./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 21:28:03,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:28:03,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:28:03,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:28:03,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:28:03,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:28:03,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:28:03,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:28:03,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:28:03,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:28:03,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:28:03,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:28:03,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:28:03,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:28:03,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:28:03,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:28:03,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:28:03,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:28:03,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:28:03,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:28:03,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:28:03,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:28:03,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:28:03,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:28:03,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:28:03,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:28:03,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:28:03,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:28:03,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:28:03,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:28:03,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:28:03,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:28:03,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:28:03,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:28:03,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:28:03,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:28:03,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:28:03,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:28:03,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:28:03,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:28:03,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:28:03,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-20 21:28:03,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:28:03,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:28:03,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:28:03,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:28:03,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:28:03,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:28:03,731 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:28:03,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:28:03,731 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:28:03,731 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:28:03,733 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:28:03,733 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:28:03,733 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:28:03,734 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:28:03,734 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:28:03,734 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:28:03,734 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:28:03,735 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:28:03,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:28:03,736 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:28:03,736 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 21:28:03,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:28:03,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:28:03,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:28:03,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:28:03,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:28:03,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:28:03,739 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 21:28:03,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:28:03,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:28:03,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:28:03,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:28:03,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:28:03,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:28:03,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:28:03,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:28:03,742 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:28:03,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:28:03,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:28:03,743 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:28:03,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:28:03,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:28:03,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:28:03,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 [2022-11-20 21:28:04,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:28:04,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:28:04,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:28:04,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:28:04,084 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:28:04,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-11-20 21:28:07,172 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:28:07,436 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:28:07,437 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-11-20 21:28:07,446 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/data/cb5d5990b/f9719351a61d498fb4e1d3ebfdab8a4c/FLAG674a79dda [2022-11-20 21:28:07,464 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/data/cb5d5990b/f9719351a61d498fb4e1d3ebfdab8a4c [2022-11-20 21:28:07,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:28:07,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:28:07,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:28:07,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:28:07,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:28:07,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af50b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07, skipping insertion in model container [2022-11-20 21:28:07,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:28:07,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:28:07,775 WARN L237 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_f09282e6-0980-4605-83b4-8f4595c15350/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-11-20 21:28:07,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:28:07,794 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:28:07,830 WARN L237 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_f09282e6-0980-4605-83b4-8f4595c15350/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-11-20 21:28:07,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:28:07,851 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:28:07,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07 WrapperNode [2022-11-20 21:28:07,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:28:07,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:28:07,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:28:07,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:28:07,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,911 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 218 [2022-11-20 21:28:07,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:28:07,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:28:07,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:28:07,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:28:07,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:28:07,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:28:07,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:28:07,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:28:07,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (1/1) ... [2022-11-20 21:28:07,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:28:07,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:28:08,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:28:08,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:28:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:28:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 21:28:08,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 21:28:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 21:28:08,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 21:28:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 21:28:08,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 21:28:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:28:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:28:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:28:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:28:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:28:08,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:28:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:28:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:28:08,060 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 21:28:08,190 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:28:08,192 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:28:09,148 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:28:09,161 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:28:09,162 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 21:28:09,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:09 BoogieIcfgContainer [2022-11-20 21:28:09,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:28:09,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:28:09,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:28:09,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:28:09,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:07" (1/3) ... [2022-11-20 21:28:09,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab8ddec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:09, skipping insertion in model container [2022-11-20 21:28:09,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:07" (2/3) ... [2022-11-20 21:28:09,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab8ddec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:09, skipping insertion in model container [2022-11-20 21:28:09,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:09" (3/3) ... [2022-11-20 21:28:09,182 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-11-20 21:28:09,196 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 21:28:09,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:28:09,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-11-20 21:28:09,210 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 21:28:09,348 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 21:28:09,462 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 21:28:09,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 383 transitions, 790 flow [2022-11-20 21:28:09,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 383 transitions, 790 flow [2022-11-20 21:28:09,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 383 transitions, 790 flow [2022-11-20 21:28:09,662 INFO L130 PetriNetUnfolder]: 19/380 cut-off events. [2022-11-20 21:28:09,662 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 21:28:09,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 380 events. 