./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8 --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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:34:17,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:34:17,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:34:17,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:34:17,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:34:17,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:34:17,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:34:17,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:34:17,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:34:17,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:34:17,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:34:17,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:34:17,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:34:17,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:34:17,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:34:17,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:34:17,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:34:17,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:34:17,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:34:17,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:34:17,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:34:17,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:34:17,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:34:17,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:34:17,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:34:17,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:34:17,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:34:17,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:34:17,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:34:17,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:34:17,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:34:17,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:34:17,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:34:17,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:34:17,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:34:17,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:34:17,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:34:17,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:34:17,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:34:17,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:34:17,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:34:17,238 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:34:17,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:34:17,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:34:17,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:34:17,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:34:17,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:34:17,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:34:17,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:34:17,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:34:17,273 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:34:17,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:34:17,273 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:34:17,274 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:34:17,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:34:17,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:34:17,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:34:17,275 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:34:17,275 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:34:17,275 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:34:17,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:34:17,276 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:34:17,276 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:34:17,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:34:17,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:34:17,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:34:17,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:34:17,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:34:17,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:34:17,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:34:17,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:34:17,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:34:17,279 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2022-11-16 12:34:17,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:34:17,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:34:17,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:34:17,630 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:34:17,634 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:34:17,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-16 12:34:17,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data/5a4143f96/6b3c3f19ba0642449e75cca7cc86b6cf/FLAGff095bdcc [2022-11-16 12:34:18,364 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:34:18,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-16 12:34:18,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data/5a4143f96/6b3c3f19ba0642449e75cca7cc86b6cf/FLAGff095bdcc [2022-11-16 12:34:18,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data/5a4143f96/6b3c3f19ba0642449e75cca7cc86b6cf [2022-11-16 12:34:18,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:34:18,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:34:18,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:34:18,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:34:18,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:34:18,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:18" (1/1) ... [2022-11-16 12:34:18,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebb16f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:18, skipping insertion in model container [2022-11-16 12:34:18,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:18" (1/1) ... [2022-11-16 12:34:18,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:34:18,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:34:19,133 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-16 12:34:19,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:34:19,177 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 12:34:19,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a955310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:19, skipping insertion in model container [2022-11-16 12:34:19,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:34:19,179 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 12:34:19,182 INFO L158 Benchmark]: Toolchain (without parser) took 496.10ms. Allocated memory is still 134.2MB. Free memory was 95.4MB in the beginning and 108.5MB in the end (delta: -13.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:34:19,184 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:34:19,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.44ms. Allocated memory is still 134.2MB. Free memory was 95.3MB in the beginning and 108.5MB in the end (delta: -13.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:34:19,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.44ms. Allocated memory is still 134.2MB. Free memory was 95.3MB in the beginning and 108.5MB in the end (delta: -13.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 164]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8 --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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:34:21,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:34:21,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:34:21,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:34:21,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:34:21,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:34:21,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:34:21,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:34:21,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:34:21,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:34:21,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:34:21,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:34:21,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:34:21,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:34:21,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:34:21,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:34:21,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:34:21,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:34:21,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:34:21,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:34:21,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:34:21,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:34:21,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:34:21,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:34:21,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:34:21,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:34:21,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:34:21,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:34:21,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:34:21,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:34:21,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:34:21,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:34:21,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:34:21,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:34:21,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:34:21,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:34:21,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:34:21,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:34:21,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:34:21,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:34:21,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:34:21,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:34:21,912 