44,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:20:44,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:20:44,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:20:44,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:20:44,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:20:44,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:20:44,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:20:44,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:20:44,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:20:44,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:20:44,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:20:44,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:20:44,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:20:44,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:20:44,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:20:44,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:20:44,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:20:44,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:20:44,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:20:44,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:20:44,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:20:44,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:20:44,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:20:44,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:20:44,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:20:44,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:20:44,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:20:44,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:20:44,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:20:44,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:20:44,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:20:44,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:20:44,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:20:44,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:20:44,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:20:44,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:20:44,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-21 18:20:44,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:20:44,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:20:44,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:20:44,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:20:44,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:20:44,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:20:44,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:20:44,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:20:44,649 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:20:44,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:20:44,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:20:44,650 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:20:44,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:20:44,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:20:44,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:20:44,651 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:20:44,651 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:20:44,651 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:20:44,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:20:44,652 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:20:44,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:20:44,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:20:44,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:20:44,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:20:44,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:20:44,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:20:44,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:20:44,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:20:44,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 18:20:44,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 18:20:44,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:20:44,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2021-12-21 18:20:44,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:20:44,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:20:44,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:20:44,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:20:44,937 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:20:44,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-21 18:20:45,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5245651/8d9e31152f0a482a9cfc0f2f67a32e70/FLAG3d0773486 [2021-12-21 18:20:45,449 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:20:45,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-21 18:20:45,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5245651/8d9e31152f0a482a9cfc0f2f67a32e70/FLAG3d0773486 [2021-12-21 18:20:45,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a5245651/8d9e31152f0a482a9cfc0f2f67a32e70 [2021-12-21 18:20:45,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:20:45,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:20:45,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:20:45,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:20:45,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:20:45,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:20:45" (1/1) ... [2021-12-21 18:20:45,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f20b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:45, skipping insertion in model container [2021-12-21 18:20:45,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:20:45" (1/1) ... [2021-12-21 18:20:45,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:20:45,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:20:45,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:20:45,932 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-21 18:20:45,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23ebf3cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:45, skipping insertion in model container [2021-12-21 18:20:45,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:20:45,935 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-21 18:20:45,937 INFO L158 Benchmark]: Toolchain (without parser) took 450.64ms. Allocated memory is still 81.8MB. Free memory was 58.9MB in the beginning and 58.1MB in the end (delta: 804.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 18:20:45,938 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:20:45,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.85ms. Allocated memory is still 81.8MB. Free memory was 58.9MB in the beginning and 58.1MB in the end (delta: 804.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 18:20:45,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.85ms. Allocated memory is still 81.8MB. Free memory was 58.9MB in the beginning and 58.1MB in the end (delta: 804.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/pthread-memsafety/fillarray1.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 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:20:47,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:20:47,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:20:47,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:20:47,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:20:47,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:20:47,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:20:47,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:20:47,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:20:47,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:20:47,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:20:47,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:20:47,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:20:47,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:20:47,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:20:47,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:20:47,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:20:47,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:20:47,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:20:47,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:20:47,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:20:47,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:20:47,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:20:47,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:20:47,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:20:47,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:20:47,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:20:47,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:20:47,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:20:47,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:20:47,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:20:47,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:20:47,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:20:47,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:20:47,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:20:47,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:20:47,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:20:47,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:20:47,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:20:47,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:20:47,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:20:47,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-21 18:20:47,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:20:47,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:20:47,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:20:47,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:20:47,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:20:47,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:20:47,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:20:47,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:20:47,772 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:20:47,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:20:47,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:20:47,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:20:47,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:20:47,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:20:47,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:20:47,774 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:20:47,774 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:20:47,775 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:20:47,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:20:47,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:20:47,775 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 18:20:47,775 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 18:20:47,776 