./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8e58f3efa83d983df9d3c91839b25c936a9f008 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8e58f3efa83d983df9d3c91839b25c936a9f008 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:44:48,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:44:48,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:44:48,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:44:48,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:44:48,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:44:48,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:44:48,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:44:48,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:44:48,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:44:48,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:44:48,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:44:48,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:44:48,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:44:48,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:44:48,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:44:48,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:44:48,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:44:48,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:44:48,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:44:48,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:44:48,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:44:48,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:44:48,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:44:48,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:44:48,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:44:48,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:44:48,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:44:48,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:44:48,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:44:48,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:44:48,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:44:48,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:44:48,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:44:48,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:44:48,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:44:48,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:44:48,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:44:48,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:44:48,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:44:48,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:44:48,949 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:44:48,997 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:44:48,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:44:48,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:44:49,000 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:44:49,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:44:49,000 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:44:49,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:44:49,001 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:44:49,007 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:44:49,008 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:44:49,009 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:44:49,009 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:44:49,010 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:44:49,010 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:44:49,010 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:44:49,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:44:49,011 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:44:49,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:44:49,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:44:49,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:44:49,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:44:49,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:44:49,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:44:49,013 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:44:49,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:44:49,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:44:49,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:44:49,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:44:49,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:44:49,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:44:49,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:44:49,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:44:49,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:44:49,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:44:49,018 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:44:49,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:44:49,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:44:49,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:44:49,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:44:49,019 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e58f3efa83d983df9d3c91839b25c936a9f008 [2021-10-16 02:44:49,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:44:49,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:44:49,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:44:49,360 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:44:49,361 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:44:49,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2021-10-16 02:44:49,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data/b388b4d46/3839741d646d4785a7b01ebb1d128787/FLAG43313aa32 [2021-10-16 02:44:49,962 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:44:49,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2021-10-16 02:44:49,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data/b388b4d46/3839741d646d4785a7b01ebb1d128787/FLAG43313aa32 [2021-10-16 02:44:50,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data/b388b4d46/3839741d646d4785a7b01ebb1d128787 [2021-10-16 02:44:50,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:44:50,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:44:50,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:50,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:44:50,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:44:50,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:50" (1/1) ... [2021-10-16 02:44:50,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd538a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:50, skipping insertion in model container [2021-10-16 02:44:50,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:50" (1/1) ... [2021-10-16 02:44:50,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:44:50,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:44:50,572 WARN L228 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_7607985b-fa36-4b3b-96cc-dfac5f024d54/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[2699,2712] [2021-10-16 02:44:50,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:50,596 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-16 02:44:50,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e1822cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:50, skipping insertion in model container [2021-10-16 02:44:50,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:50,599 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:44:50,601 INFO L168 Benchmark]: Toolchain (without parser) took 282.14 ms. Allocated memory is still 102.8 MB. Free memory was 60.8 MB in the beginning and 78.9 MB in the end (delta: -18.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:50,602 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 77.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:44:50,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.88 ms. Allocated memory is still 102.8 MB. Free memory was 60.6 MB in the beginning and 78.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:50,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 77.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.88 ms. Allocated memory is still 102.8 MB. Free memory was 60.6 MB in the beginning and 78.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 112]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:44:53,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:44:53,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:44:53,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:44:53,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:44:53,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:44:53,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:44:53,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:44:53,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:44:53,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:44:53,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:44:53,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:44:53,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:44:53,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:44:53,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:44:53,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:44:53,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:44:53,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:44:53,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:44:53,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:44:53,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:44:53,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:44:53,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:44:53,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:44:53,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:44:53,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:44:53,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:44:53,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:44:53,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:44:53,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:44:53,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:44:53,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:44:53,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:44:53,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:44:53,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:44:53,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:44:53,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:44:53,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:44:53,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:44:53,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:44:53,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:44:53,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:44:53,226 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:44:53,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:44:53,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:44:53,228 