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:34:21,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:34:21,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:34:21,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:34:21,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:34:21,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:34:21,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:34:21,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:34:21,917 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:34:21,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:34:21,917 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:34:21,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:34:21,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:34:21,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:34:21,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:34:21,919 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:34:21,919 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:34:21,919 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:34:21,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:34:21,920 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:34:21,920 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:34:21,921 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:34:21,921 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:34:21,921 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:34:21,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:34:21,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:34:21,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:34:21,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:34:21,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:34:21,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:34:21,923 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:34:21,923 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:34:21,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:34:21,924 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2022-11-16 12:34:22,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:34:22,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:34:22,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:34:22,463 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:34:22,468 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:34:22,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-16 12:34:22,568 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data/c8934cabb/e80e4b202f1d4c1fb0f7939720f6a7ef/FLAG4adf08768 [2022-11-16 12:34:23,336 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:34:23,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-16 12:34:23,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data/c8934cabb/e80e4b202f1d4c1fb0f7939720f6a7ef/FLAG4adf08768 [2022-11-16 12:34:23,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/data/c8934cabb/e80e4b202f1d4c1fb0f7939720f6a7ef [2022-11-16 12:34:23,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:34:23,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:34:23,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:34:23,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:34:23,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:34:23,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:23" (1/1) ... [2022-11-16 12:34:23,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddbba4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:23, skipping insertion in model container [2022-11-16 12:34:23,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:34:23" (1/1) ... [2022-11-16 12:34:23,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:34:23,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:34:23,949 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-16 12:34:23,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:34:24,006 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:34:24,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:34:24,082 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-16 12:34:24,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:34:24,117 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:34:24,189 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-16 12:34:24,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:34:24,254 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:34:24,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24 WrapperNode [2022-11-16 12:34:24,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:34:24,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:34:24,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:34:24,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:34:24,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,371 INFO L138 Inliner]: procedures = 29, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 340 [2022-11-16 12:34:24,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:34:24,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:34:24,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:34:24,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:34:24,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:34:24,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:34:24,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:34:24,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:34:24,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (1/1) ... [2022-11-16 12:34:24,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:34:24,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:34:24,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:34:24,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:34:24,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:34:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:34:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:34:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:34:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:34:24,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:34:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:34:24,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:34:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:34:24,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:34:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 12:34:24,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 12:34:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:34:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:34:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:34:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:34:24,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:34:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:34:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:34:24,604 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:34:24,817 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:34:24,822 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:34:26,273 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:34:26,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:34:26,864 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-16 12:34:26,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:34:26 BoogieIcfgContainer [2022-11-16 12:34:26,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:34:26,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:34:26,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:34:26,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:34:26,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:34:23" (1/3) ... [2022-11-16 12:34:26,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be4df28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:34:26, skipping insertion in model container [2022-11-16 12:34:26,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:34:24" (2/3) ... [2022-11-16 12:34:26,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be4df28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:34:26, skipping insertion in model container [2022-11-16 12:34:26,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:34:26" (3/3) ... [2022-11-16 12:34:26,893 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-11-16 12:34:26,918 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:34:26,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-11-16 12:34:26,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:34:27,133 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:34:27,196 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:34:27,220 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 299 transitions, 630 flow [2022-11-16 12:34:27,226 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 299 transitions, 630 flow [2022-11-16 12:34:27,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 299 transitions, 630 flow [2022-11-16 12:34:27,481 INFO L130 PetriNetUnfolder]: 22/295 cut-off events. [2022-11-16 12:34:27,481 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:34:27,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 295 events. 