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:20:47,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:20:47,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:20:47,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:20:47,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:20:47,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:20:47,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:20:47,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:20:47,783 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 18:20:47,784 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 18:20:47,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:20:47,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 18:20:47,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2021-12-21 18:20:48,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:20:48,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:20:48,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:20:48,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:20:48,132 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:20:48,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-21 18:20:48,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec44a056/75a83ac112db487aa9b24481e97ca011/FLAGb29176ab1 [2021-12-21 18:20:48,759 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:20:48,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-21 18:20:48,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec44a056/75a83ac112db487aa9b24481e97ca011/FLAGb29176ab1 [2021-12-21 18:20:49,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec44a056/75a83ac112db487aa9b24481e97ca011 [2021-12-21 18:20:49,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:20:49,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:20:49,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:20:49,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:20:49,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:20:49,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0d7eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49, skipping insertion in model container [2021-12-21 18:20:49,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:20:49,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:20:49,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:20:49,594 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-21 18:20:49,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:20:49,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:20:49,654 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 18:20:49,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:20:49,775 INFO L208 MainTranslator]: Completed translation [2021-12-21 18:20:49,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49 WrapperNode [2021-12-21 18:20:49,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:20:49,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 18:20:49,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 18:20:49,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 18:20:49,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,842 INFO L137 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2021-12-21 18:20:49,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 18:20:49,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 18:20:49,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 18:20:49,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 18:20:49,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 18:20:49,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 18:20:49,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 18:20:49,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 18:20:49,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (1/1) ... [2021-12-21 18:20:49,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:20:49,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:20:49,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 18:20:49,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 18:20:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-12-21 18:20:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-12-21 18:20:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-12-21 18:20:49,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-12-21 18:20:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 18:20:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 18:20:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-21 18:20:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 18:20:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 18:20:49,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 18:20:49,993 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 18:20:50,144 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 18:20:50,145 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 18:20:50,387 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 18:20:50,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 18:20:50,394 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-21 18:20:50,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:20:50 BoogieIcfgContainer [2021-12-21 18:20:50,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 18:20:50,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 18:20:50,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 18:20:50,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 18:20:50,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:20:49" (1/3) ... [2021-12-21 18:20:50,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e27b90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:20:50, skipping insertion in model container [2021-12-21 18:20:50,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:20:49" (2/3) ... [2021-12-21 18:20:50,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e27b90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:20:50, skipping insertion in model container [2021-12-21 18:20:50,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:20:50" (3/3) ... [2021-12-21 18:20:50,402 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray1.i [2021-12-21 18:20:50,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 18:20:50,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-12-21 18:20:50,407 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 18:20:50,437 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,437 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,437 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,437 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,438 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,438 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,438 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,438 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,439 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,439 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,439 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,439 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,439 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,440 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,440 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,440 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,442 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,442 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,442 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,442 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,443 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,443 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,444 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,444 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,445 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,445 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,445 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,446 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,446 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,446 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,447 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,447 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,448 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,448 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,448 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,448 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,448 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,449 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,449 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,449 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,449 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,449 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,450 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,450 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,450 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,450 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,451 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,451 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,451 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,452 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,452 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,452 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,452 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,452 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,453 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,453 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,454 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,454 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,455 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,455 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,456 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,456 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,456 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,457 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,460 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,460 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,468 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,468 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,468 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,469 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,469 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,472 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,472 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,473 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,473 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 18:20:50,474 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-21 18:20:50,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 18:20:50,517 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 18:20:50,517 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-12-21 18:20:50,528 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-12-21 18:20:50,546 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 105 transitions, 220 flow [2021-12-21 18:20:50,549 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 105 transitions, 220 flow [2021-12-21 18:20:50,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 220 flow [2021-12-21 18:20:50,605 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2021-12-21 18:20:50,605 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 18:20:50,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 109 events. 