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:44:53,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:44:53,229 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:44:53,229 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:44:53,229 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:44:53,229 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:44:53,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:44:53,232 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:44:53,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:44:53,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:44:53,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:44:53,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:44:53,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:44:53,234 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:44:53,234 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:44:53,234 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:44:53,234 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:44:53,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:44:53,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:44:53,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:44:53,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:44:53,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:44:53,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:44:53,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:44:53,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:44:53,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:44:53,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:44:53,237 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:44:53,237 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:44:53,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:44:53,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:44:53,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:44:53,239 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_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e58f3efa83d983df9d3c91839b25c936a9f008 [2021-10-16 02:44:53,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:44:53,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:44:53,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:44:53,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:44:53,684 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:44:53,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2021-10-16 02:44:53,776 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data/7d642cbe6/77f3fa40d7b14b24aa12e00115b961ec/FLAG59d626a72 [2021-10-16 02:44:54,503 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:44:54,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2021-10-16 02:44:54,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data/7d642cbe6/77f3fa40d7b14b24aa12e00115b961ec/FLAG59d626a72 [2021-10-16 02:44:54,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/data/7d642cbe6/77f3fa40d7b14b24aa12e00115b961ec [2021-10-16 02:44:54,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:44:54,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:44:54,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:54,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:44:54,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:44:54,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:54" (1/1) ... [2021-10-16 02:44:54,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac0a3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:54, skipping insertion in model container [2021-10-16 02:44:54,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:54" (1/1) ... [2021-10-16 02:44:54,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:44:54,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:44:55,064 WARN L228 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_7607985b-fa36-4b3b-96cc-dfac5f024d54/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[2699,2712] [2021-10-16 02:44:55,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:55,111 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:44:55,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:44:55,155 WARN L228 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_7607985b-fa36-4b3b-96cc-dfac5f024d54/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[2699,2712] [2021-10-16 02:44:55,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:55,186 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:44:55,238 WARN L228 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_7607985b-fa36-4b3b-96cc-dfac5f024d54/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[2699,2712] [2021-10-16 02:44:55,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:55,267 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:44:55,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55 WrapperNode [2021-10-16 02:44:55,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:55,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:44:55,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:44:55,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:44:55,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:44:55,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:44:55,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:44:55,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:44:55,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:44:55,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:44:55,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:44:55,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:44:55,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (1/1) ... [2021-10-16 02:44:55,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:44:55,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:44:55,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:44:55,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:44:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:44:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:44:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-16 02:44:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-16 02:44:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-16 02:44:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-16 02:44:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-16 02:44:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-16 02:44:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-16 02:44:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-16 02:44:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:44:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:44:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:44:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:44:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:44:55,533 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 02:44:56,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:44:56,474 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-16 02:44:56,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:56 BoogieIcfgContainer [2021-10-16 02:44:56,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:44:56,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:44:56,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:44:56,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:44:56,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:44:54" (1/3) ... [2021-10-16 02:44:56,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133465bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:44:56, skipping insertion in model container [2021-10-16 02:44:56,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:55" (2/3) ... [2021-10-16 02:44:56,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133465bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:44:56, skipping insertion in model container [2021-10-16 02:44:56,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:56" (3/3) ... [2021-10-16 02:44:56,498 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2021-10-16 02:44:56,504 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-16 02:44:56,504 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:44:56,504 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:44:56,504 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 02:44:56,545 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,546 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,546 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,547 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,551 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,555 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,557 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,558 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,558 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,559 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,559 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,559 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,561 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,562 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,563 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,566 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,566 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,566 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,566 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,570 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,570 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,570 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,570 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,571 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,574 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,574 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,576 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,577 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,577 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,577 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,577 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,577 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,578 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,578 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 02:44:56,585 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-16 02:44:56,636 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:44:56,643 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:44:56,643 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 02:44:56,660 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-16 02:44:56,673 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 135 transitions, 294 flow [2021-10-16 02:44:56,676 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 135 transitions, 294 flow [2021-10-16 02:44:56,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 134 places, 135 transitions, 294 flow [2021-10-16 02:44:56,769 INFO L129 PetriNetUnfolder]: 11/132 cut-off events. [2021-10-16 02:44:56,771 