22/295 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 282 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 243. Up to 2 conditions per place. [2022-11-16 12:34:27,504 INFO L119 LiptonReduction]: Number of co-enabled transitions 4104 [2022-11-16 12:35:21,087 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 135 DAG size of output: 134 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:35:31,165 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 138 DAG size of output: 137 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:35:35,147 INFO L134 LiptonReduction]: Checked pairs total: 9014 [2022-11-16 12:35:35,148 INFO L136 LiptonReduction]: Total number of compositions: 309 [2022-11-16 12:35:35,157 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 81 transitions, 194 flow [2022-11-16 12:35:36,381 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15416 states, 14022 states have (on average 4.96954785337327) internal successors, (69683), 15415 states have internal predecessors, (69683), 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) [2022-11-16 12:35:36,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:36,481 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@424a71dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:36,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2022-11-16 12:35:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 15416 states, 14022 states have (on average 4.96954785337327) internal successors, (69683), 15415 states have internal predecessors, (69683), 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) [2022-11-16 12:35:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:35:36,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:36,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:35:36,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-16 12:35:36,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 46624, now seen corresponding path program 1 times [2022-11-16 12:35:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:35:36,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865916908] [2022-11-16 12:35:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:36,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:36,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:35:36,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:35:36,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:35:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:36,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:35:36,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:37,294 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-16 12:35:37,295 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-16 12:35:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:37,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:37,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:35:37,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865916908] [2022-11-16 12:35:37,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865916908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:37,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:37,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:35:37,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997403827] [2022-11-16 12:35:37,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:37,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:35:37,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:35:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:35:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:37,591 INFO L87 Difference]: Start difference. First operand has 15416 states, 14022 states have (on average 4.96954785337327) internal successors, (69683), 15415 states have internal predecessors, (69683), 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 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) [2022-11-16 12:35:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:39,953 INFO L93 Difference]: Finished difference Result 24746 states and 111712 transitions. [2022-11-16 12:35:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:39,957 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 [2022-11-16 12:35:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:40,578 INFO L225 Difference]: With dead ends: 24746 [2022-11-16 12:35:40,592 INFO L226 Difference]: Without dead ends: 24746 [2022-11-16 12:35:40,593 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:35:40,597 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 64 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:40,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 12 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:35:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24746 states. [2022-11-16 12:35:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24746 to 12378. [2022-11-16 12:35:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12378 states, 11371 states have (on average 4.913288189253364) internal successors, (55869), 12377 states have internal predecessors, (55869), 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) [2022-11-16 12:35:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12378 states to 12378 states and 55869 transitions. [2022-11-16 12:35:42,411 INFO L78 Accepts]: Start accepts. Automaton has 12378 states and 55869 transitions. Word has length 2 [2022-11-16 12:35:42,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:42,411 INFO L495 AbstractCegarLoop]: Abstraction has 12378 states and 55869 transitions. [2022-11-16 12:35:42,412 INFO L496 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) [2022-11-16 12:35:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12378 states and 55869 transitions. [2022-11-16 12:35:42,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 12:35:42,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:42,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 12:35:42,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:42,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:42,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-16 12:35:42,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:42,631 INFO L85 PathProgramCache]: Analyzing trace with hash 46626, now seen corresponding path program 1 times [2022-11-16 12:35:42,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:35:42,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142030102] [2022-11-16 12:35:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:42,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:42,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:35:42,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:35:42,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:35:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:42,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:35:42,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:42,963 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-16 12:35:42,964 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-16 12:35:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:42,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:42,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:35:42,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142030102] [2022-11-16 12:35:42,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142030102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:42,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:42,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:35:42,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359997395] [2022-11-16 12:35:42,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:42,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:35:42,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:35:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:35:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:43,000 INFO L87 Difference]: Start difference. First operand 12378 states and 55869 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) [2022-11-16 12:35:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:43,935 INFO L93 Difference]: Finished difference Result 12375 states and 55863 transitions. [2022-11-16 12:35:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:43,936 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 [2022-11-16 12:35:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:44,063 INFO L225 Difference]: With dead ends: 12375 [2022-11-16 12:35:44,064 INFO L226 Difference]: Without dead ends: 12375 [2022-11-16 12:35:44,064 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:35:44,066 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:44,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 6 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:35:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12375 states. [2022-11-16 12:35:44,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12375 to 12375. [2022-11-16 12:35:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12375 states, 11371 states have (on average 4.912760531175798) internal successors, (55863), 12374 states have internal predecessors, (55863), 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) [2022-11-16 12:35:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12375 states to 12375 states and 55863 transitions. [2022-11-16 12:35:45,036 INFO L78 Accepts]: Start accepts. Automaton has 12375 states and 55863 transitions. Word has length 2 [2022-11-16 12:35:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:45,037 INFO L495 AbstractCegarLoop]: Abstraction has 12375 states and 55863 transitions. [2022-11-16 12:35:45,037 INFO L496 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) [2022-11-16 12:35:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 12375 states and 55863 transitions. [2022-11-16 12:35:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:35:45,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:45,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:35:45,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:45,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:45,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-16 