8/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 152 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2021-12-21 18:20:50,616 INFO L116 LiptonReduction]: Number of co-enabled transitions 2546 [2021-12-21 18:20:57,831 INFO L131 LiptonReduction]: Checked pairs total: 7972 [2021-12-21 18:20:57,831 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-12-21 18:20:57,838 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 45 transitions, 100 flow [2021-12-21 18:20:57,920 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-12-21 18:20:57,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:20:57,934 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-12-21 18:20:57,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:20:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:20:57,939 INFO L85 PathProgramCache]: Analyzing trace with hash 401, now seen corresponding path program 1 times [2021-12-21 18:20:57,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:20:57,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124368744] [2021-12-21 18:20:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:20:57,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:20:57,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:20:57,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:20:57,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 18:20:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:20:58,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 18:20:58,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:20:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:20:58,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:20:58,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:20:58,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124368744] [2021-12-21 18:20:58,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124368744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:20:58,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:20:58,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-12-21 18:20:58,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388869654] [2021-12-21 18:20:58,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:20:58,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 18:20:58,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:20:58,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 18:20:58,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 18:20:58,052 INFO L87 Difference]: Start difference. First operand has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:20:58,245 INFO L93 Difference]: Finished difference Result 1133 states and 3428 transitions. [2021-12-21 18:20:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 18:20:58,248 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-12-21 18:20:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:20:58,288 INFO L225 Difference]: With dead ends: 1133 [2021-12-21 18:20:58,288 INFO L226 Difference]: Without dead ends: 1133 [2021-12-21 18:20:58,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 18:20:58,292 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:20:58,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:20:58,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-12-21 18:20:58,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2021-12-21 18:20:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1082 states have (on average 3.168207024029575) internal successors, (3428), 1132 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 3428 transitions. [2021-12-21 18:20:58,390 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 3428 transitions. Word has length 1 [2021-12-21 18:20:58,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:20:58,390 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 3428 transitions. [2021-12-21 18:20:58,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 3428 transitions. [2021-12-21 18:20:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-12-21 18:20:58,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:20:58,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-12-21 18:20:58,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 18:20:58,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:20:58,600 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:20:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:20:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 12585, now seen corresponding path program 1 times [2021-12-21 18:20:58,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:20:58,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338768440] [2021-12-21 18:20:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:20:58,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:20:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:20:58,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:20:58,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 18:20:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:20:58,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 18:20:58,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:20:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:20:58,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:20:58,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:20:58,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338768440] [2021-12-21 18:20:58,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338768440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:20:58,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:20:58,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 18:20:58,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884394039] [2021-12-21 18:20:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:20:58,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:20:58,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:20:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:20:58,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:20:58,678 INFO L87 Difference]: Start difference. First operand 1133 states and 3428 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:20:58,825 INFO L93 Difference]: Finished difference Result 1132 states and 3427 transitions. [2021-12-21 18:20:58,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:20:58,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-12-21 18:20:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:20:58,834 INFO L225 Difference]: With dead ends: 1132 [2021-12-21 18:20:58,834 INFO L226 Difference]: Without dead ends: 1131 [2021-12-21 18:20:58,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:20:58,835 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:20:58,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 31 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:20:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-12-21 18:20:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1131. [2021-12-21 18:20:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1081 states have (on average 3.169287696577243) internal successors, (3426), 1130 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 3426 transitions. [2021-12-21 18:20:58,947 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 3426 transitions. Word has length 2 [2021-12-21 18:20:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:20:58,948 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 3426 transitions. [2021-12-21 18:20:58,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 3426 transitions. [2021-12-21 18:20:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:20:58,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:20:58,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:20:58,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 18:20:59,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:20:59,150 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:20:59,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:20:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash 395542, now seen corresponding path program 1 times [2021-12-21 18:20:59,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:20:59,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005878378] [2021-12-21 18:20:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:20:59,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:20:59,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:20:59,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:20:59,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 18:20:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:20:59,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:20:59,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:20:59,295 INFO L353 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-21 18:20:59,296 INFO L387 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 2 case distinctions, treesize of input 12 treesize of output 27 [2021-12-21 18:20:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:20:59,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:20:59,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:20:59,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005878378] [2021-12-21 18:20:59,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005878378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:20:59,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:20:59,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 18:20:59,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559415130] [2021-12-21 18:20:59,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:20:59,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:20:59,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:20:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:20:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:20:59,338 INFO L87 Difference]: Start difference. First operand 1131 states and 3426 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:20:59,472 INFO L93 Difference]: Finished difference Result 1120 states and 3403 transitions. [2021-12-21 18:20:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:20:59,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-21 18:20:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:20:59,480 INFO L225 Difference]: With dead ends: 1120 [2021-12-21 18:20:59,480 INFO L226 Difference]: Without dead ends: 1120 [2021-12-21 18:20:59,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:20:59,484 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:20:59,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 22 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:20:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-12-21 18:20:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1120. [2021-12-21 18:20:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1073 states have (on average 3.1714818266542406) internal successors, (3403), 1119 