19/380 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 514 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 256. Up to 2 conditions per place. [2022-11-20 21:28:09,679 INFO L119 LiptonReduction]: Number of co-enabled transitions 12972 [2022-11-20 21:28:25,474 INFO L134 LiptonReduction]: Checked pairs total: 92111 [2022-11-20 21:28:25,475 INFO L136 LiptonReduction]: Total number of compositions: 379 [2022-11-20 21:28:25,484 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 125 transitions, 274 flow [2022-11-20 21:28:30,361 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 98377 states, 97809 states have (on average 3.9766585897003344) internal successors, (388953), 98376 states have internal predecessors, (388953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:30,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:28:30,418 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@19d391f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:28:30,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-11-20 21:28:30,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 98377 states, 97809 states have (on average 3.9766585897003344) internal successors, (388953), 98376 states have internal predecessors, (388953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:30,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 21:28:30,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:28:30,566 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 21:28:30,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-11-20 21:28:30,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:28:30,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1366, now seen corresponding path program 1 times [2022-11-20 21:28:30,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:28:30,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748722045] [2022-11-20 21:28:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:28:30,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:28:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:28:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:28:30,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:28:30,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748722045] [2022-11-20 21:28:30,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748722045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:28:30,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:28:30,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 21:28:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421426178] [2022-11-20 21:28:30,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:28:30,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:28:30,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:28:30,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:28:30,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:28:30,987 INFO L87 Difference]: Start difference. First operand has 98377 states, 97809 states have (on average 3.9766585897003344) internal successors, (388953), 98376 states have internal predecessors, (388953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:28:32,746 INFO L93 Difference]: Finished difference Result 61725 states and 235509 transitions. [2022-11-20 21:28:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:28:32,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-20 21:28:32,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:28:33,616 INFO L225 Difference]: With dead ends: 61725 [2022-11-20 21:28:33,617 INFO L226 Difference]: Without dead ends: 61723 [2022-11-20 21:28:33,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:28:33,624 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:28:33,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:28:34,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61723 states. [2022-11-20 21:28:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61723 to 61723. [2022-11-20 21:28:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61723 states, 61658 states have (on average 3.819553018262026) internal successors, (235506), 61722 states have internal predecessors, (235506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61723 states to 61723 states and 235506 transitions. [2022-11-20 21:28:37,761 INFO L78 Accepts]: Start accepts. Automaton has 61723 states and 235506 transitions. Word has length 1 [2022-11-20 21:28:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:28:37,761 INFO L495 AbstractCegarLoop]: Abstraction has 61723 states and 235506 transitions. [2022-11-20 21:28:37,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 61723 states and 235506 transitions. [2022-11-20 21:28:37,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 21:28:37,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:28:37,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:28:37,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:28:37,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-11-20 21:28:37,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:28:37,770 INFO L85 PathProgramCache]: Analyzing trace with hash 460094362, now seen corresponding path program 1 times [2022-11-20 21:28:37,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:28:37,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433282541] [2022-11-20 21:28:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:28:37,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:28:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:28:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:28:39,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:28:39,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433282541] [2022-11-20 21:28:39,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433282541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:28:39,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:28:39,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:28:39,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810859253] [2022-11-20 21:28:39,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:28:39,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:28:39,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:28:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:28:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:28:39,024 INFO L87 Difference]: Start difference. First operand 61723 states and 235506 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:41,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:28:41,323 INFO L93 Difference]: Finished difference Result 101010 states and 382078 transitions. [2022-11-20 21:28:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:28:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2022-11-20 21:28:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:28:42,183 INFO L225 Difference]: With dead ends: 101010 [2022-11-20 21:28:42,184 INFO L226 Difference]: Without dead ends: 101010 [2022-11-20 21:28:42,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:28:42,186 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 163 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:28:42,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 122 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 21:28:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101010 states. [2022-11-20 21:28:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101010 to 90593. [2022-11-20 21:28:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90593 states, 90528 states have (on average 3.8770987981618945) internal successors, (350986), 90592 states have internal predecessors, (350986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90593 states to 90593 states and 350986 transitions. [2022-11-20 21:28:46,924 INFO L78 Accepts]: Start accepts. Automaton has 90593 states and 350986 transitions. Word has length 14 [2022-11-20 21:28:46,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:28:46,925 INFO L495 AbstractCegarLoop]: Abstraction has 90593 states and 350986 transitions. [2022-11-20 21:28:46,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 90593 states and 350986 transitions. [2022-11-20 21:28:46,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 21:28:46,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:28:46,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:28:46,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:28:46,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-11-20 21:28:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:28:46,932 INFO L85 PathProgramCache]: Analyzing trace with hash -812782674, now seen corresponding path program 1 times [2022-11-20 21:28:46,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:28:46,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755577464] [2022-11-20 21:28:46,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:28:46,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:28:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:28:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:28:47,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:28:47,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755577464] [2022-11-20 