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-16 02:44:56,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 11/132 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 104. Up to 3 conditions per place. [2021-10-16 02:44:56,786 INFO L116 LiptonReduction]: Number of co-enabled transitions 918 [2021-10-16 02:45:10,637 INFO L131 LiptonReduction]: Checked pairs total: 2102 [2021-10-16 02:45:10,637 INFO L133 LiptonReduction]: Total number of compositions: 129 [2021-10-16 02:45:10,645 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-10-16 02:45:10,672 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 157 states, 156 states have (on average 2.8076923076923075) internal successors, (438), 156 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 156 states have (on average 2.8076923076923075) internal successors, (438), 156 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:45:10,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:45:10,689 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:45:10,689 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:45:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:45:10,697 INFO L82 PathProgramCache]: Analyzing trace with hash -2041615262, now seen corresponding path program 1 times [2021-10-16 02:45:10,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:45:10,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783791558] [2021-10-16 02:45:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:45:10,717 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:45:10,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:45:10,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:45:10,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:45:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:45:10,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:45:10,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:45:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:45:11,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:45:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:45:11,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:45:11,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783791558] [2021-10-16 02:45:11,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783791558] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:45:11,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:45:11,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:45:11,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453242867] [2021-10-16 02:45:11,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:45:11,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:45:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:45:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:45:11,425 INFO L87 Difference]: Start difference. First operand has 157 states, 156 states have (on average 2.8076923076923075) internal successors, (438), 156 states have internal predecessors, (438), 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 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:45:11,557 INFO L93 Difference]: Finished difference Result 292 states and 780 transitions. [2021-10-16 02:45:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:45:11,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 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 19 [2021-10-16 02:45:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:45:11,573 INFO L225 Difference]: With dead ends: 292 [2021-10-16 02:45:11,573 INFO L226 Difference]: Without dead ends: 181 [2021-10-16 02:45:11,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:45:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-16 02:45:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-10-16 02:45:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.6) internal successors, (468), 180 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 468 transitions. [2021-10-16 02:45:11,630 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 468 transitions. Word has length 19 [2021-10-16 02:45:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:45:11,631 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 468 transitions. [2021-10-16 02:45:11,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 468 transitions. [2021-10-16 02:45:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:45:11,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:45:11,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:45:11,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:45:11,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:45:11,848 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:45:11,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:45:11,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1212363820, now seen corresponding path program 1 times [2021-10-16 02:45:11,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:45:11,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426529589] [2021-10-16 02:45:11,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:45:11,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:45:11,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:45:11,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:45:11,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:45:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:45:11,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:45:12,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:45:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:45:12,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:45:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:45:12,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:45:12,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426529589] [2021-10-16 02:45:12,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426529589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:45:12,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:45:12,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:45:12,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951877999] [2021-10-16 02:45:12,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:45:12,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:45:12,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:45:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:45:12,329 INFO L87 Difference]: Start difference. First operand 181 states and 468 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:45:12,366 INFO L93 Difference]: Finished difference Result 205 states and 505 transitions. [2021-10-16 02:45:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:45:12,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 22 [2021-10-16 02:45:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:45:12,374 INFO L225 Difference]: With dead ends: 205 [2021-10-16 02:45:12,374 INFO L226 Difference]: Without dead ends: 185 [2021-10-16 02:45:12,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:45:12,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-16 02:45:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-10-16 02:45:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.510869565217391) internal successors, (462), 184 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 462 transitions. [2021-10-16 02:45:12,401 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 462 transitions. Word has length 22 [2021-10-16 02:45:12,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:45:12,402 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 462 transitions. [2021-10-16 02:45:12,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 462 transitions. [2021-10-16 02:45:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:45:12,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:45:12,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:45:12,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:45:12,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:45:12,629 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:45:12,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:45:12,629 INFO L82 PathProgramCache]: Analyzing trace with hash 729685250, now seen corresponding path program 1 times [2021-10-16 02:45:12,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:45:12,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461604459] [2021-10-16 02:45:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:45:12,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:45:12,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:45:12,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:45:12,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:45:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:45:12,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:45:12,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:45:13,276 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-16 02:45:13,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-10-16 02:45:13,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:45:13,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:45:14,085 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-16 02:45:14,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2021-10-16 02:45:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:45:30,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:45:30,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461604459] [2021-10-16 02:45:30,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461604459] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:45:30,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [523976466] [2021-10-16 02:45:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:45:30,296 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:45:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:45:30,308 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:45:30,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:45:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:45:30,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:45:30,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:45:30,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:45:30,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:45:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:45:31,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [523976466] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:45:31,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:45:31,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9, 9] total 20 [2021-10-16 02:45:31,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573533523] [2021-10-16 02:45:31,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:45:31,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:45:31,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:45:31,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:45:31,029 INFO L87 Difference]: Start difference. First operand 185 states and 462 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:31,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:45:31,162 