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3403 transitions. [2021-12-21 18:20:59,532 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3403 transitions. Word has length 3 [2021-12-21 18:20:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:20:59,533 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 3403 transitions. [2021-12-21 18:20:59,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:20:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3403 transitions. [2021-12-21 18:20:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:20:59,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:20:59,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:20:59,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-21 18:20:59,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:20:59,743 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:20:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:20:59,744 INFO L85 PathProgramCache]: Analyzing trace with hash 395543, now seen corresponding path program 1 times [2021-12-21 18:20:59,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:20:59,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743784637] [2021-12-21 18:20:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:20:59,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:20:59,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:20:59,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:20:59,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-21 18:20:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:20:59,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 18:20:59,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:20:59,859 INFO L353 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-12-21 18:20:59,860 INFO L387 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 2 case distinctions, treesize of input 12 treesize of output 33 [2021-12-21 18:20:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:20:59,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:20:59,887 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:20:59,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743784637] [2021-12-21 18:20:59,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743784637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:20:59,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:20:59,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 18:20:59,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778179186] [2021-12-21 18:20:59,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:20:59,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:20:59,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:20:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:20:59,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:20:59,890 INFO L87 Difference]: Start difference. First operand 1120 states and 3403 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:00,023 INFO L93 Difference]: Finished difference Result 1109 states and 3380 transitions. [2021-12-21 18:21:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:21:00,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-21 18:21:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:00,032 INFO L225 Difference]: With dead ends: 1109 [2021-12-21 18:21:00,033 INFO L226 Difference]: Without dead ends: 1109 [2021-12-21 18:21:00,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:21:00,036 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:00,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 21 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:21:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-12-21 18:21:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2021-12-21 18:21:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1065 states have (on average 3.1737089201877935) internal successors, (3380), 1108 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 3380 transitions. [2021-12-21 18:21:00,081 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 3380 transitions. Word has length 3 [2021-12-21 18:21:00,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:00,082 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 3380 transitions. [2021-12-21 18:21:00,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 3380 transitions. [2021-12-21 18:21:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 18:21:00,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:00,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 18:21:00,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:00,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:00,292 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash 380126940, now seen corresponding path program 1 times [2021-12-21 18:21:00,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:00,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594998902] [2021-12-21 18:21:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:21:00,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:00,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:00,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:00,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 18:21:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:21:00,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 18:21:00,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:00,420 INFO L353 Elim1Store]: treesize reduction 35, result has 36.4 percent of original size [2021-12-21 18:21:00,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 34 [2021-12-21 18:21:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:00,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:00,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:00,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594998902] [2021-12-21 18:21:00,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594998902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:00,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:00,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 18:21:00,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207588329] [2021-12-21 18:21:00,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:00,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:21:00,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:00,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:21:00,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:21:00,480 INFO L87 Difference]: Start difference. First operand 1109 states and 3380 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:00,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:00,601 INFO L93 Difference]: Finished difference Result 988 states and 2995 transitions. [2021-12-21 18:21:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:21:00,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-21 18:21:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:00,609 INFO L225 Difference]: With dead ends: 988 [2021-12-21 18:21:00,609 INFO L226 Difference]: Without dead ends: 988 [2021-12-21 18:21:00,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:21:00,611 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:00,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 21 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:21:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-12-21 18:21:00,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 988. [2021-12-21 18:21:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 953 states have (on average 3.142707240293809) internal successors, (2995), 987 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 2995 transitions. [2021-12-21 18:21:00,657 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 2995 transitions. Word has length 5 [2021-12-21 18:21:00,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:00,658 INFO L470 AbstractCegarLoop]: Abstraction has 988 states and 2995 transitions. [2021-12-21 18:21:00,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:00,658 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 2995 transitions. [2021-12-21 18:21:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 18:21:00,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:00,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 18:21:00,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:00,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:00,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash 380126927, now seen corresponding path program 1 times [2021-12-21 18:21:00,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:00,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111767833] [2021-12-21 18:21:00,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:21:00,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:00,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:00,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:00,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-21 18:21:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:21:00,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 18:21:00,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:00,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:00,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:00,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111767833] [2021-12-21 18:21:00,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111767833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:00,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:00,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 18:21:00,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753127812] [2021-12-21 18:21:00,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:00,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:21:00,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:00,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:21:00,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:21:00,959 INFO L87 Difference]: Start difference. First operand 988 states and 2995 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:01,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:01,022 INFO L93 Difference]: Finished difference Result 867 states and 2610 transitions. [2021-12-21 18:21:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:21:01,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-21 18:21:01,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:01,028 INFO L225 Difference]: With dead ends: 867 [2021-12-21 18:21:01,028 INFO L226 Difference]: Without dead ends: 867 [2021-12-21 18:21:01,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:21:01,029 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:01,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 11 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:21:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-12-21 18:21:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2021-12-21 18:21:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 841 states have (on average 3.103448275862069) internal successors, (2610), 866 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2610 transitions. [2021-12-21 