21:28:47,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755577464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:28:47,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:28:47,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 21:28:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285876437] [2022-11-20 21:28:47,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:28:47,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:28:47,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:28:47,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:28:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:28:47,328 INFO L87 Difference]: Start difference. First operand 90593 states and 350986 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:49,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:28:49,739 INFO L93 Difference]: Finished difference Result 117997 states and 458126 transitions. [2022-11-20 21:28:49,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:28:49,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2022-11-20 21:28:49,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:28:51,123 INFO L225 Difference]: With dead ends: 117997 [2022-11-20 21:28:51,123 INFO L226 Difference]: Without dead ends: 117997 [2022-11-20 21:28:51,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:28:51,124 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 122 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:28:51,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 120 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 21:28:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117997 states. [2022-11-20 21:28:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117997 to 108853. [2022-11-20 21:28:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108853 states, 108788 states have (on average 3.882578960914807) internal successors, (422378), 108852 states have internal predecessors, (422378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108853 states to 108853 states and 422378 transitions. [2022-11-20 21:28:56,055 INFO L78 Accepts]: Start accepts. Automaton has 108853 states and 422378 transitions. Word has length 14 [2022-11-20 21:28:56,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:28:56,055 INFO L495 AbstractCegarLoop]: Abstraction has 108853 states and 422378 transitions. [2022-11-20 21:28:56,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:56,056 INFO L276 IsEmpty]: Start isEmpty. Operand 108853 states and 422378 transitions. [2022-11-20 21:28:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 21:28:56,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:28:56,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:28:56,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:28:56,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-11-20 21:28:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:28:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash -499057022, now seen corresponding path program 1 times [2022-11-20 21:28:56,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:28:56,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420725537] [2022-11-20 21:28:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:28:56,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:28:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:28:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:28:56,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:28:56,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420725537] [2022-11-20 21:28:56,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420725537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:28:56,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:28:56,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:28:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494191001] [2022-11-20 21:28:56,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:28:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:28:56,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:28:56,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:28:56,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:28:56,262 INFO L87 Difference]: Start difference. First operand 108853 states and 422378 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:28:57,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:28:57,148 INFO L93 Difference]: Finished difference Result 108857 states and 422383 transitions. [2022-11-20 21:28:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:28:57,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2022-11-20 21:28:57,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:28:58,865 INFO L225 Difference]: With dead ends: 108857 [2022-11-20 21:28:58,866 INFO L226 Difference]: Without dead ends: 108855 [2022-11-20 21:28:58,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:28:58,871 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 2 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:28:58,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 171 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:28:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108855 states. [2022-11-20 21:29:02,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108855 to 108855. [2022-11-20 21:29:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108855 states, 108790 states have (on average 3.8825259674602446) internal successors, (422380), 108854 states have internal predecessors, (422380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:29:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108855 states to 108855 states and 422380 transitions. [2022-11-20 21:29:02,878 INFO L78 Accepts]: Start accepts. Automaton has 108855 states and 422380 transitions. Word has length 16 [2022-11-20 21:29:02,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:29:02,879 INFO L495 AbstractCegarLoop]: Abstraction has 108855 states and 422380 transitions. [2022-11-20 21:29:02,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:29:02,879 INFO L276 IsEmpty]: Start isEmpty. Operand 108855 states and 422380 transitions. [2022-11-20 21:29:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 21:29:02,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:29:02,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:29:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:29:02,882 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2022-11-20 21:29:02,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:29:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash -30994305, now seen corresponding path program 1 times [2022-11-20 21:29:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:29:02,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605807026] [2022-11-20 21:29:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:29:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:29:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:29:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:29:03,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:29:03,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605807026] [2022-11-20 21:29:03,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605807026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:29:03,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427063270] [2022-11-20 21:29:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:29:03,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:29:03,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:29:03,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:29:03,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f09282e6-0980-4605-83b4-8f4595c15350/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:29:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:29:03,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 21:29:03,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:29:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:29:03,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:29:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:29:03,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427063270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:29:03,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122799243] [2022-11-20 21:29:03,541 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-20 21:29:03,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:29:03,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-20 21:29:03,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128952109] [2022-11-20 21:29:03,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:29:03,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 21:29:03,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:29:03,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 21:29:03,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-20 21:29:03,546 INFO L87 Difference]: Start difference. First operand 108855 states and 422380 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:29:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:29:05,932 INFO L93 Difference]: Finished difference Result 153940 states and 585583 transitions. [2022-11-20 21:29:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 21:29:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 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 18 [2022-11-20 21:29:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:29:07,691 INFO L225 Difference]: With dead ends: 153940 [2022-11-20 21:29:07,691 INFO L226 Difference]: Without dead ends: 153940 [2022-11-20 21:29:07,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-20 21:29:07,692 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 957 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:29:07,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 734 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 21:29:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153940 states. [2022-11-20 21:29:11,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153940 to 125654. [2022-11-20 21:29:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125654 states, 125589 states have (on average 3.8821393593387956) internal successors, (487554), 125653 states have internal predecessors, (487554), 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)