INFO L93 Difference]: Finished difference Result 229 states and 550 transitions. [2021-10-16 02:45:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:45:31,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 24 [2021-10-16 02:45:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:45:31,166 INFO L225 Difference]: With dead ends: 229 [2021-10-16 02:45:31,166 INFO L226 Difference]: Without dead ends: 186 [2021-10-16 02:45:31,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1344.0ms TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:45:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-16 02:45:31,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-10-16 02:45:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.502702702702703) internal successors, (463), 185 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:31,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 463 transitions. [2021-10-16 02:45:31,181 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 463 transitions. Word has length 24 [2021-10-16 02:45:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:45:31,181 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 463 transitions. [2021-10-16 02:45:31,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:45:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 463 transitions. [2021-10-16 02:45:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:45:31,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:45:31,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:45:31,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:45:31,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-16 02:45:31,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:45:31,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 02:45:31,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:45:31,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1588744308, now seen corresponding path program 1 times [2021-10-16 02:45:31,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:45:31,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934955813] [2021-10-16 02:45:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:45:31,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:45:31,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:45:31,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:45:31,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:45:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:45:31,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:45:31,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:45:32,174 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-16 02:45:32,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-10-16 02:45:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:45:32,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:45:32,947 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-16 02:45:32,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2021-10-16 02:45:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:45:49,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:45:49,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934955813] [2021-10-16 02:45:49,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934955813] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:45:49,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [520447282] [2021-10-16 02:45:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:45:49,294 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:45:49,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:45:49,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:45:49,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 02:45:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:45:49,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-16 02:45:49,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:45:50,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:50,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:50,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:50,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:50,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:50,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:50,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 39 [2021-10-16 02:45:52,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:52,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:52,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:52,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:52,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:52,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:52,798 INFO L354 Elim1Store]: treesize reduction 923, result has 6.4 percent of original size [2021-10-16 02:45:52,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 81 treesize of output 101 [2021-10-16 02:45:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:57,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:57,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:57,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:57,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:45:57,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:48:10,041 WARN L207 SmtUtils]: Spent 2.21 m on a formula simplification. DAG size of input: 347 DAG size of output: 117 [2021-10-16 02:48:10,043 INFO L354 Elim1Store]: treesize reduction 1702, result has 18.4 percent of original size [2021-10-16 02:48:10,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 119 treesize of output 438 [2021-10-16 02:56:04,803 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-16 02:56:04,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-16 02:56:04,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-16 02:56:04,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153430944] [2021-10-16 02:56:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:04,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:04,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:04,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:04,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 02:56:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:05,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-16 02:56:05,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:05,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:56:05,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:56:05,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-16 02:56:05,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546529765] [2021-10-16 02:56:05,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-16 02:56:05,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:56:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-16 02:56:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:56:05,286 INFO L87 Difference]: Start difference. First operand 186 states and 463 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:05,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-16 02:56:05,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 02:56:05,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-16 02:56:05,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:56:05,888 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:432) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-16 02:56:05,891 INFO L168 Benchmark]: Toolchain (without parser) took 671086.03 ms. Allocated memory was 71.3 MB in the beginning and 130.0 MB in the end (delta: 58.7 MB). Free memory was 55.3 MB in the beginning and 37.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:05,892 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 71.3 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:05,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.00 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 42.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:05,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.23 ms. Allocated memory is still 71.3 MB. Free memory was 42.1 MB in the beginning and 40.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:05,894 INFO L168 Benchmark]: Boogie Preprocessor took 87.89 ms. Allocated memory is still 71.3 MB. Free memory was 40.2 MB in the beginning and 38.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:05,894 INFO L168 Benchmark]: RCFGBuilder took 1051.79 ms. Allocated memory is still 71.3 MB. Free memory was 38.5 MB in the beginning and 43.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:05,895 INFO L168 Benchmark]: TraceAbstraction took 669410.67 ms. Allocated memory was 71.3 MB in the beginning and 130.0 MB in the end (delta: 58.7 MB). Free memory was 43.2 MB in the beginning and 37.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 63.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:05,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 71.3 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 460.00 ms. Allocated memory is still 71.3 MB. Free memory was 55.1 MB in the beginning and 42.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.23 ms. Allocated memory is still 71.3 MB. Free memory was 42.1 MB in the beginning and 40.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.89 ms. Allocated memory is still 71.3 MB. Free memory was 40.2 MB in the beginning and 38.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1051.79 ms. Allocated memory is still 71.3 MB. Free memory was 38.5 MB in the beginning and 43.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 669410.67 ms. Allocated memory was 71.3 MB in the beginning and 130.0 MB in the end (delta: 58.7 MB). Free memory was 43.2 MB in the beginning and 37.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 63.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13961.6ms, 134 PlacesBefore, 36 PlacesAfterwards, 135 TransitionsBefore, 29 TransitionsAfterwards, 918 CoEnabledTransitionPairs, 7 FixpointIterations, 82 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 129 TotalNumberOfCompositions, 2102 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1494, positive: 1397, positive conditional: 0, positive unconditional: 1397, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 707, positive: 679, positive conditional: 0, positive unconditional: 679, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 707, positive: 678, positive conditional: 0, positive unconditional: 678, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 479, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 445, negative conditional: 0, negative unconditional: 445, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1494, positive: 718, positive conditional: 0, positive unconditional: 718, negative: 69, negative conditional: 0, negative unconditional: 69, unknown: 707, unknown conditional: 0, unknown unconditional: 707] , Statistics on independence cache: Total cache size (in pairs): 98, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7607985b-fa36-4b3b-96cc-dfac5f024d54/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...