18:21:01,054 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2610 transitions. Word has length 5 [2021-12-21 18:21:01,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:01,054 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2610 transitions. [2021-12-21 18:21:01,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:01,055 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2610 transitions. [2021-12-21 18:21:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 18:21:01,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:01,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 18:21:01,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:01,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:01,269 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:01,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash 380126939, now seen corresponding path program 1 times [2021-12-21 18:21:01,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:01,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33456328] [2021-12-21 18:21:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:21:01,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:01,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:01,271 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:01,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-21 18:21:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:21:01,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 18:21:01,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:01,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:01,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:01,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33456328] [2021-12-21 18:21:01,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33456328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:01,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:01,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 18:21:01,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127311376] [2021-12-21 18:21:01,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:01,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:21:01,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:01,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:21:01,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:21:01,363 INFO L87 Difference]: Start difference. First operand 867 states and 2610 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:01,438 INFO L93 Difference]: Finished difference Result 746 states and 2225 transitions. [2021-12-21 18:21:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:21:01,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-21 18:21:01,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:01,443 INFO L225 Difference]: With dead ends: 746 [2021-12-21 18:21:01,443 INFO L226 Difference]: Without dead ends: 746 [2021-12-21 18:21:01,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:21:01,444 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:01,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 11 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:21:01,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-12-21 18:21:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2021-12-21 18:21:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 729 states have (on average 3.0521262002743486) internal successors, (2225), 745 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 2225 transitions. [2021-12-21 18:21:01,482 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 2225 transitions. Word has length 5 [2021-12-21 18:21:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:01,483 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 2225 transitions. [2021-12-21 18:21:01,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 2225 transitions. [2021-12-21 18:21:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 18:21:01,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:01,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:01,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:01,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:01,694 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:01,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1466590262, now seen corresponding path program 1 times [2021-12-21 18:21:01,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:01,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926221415] [2021-12-21 18:21:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:21:01,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:01,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:01,697 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:01,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-21 18:21:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:21:01,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:21:01,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:02,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:02,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:02,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926221415] [2021-12-21 18:21:02,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926221415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:02,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:02,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:21:02,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628472831] [2021-12-21 18:21:02,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:02,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:21:02,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:02,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:21:02,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:02,097 INFO L87 Difference]: Start difference. First operand 746 states and 2225 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:02,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:02,147 INFO L93 Difference]: Finished difference Result 745 states and 2222 transitions. [2021-12-21 18:21:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:21:02,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-21 18:21:02,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:02,152 INFO L225 Difference]: With dead ends: 745 [2021-12-21 18:21:02,152 INFO L226 Difference]: Without dead ends: 745 [2021-12-21 18:21:02,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:02,153 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:02,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 65 Unchecked, 0.0s Time] [2021-12-21 18:21:02,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-12-21 18:21:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2021-12-21 18:21:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 728 states have (on average 3.052197802197802) internal successors, (2222), 744 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 2222 transitions. [2021-12-21 18:21:02,186 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 2222 transitions. Word has length 8 [2021-12-21 18:21:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:02,186 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 2222 transitions. [2021-12-21 18:21:02,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 2222 transitions. [2021-12-21 18:21:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:21:02,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:02,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:02,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:02,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:02,400 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:02,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1718577764, now seen corresponding path program 1 times [2021-12-21 18:21:02,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:02,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551056042] [2021-12-21 18:21:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:21:02,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:02,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:02,402 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:02,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-21 18:21:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:21:02,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:21:02,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:02,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:02,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:02,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551056042] [2021-12-21 18:21:02,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551056042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:02,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:02,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:21:02,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388690496] [2021-12-21 18:21:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:02,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:21:02,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:02,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:21:02,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:02,771 INFO L87 Difference]: Start difference. First operand 745 states and 2222 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:02,820 INFO L93 Difference]: Finished difference Result 748 states and 2231 transitions. [2021-12-21 18:21:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:21:02,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:21:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:02,825 INFO L225 Difference]: With dead ends: 748 [2021-12-21 18:21:02,825 INFO L226 Difference]: Without dead ends: 748 [2021-12-21 18:21:02,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:02,826 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:02,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 64 Unchecked, 0.0s Time] [2021-12-21 18:21:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-12-21 18:21:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-12-21 18:21:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 731 states have (on average 3.0519835841313268) internal successors, (2231), 747 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2231 transitions. [2021-12-21 18:21:02,850 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2231 transitions. Word has length 9 [2021-12-21 18:21:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:02,850 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 2231 transitions. [2021-12-21 18:21:02,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2231 transitions. [2021-12-21 18:21:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:21:02,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:02,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:02,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:03,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:03,062 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1780245134, now seen corresponding path program 2 times [2021-12-21 