12:35:45,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:45,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1453404, now seen corresponding path program 1 times [2022-11-16 12:35:45,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:35:45,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167316359] [2022-11-16 12:35:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:45,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:45,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:35:45,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:35:45,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:35:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:45,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:35:45,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:45,957 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-16 12:35:45,958 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-16 12:35:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:46,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:46,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:35:46,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167316359] [2022-11-16 12:35:46,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167316359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:46,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:35:46,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 12:35:46,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726752068] [2022-11-16 12:35:46,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:46,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:35:46,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:35:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:35:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:35:46,427 INFO L87 Difference]: Start difference. First operand 12375 states and 55863 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-16 12:35:47,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:35:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:50,664 INFO L93 Difference]: Finished difference Result 37114 states and 167573 transitions. [2022-11-16 12:35:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:35:50,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 [2022-11-16 12:35:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:51,383 INFO L225 Difference]: With dead ends: 37114 [2022-11-16 12:35:51,383 INFO L226 Difference]: Without dead ends: 37114 [2022-11-16 12:35:51,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:35:51,395 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 369 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:51,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 24 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 12:35:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37114 states. [2022-11-16 12:35:52,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37114 to 12384. [2022-11-16 12:35:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12384 states, 11380 states have (on average 4.910984182776802) internal successors, (55887), 12383 states have internal predecessors, (55887), 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) [2022-11-16 12:35:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12384 states to 12384 states and 55887 transitions. [2022-11-16 12:35:52,777 INFO L78 Accepts]: Start accepts. Automaton has 12384 states and 55887 transitions. Word has length 3 [2022-11-16 12:35:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:52,778 INFO L495 AbstractCegarLoop]: Abstraction has 12384 states and 55887 transitions. [2022-11-16 12:35:52,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-16 12:35:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 12384 states and 55887 transitions. [2022-11-16 12:35:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:35:52,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:52,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:35:52,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:52,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:53,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-16 12:35:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:53,001 INFO L85 PathProgramCache]: Analyzing trace with hash 45126222, now seen corresponding path program 1 times [2022-11-16 12:35:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:35:53,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069882266] [2022-11-16 12:35:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:53,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:53,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:35:53,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:35:53,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:35:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:53,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:35:53,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:53,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:53,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:53,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:53,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:53,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:53,564 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-16 12:35:53,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2022-11-16 12:35:53,668 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-16 12:35:53,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 88 [2022-11-16 12:35:53,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:53,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:35:53,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:53,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:35:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:53,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:53,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:35:53,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069882266] [2022-11-16 12:35:53,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069882266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:53,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:53,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:35:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037183426] [2022-11-16 12:35:53,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:53,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:53,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:35:53,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:53,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:53,961 INFO L87 Difference]: Start difference. First operand 12384 states and 55887 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-16 12:35:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:54,715 INFO L93 Difference]: Finished difference Result 10079 states and 44362 transitions. [2022-11-16 12:35:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:54,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-16 12:35:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:54,788 INFO L225 Difference]: With dead ends: 10079 [2022-11-16 12:35:54,788 INFO L226 Difference]: Without dead ends: 10079 [2022-11-16 12:35:54,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:54,789 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 130 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:54,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 2 Unchecked, 0.5s Time] [2022-11-16 12:35:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10079 states. [2022-11-16 12:35:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10079 to 10079. [2022-11-16 12:35:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10079 states, 9301 states have (on average 4.7695946672400815) internal successors, (44362), 10078 states have internal predecessors, (44362), 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) [2022-11-16 12:35:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10079 states to 10079 states and 44362 transitions. [2022-11-16 12:35:55,467 INFO L78 Accepts]: Start accepts. Automaton has 10079 states and 44362 transitions. Word has length 4 [2022-11-16 12:35:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:55,468 INFO L495 AbstractCegarLoop]: Abstraction has 10079 states and 44362 transitions. [2022-11-16 12:35:55,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-16 12:35:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 10079 states and 44362 transitions. [2022-11-16 12:35:55,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:35:55,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:55,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:35:55,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:55,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:55,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-16 12:35:55,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:55,694 INFO L85 PathProgramCache]: Analyzing trace with hash 45126224, now seen corresponding path program 1 times [2022-11-16 12:35:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:35:55,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228569939] [2022-11-16 12:35:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:55,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:35:55,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:35:55,697 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:35:55,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:35:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:55,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:35:55,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:56,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:56,220 