18:21:03,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:03,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362047592] [2021-12-21 18:21:03,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 18:21:03,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:03,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:03,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:03,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-21 18:21:03,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 18:21:03,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:21:03,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:21:03,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:03,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:03,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:03,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362047592] [2021-12-21 18:21:03,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362047592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:03,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:03,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:21:03,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049847867] [2021-12-21 18:21:03,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:03,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:21:03,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:21:03,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:03,418 INFO L87 Difference]: Start difference. First operand 748 states and 2231 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:03,461 INFO L93 Difference]: Finished difference Result 777 states and 2321 transitions. [2021-12-21 18:21:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:21:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:21:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:03,465 INFO L225 Difference]: With dead ends: 777 [2021-12-21 18:21:03,466 INFO L226 Difference]: Without dead ends: 777 [2021-12-21 18:21:03,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:03,467 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:03,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 111 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 119 Unchecked, 0.0s Time] [2021-12-21 18:21:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-21 18:21:03,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2021-12-21 18:21:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 760 states have (on average 3.0539473684210527) internal successors, (2321), 776 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 2321 transitions. [2021-12-21 18:21:03,492 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 2321 transitions. Word has length 9 [2021-12-21 18:21:03,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:03,492 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 2321 transitions. [2021-12-21 18:21:03,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:03,493 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 2321 transitions. [2021-12-21 18:21:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:21:03,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:03,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:03,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:03,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:03,703 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:03,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:03,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1780345574, now seen corresponding path program 3 times [2021-12-21 18:21:03,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:03,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375150696] [2021-12-21 18:21:03,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 18:21:03,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:03,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:03,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:03,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-21 18:21:03,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-21 18:21:03,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:21:03,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:21:03,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:04,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:04,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:04,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375150696] [2021-12-21 18:21:04,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375150696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:04,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:04,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:21:04,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450084487] [2021-12-21 18:21:04,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:04,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:21:04,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:04,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:21:04,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:04,116 INFO L87 Difference]: Start difference. First operand 777 states and 2321 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:04,159 INFO L93 Difference]: Finished difference Result 778 states and 2324 transitions. [2021-12-21 18:21:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:21:04,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:21:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:04,169 INFO L225 Difference]: With dead ends: 778 [2021-12-21 18:21:04,170 INFO L226 Difference]: Without dead ends: 778 [2021-12-21 18:21:04,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:04,170 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:04,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 68 Unchecked, 0.0s Time] [2021-12-21 18:21:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-12-21 18:21:04,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 777. [2021-12-21 18:21:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 760 states have (on average 3.0539473684210527) internal successors, (2321), 776 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 2321 transitions. [2021-12-21 18:21:04,188 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 2321 transitions. Word has length 9 [2021-12-21 18:21:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:04,188 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 2321 transitions. [2021-12-21 18:21:04,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 2321 transitions. [2021-12-21 18:21:04,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:21:04,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:04,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:04,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:04,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:04,399 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1780346380, now seen corresponding path program 1 times [2021-12-21 18:21:04,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230397399] [2021-12-21 18:21:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:21:04,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:04,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:04,401 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:04,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-21 18:21:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:21:04,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:21:04,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:04,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:04,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:04,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230397399] [2021-12-21 18:21:04,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230397399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:04,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:04,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:21:04,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359712180] [2021-12-21 18:21:04,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:04,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:21:04,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:04,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:21:04,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:04,775 INFO L87 Difference]: Start difference. First operand 777 states and 2321 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:04,823 INFO L93 Difference]: Finished difference Result 778 states and 2324 transitions. [2021-12-21 18:21:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:21:04,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:21:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:04,833 INFO L225 Difference]: With dead ends: 778 [2021-12-21 18:21:04,833 INFO L226 Difference]: Without dead ends: 778 [2021-12-21 18:21:04,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:04,834 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:04,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 66 Unchecked, 0.0s Time] [2021-12-21 18:21:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-12-21 18:21:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2021-12-21 18:21:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 761 states have (on average 3.053876478318003) internal successors, (2324), 777 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2324 transitions. [2021-12-21 18:21:04,851 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2324 transitions. Word has length 9 [2021-12-21 18:21:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:04,851 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 2324 transitions. [2021-12-21 18:21:04,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2324 transitions. [2021-12-21 18:21:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:21:04,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:04,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:04,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:05,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:05,062 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:05,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:05,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1780302794, now seen corresponding path program 4 times [2021-12-21 18:21:05,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:05,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961284591] [2021-12-21 18:21:05,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 18:21:05,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:05,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:05,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:05,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-21 18:21:05,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 18:21:05,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:21:05,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:21:05,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:05,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:05,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:05,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961284591] [2021-12-21 18:21:05,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961284591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:05,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:05,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:21:05,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70752416] [2021-12-21 18:21:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:05,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:21:05,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:21:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:05,398 INFO L87 Difference]: Start difference. First operand 778 states and 2324 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:05,441 INFO L93 Difference]: Finished difference Result 777 states and 2321 transitions. [2021-12-21 18:21:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:21:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:21:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:05,445 INFO L225 Difference]: With dead ends: 777 [2021-12-21 18:21:05,445 INFO L226 Difference]: Without dead ends: 777 [2021-12-21 18:21:05,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:05,446 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:05,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 67 Unchecked, 0.0s Time] [2021-12-21 18:21:05,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-21 18:21:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 775. [2021-12-21 18:21:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 758 states have (on average 3.054089709762533) internal successors, (2315), 774 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2315 transitions. [2021-12-21 18:21:05,471 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2315 transitions. Word has length 9 [2021-12-21 18:21:05,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:05,471 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2315 transitions. [2021-12-21 18:21:05,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:05,472 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2315 transitions. [2021-12-21 18:21:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:21:05,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:05,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:05,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:05,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:05,682 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:05,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1780327780, now seen corresponding path program 2 times [2021-12-21 18:21:05,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:05,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905376929] [2021-12-21 18:21:05,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 18:21:05,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:05,684 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:05,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-21 18:21:05,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 18:21:05,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:21:05,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:21:05,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:06,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:06,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:06,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905376929] [2021-12-21 18:21:06,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905376929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:06,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:06,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:21:06,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987677280] [2021-12-21 18:21:06,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:06,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:21:06,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:21:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:06,060 INFO L87 Difference]: Start difference. First operand 775 states and 2315 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:06,107 INFO L93 Difference]: Finished difference Result 777 states and 2321 transitions. [2021-12-21 18:21:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:21:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:21:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:06,112 INFO L225 Difference]: With dead ends: 777 [2021-12-21 18:21:06,112 INFO L226 Difference]: Without dead ends: 777 [2021-12-21 18:21:06,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:06,113 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:06,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 67 Unchecked, 0.0s Time] [2021-12-21 18:21:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-21 18:21:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 776. [2021-12-21 18:21:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 759 states have (on average 3.054018445322793) internal successors, (2318), 775 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2318 transitions. [2021-12-21 18:21:06,136 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2318 transitions. Word has length 9 [2021-12-21 18:21:06,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:06,136 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 2318 transitions. [2021-12-21 18:21:06,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:06,137 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2318 transitions. [2021-12-21 18:21:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:21:06,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:06,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:06,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:06,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:06,347 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1781019700, now seen corresponding path program 3 times [2021-12-21 18:21:06,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:06,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299410414] [2021-12-21 18:21:06,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 18:21:06,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:06,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:06,349 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:06,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-21 18:21:06,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-21 18:21:06,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:21:06,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:21:06,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:06,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:06,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:06,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299410414] [2021-12-21 18:21:06,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299410414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:06,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:06,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:21:06,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552629459] [2021-12-21 18:21:06,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:06,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:21:06,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:21:06,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:06,673 INFO L87 Difference]: Start difference. First operand 776 states and 2318 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:06,705 INFO L93 Difference]: Finished difference Result 806 states and 2411 transitions. [2021-12-21 18:21:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:21:06,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:21:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:06,710 INFO L225 Difference]: With dead ends: 806 [2021-12-21 18:21:06,710 INFO L226 Difference]: Without dead ends: 806 [2021-12-21 18:21:06,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:21:06,711 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:06,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 111 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 95 Unchecked, 0.0s Time] [2021-12-21 18:21:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-12-21 18:21:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 805. [2021-12-21 18:21:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 788 states have (on average 3.0558375634517767) internal successors, (2408), 804 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2408 transitions. [2021-12-21 18:21:06,734 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2408 transitions. Word has length 9 [2021-12-21 18:21:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:06,734 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2408 transitions. [2021-12-21 18:21:06,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2408 transitions. [2021-12-21 18:21:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:21:06,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:06,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:06,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:06,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:06,952 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1742589310, now seen corresponding path program 4 times [2021-12-21 18:21:06,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:06,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262771976] [2021-12-21 18:21:06,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 18:21:06,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:06,954 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:06,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-21 18:21:07,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 18:21:07,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:21:07,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:21:07,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:21:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:21:09,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:21:09,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:21:09,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262771976] [2021-12-21 18:21:09,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262771976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:21:09,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:21:09,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:21:09,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221464144] [2021-12-21 18:21:09,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:21:09,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:21:09,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:21:09,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:21:09,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-21 18:21:09,282 INFO L87 Difference]: Start difference. First operand 805 states and 2408 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:21:09,320 INFO L93 Difference]: Finished difference Result 804 states and 2405 transitions. [2021-12-21 