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-16 12:35:56,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-16 12:35:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:57,545 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-16 12:35:57,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-16 12:35:59,546 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-16 12:35:59,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 182 [2022-11-16 12:47:47,577 WARN L233 SmtUtils]: Spent 10.61m on a formula simplification. DAG size of input: 530 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:47:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:47,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:47:47,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:47:47,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228569939] [2022-11-16 12:47:47,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228569939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:47,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:47,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:47,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932779772] [2022-11-16 12:47:47,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:47,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:47:47,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:47:47,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:47:47,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-16 12:47:47,584 INFO L87 Difference]: Start difference. First operand 10079 states and 44362 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-16 12:47:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:48,170 INFO L93 Difference]: Finished difference Result 10081 states and 44366 transitions. [2022-11-16 12:47:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:47:48,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2022-11-16 12:47:48,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:48,252 INFO L225 Difference]: With dead ends: 10081 [2022-11-16 12:47:48,252 INFO L226 Difference]: Without dead ends: 10081 [2022-11-16 12:47:48,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 643.1s TimeCoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-16 12:47:48,254 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:48,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 118 Unchecked, 0.5s Time] [2022-11-16 12:47:48,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10081 states. [2022-11-16 12:47:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10081 to 10081. [2022-11-16 12:47:48,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10081 states, 9303 states have (on average 4.768999247554552) internal successors, (44366), 10080 states have internal predecessors, (44366), 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) [2022-11-16 12:47:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10081 states to 10081 states and 44366 transitions. [2022-11-16 12:47:48,712 INFO L78 Accepts]: Start accepts. Automaton has 10081 states and 44366 transitions. Word has length 4 [2022-11-16 12:47:48,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:48,712 INFO L495 AbstractCegarLoop]: Abstraction has 10081 states and 44366 transitions. [2022-11-16 12:47:48,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-16 12:47:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 10081 states and 44366 transitions. [2022-11-16 12:47:48,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:47:48,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:48,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:47:48,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:47:48,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:47:48,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-16 12:47:48,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1398880197, now seen corresponding path program 1 times [2022-11-16 12:47:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:47:48,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733678489] [2022-11-16 12:47:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:48,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:47:48,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:47:48,917 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:47:48,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:47:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:49,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:47:49,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:49,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:47:49,444 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-16 12:47:49,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-16 12:47:50,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:47:50,156 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:47:50,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-16 12:47:52,948 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-16 12:47:52,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 80 [2022-11-16 12:47:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:47:55,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:47:55,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:47:55,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733678489] [2022-11-16 12:47:55,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733678489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:55,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:55,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:55,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849226254] [2022-11-16 12:47:55,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:55,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:47:55,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:47:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:47:55,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-16 12:47:55,822 INFO L87 Difference]: Start difference. First operand 10081 states and 44366 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2022-11-16 12:47:56,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:56,388 INFO L93 Difference]: Finished difference Result 10086 states and 44377 transitions. [2022-11-16 12:47:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:47:56,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 [2022-11-16 12:47:56,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:56,463 INFO L225 Difference]: With dead ends: 10086 [2022-11-16 12:47:56,463 INFO L226 Difference]: Without dead ends: 10086 [2022-11-16 12:47:56,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-16 12:47:56,465 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:56,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 62 Unchecked, 0.5s Time] [2022-11-16 12:47:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10086 states. [2022-11-16 12:47:56,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10086 to 10085. [2022-11-16 12:47:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10085 states, 9307 states have (on average 4.767916621897497) internal successors, (44375), 10084 states have internal predecessors, (44375), 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) [2022-11-16 12:47:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10085 states to 10085 states and 44375 transitions. [2022-11-16 12:47:57,034 INFO L78 Accepts]: Start accepts. Automaton has 10085 states and 44375 transitions. Word has length 5 [2022-11-16 12:47:57,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:57,035 INFO L495 AbstractCegarLoop]: Abstraction has 10085 states and 44375 transitions. [2022-11-16 12:47:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2022-11-16 12:47:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 10085 states and 44375 transitions. [2022-11-16 12:47:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:47:57,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:57,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:47:57,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:47:57,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:47:57,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-16 12:47:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1398913088, now seen corresponding path program 1 times [2022-11-16 12:47:57,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:47:57,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722909522] [2022-11-16 12:47:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:57,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:47:57,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:47:57,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:47:57,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904ec409-3cd0-4e81-bb52-a25604715611/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:47:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:57,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:47:57,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:57,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:47:57,869 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-16 12:47:57,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-16 12:47:59,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:47:59,482 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-16 12:47:59,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-16 12:48:01,956 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-16 12:48:01,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 186