18:21:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:21:09,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 18:21:09,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:21:09,324 INFO L225 Difference]: With dead ends: 804 [2021-12-21 18:21:09,325 INFO L226 Difference]: Without dead ends: 804 [2021-12-21 18:21:09,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-21 18:21:09,326 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:21:09,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 63 Unchecked, 0.0s Time] [2021-12-21 18:21:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-12-21 18:21:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 802. [2021-12-21 18:21:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 785 states have (on average 3.0560509554140127) internal successors, (2399), 801 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2399 transitions. [2021-12-21 18:21:09,352 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2399 transitions. Word has length 9 [2021-12-21 18:21:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:21:09,352 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 2399 transitions. [2021-12-21 18:21:09,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:21:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2399 transitions. [2021-12-21 18:21:09,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:21:09,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:21:09,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:09,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:09,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:09,563 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-21 18:21:09,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:21:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1265797648, now seen corresponding path program 1 times [2021-12-21 18:21:09,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:21:09,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861229186] [2021-12-21 18:21:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:21:09,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:21:09,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:21:09,565 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:21:09,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-21 18:21:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 18:21:09,653 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 18:21:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 18:21:09,700 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-21 18:21:09,701 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 18:21:09,701 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATION (17 of 18 remaining) [2021-12-21 18:21:09,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2021-12-21 18:21:09,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (15 of 18 remaining) [2021-12-21 18:21:09,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (14 of 18 remaining) [2021-12-21 18:21:09,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (13 of 18 remaining) [2021-12-21 18:21:09,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (12 of 18 remaining) [2021-12-21 18:21:09,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2021-12-21 18:21:09,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2021-12-21 18:21:09,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2021-12-21 18:21:09,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (8 of 18 remaining) [2021-12-21 18:21:09,704 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (7 of 18 remaining) [2021-12-21 18:21:09,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (6 of 18 remaining) [2021-12-21 18:21:09,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATION (5 of 18 remaining) [2021-12-21 18:21:09,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (4 of 18 remaining) [2021-12-21 18:21:09,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (3 of 18 remaining) [2021-12-21 18:21:09,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (2 of 18 remaining) [2021-12-21 18:21:09,705 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (1 of 18 remaining) [2021-12-21 18:21:09,706 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (0 of 18 remaining) [2021-12-21 18:21:09,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-21 18:21:09,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:21:09,908 INFO L732 BasicCegarLoop]: Path program histogram: [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:21:09,912 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-21 18:21:09,912 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 18:21:09,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:21:09 BasicIcfg [2021-12-21 18:21:09,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 18:21:09,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 18:21:09,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 18:21:09,935 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 18:21:09,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:20:50" (3/4) ... [2021-12-21 18:21:09,936 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 18:21:09,996 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 18:21:09,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 18:21:09,997 INFO L158 Benchmark]: Toolchain (without parser) took 20928.41ms. Allocated memory was 54.5MB in the beginning and 107.0MB in the end (delta: 52.4MB). Free memory was 30.2MB in the beginning and 75.4MB in the end (delta: -45.2MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2021-12-21 18:21:09,997 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:21:09,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.59ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 30.0MB in the beginning and 39.8MB in the end (delta: -9.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-12-21 18:21:09,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.86ms. Allocated memory is still 71.3MB. Free memory was 39.8MB in the beginning and 37.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:21:09,998 INFO L158 Benchmark]: Boogie Preprocessor took 57.59ms. Allocated memory is still 71.3MB. Free memory was 37.4MB in the beginning and 35.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:21:09,998 INFO L158 Benchmark]: RCFGBuilder took 494.01ms. Allocated memory is still 71.3MB. Free memory was 35.6MB in the beginning and 39.7MB in the end (delta: -4.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:21:09,999 INFO L158 Benchmark]: TraceAbstraction took 19536.80ms. Allocated memory was 71.3MB in the beginning and 107.0MB in the end (delta: 35.7MB). Free memory was 39.5MB in the beginning and 62.1MB in the end (delta: -22.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2021-12-21 18:21:09,999 INFO L158 Benchmark]: Witness Printer took 61.92ms. Allocated memory is still 107.0MB. Free memory was 62.1MB in the beginning and 75.4MB in the end (delta: -13.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-12-21 18:21:10,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.59ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 30.0MB in the beginning and 39.8MB in the end (delta: -9.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.86ms. Allocated memory is still 71.3MB. Free memory was 39.8MB in the beginning and 37.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.59ms. Allocated memory is still 71.3MB. Free memory was 37.4MB in the beginning and 35.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.01ms. Allocated memory is still 71.3MB. Free memory was 35.6MB in the beginning and 39.7MB in the end (delta: -4.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * TraceAbstraction took 19536.80ms. Allocated memory was 71.3MB in the beginning and 107.0MB in the end (delta: 35.7MB). Free memory was 39.5MB in the beginning and 62.1MB in the end (delta: -22.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Witness Printer took 61.92ms. Allocated memory is still 107.0MB. Free memory was 62.1MB in the beginning and 75.4MB in the end (delta: -13.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.3s, 103 PlacesBefore, 45 PlacesAfterwards, 105 TransitionsBefore, 45 TransitionsAfterwards, 2546 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 7972 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2983, positive: 2730, positive conditional: 0, positive unconditional: 2730, negative: 253, negative conditional: 0, negative unconditional: 253, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1339, positive: 1302, positive conditional: 0, positive unconditional: 1302, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1339, positive: 1290, positive conditional: 0, positive unconditional: 1290, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 433, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 401, negative conditional: 0, negative unconditional: 401, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2983, positive: 1428, positive conditional: 0, positive unconditional: 1428, negative: 216, negative conditional: 0, negative unconditional: 216, unknown: 1339, unknown conditional: 0, unknown unconditional: 1339] , Statistics on independence cache: Total cache size (in pairs): 201, Positive cache size: 176, Positive conditional cache size: 0, Positive unconditional cache size: 176, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1049]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1040] 0 int x, y, z; [L1068] 0 size = __VERIFIER_nondet_int() [L1069] COND FALSE 0 !(size < 1 || size > 20) [L1072] 0 int *a = (int *)malloc(size); [L1073] 0 pthread_t id1, id2; [L1074] 0 ind = 0 [L1075] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={1:0}, arg={1:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={7:0}, id2={3:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=-1, size=2, x=0, y=0, z=0] [L1042] 1 x = 1 VAL [arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=0, z=0] [L1043] 1 y = 1 [L1044] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1045] COND FALSE 1 !(y == 1 && z) VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1047] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1048] 1 ++ind [L1049] 1 a[ind] = i - UnprovableResult [Line: 1067]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 131 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 19.4s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 707 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 674 IncrementalHoareTripleChecker+Unchecked, 851 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 386 IncrementalHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 216 mSDtfsCounter, 386 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1135occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 16 MinimizatonAttempts, 7 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 88 ConstructedInterpolants, 71 QuantifiedInterpolants, 3280 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1110 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-21 18:21:10,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)