./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:32:20,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:32:20,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:32:20,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:32:20,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:32:20,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:32:20,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:32:20,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:32:20,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:32:20,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:32:20,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:32:20,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:32:20,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:32:20,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:32:20,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:32:20,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:32:20,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:32:20,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:32:20,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:32:20,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:32:20,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:32:20,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:32:20,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:32:20,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:32:20,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:32:20,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:32:20,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:32:20,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:32:20,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:32:20,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:32:20,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:32:20,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:32:20,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:32:20,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:32:20,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:32:20,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:32:20,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:32:20,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:32:20,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:32:20,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:32:20,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:32:21,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:32:21,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:32:21,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:32:21,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:32:21,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:32:21,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:32:21,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:32:21,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:32:21,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:32:21,052 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:32:21,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:32:21,053 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:32:21,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:32:21,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:32:21,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:32:21,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:32:21,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:32:21,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:32:21,055 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:32:21,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:32:21,055 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:32:21,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:32:21,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:32:21,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:32:21,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:32:21,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:21,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:32:21,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:32:21,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:32:21,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:32:21,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:32:21,060 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:32:21,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:32:21,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:32:21,061 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_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 [2022-11-16 12:32:21,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:32:21,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:32:21,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:32:21,442 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:32:21,443 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:32:21,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-16 12:32:21,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/data/354a1afce/17b4f0995b734a749e5ce39ba9e9ff04/FLAG7c3ab1525 [2022-11-16 12:32:22,193 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:32:22,194 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-16 12:32:22,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/data/354a1afce/17b4f0995b734a749e5ce39ba9e9ff04/FLAG7c3ab1525 [2022-11-16 12:32:22,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/data/354a1afce/17b4f0995b734a749e5ce39ba9e9ff04 [2022-11-16 12:32:22,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:32:22,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:32:22,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:22,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:32:22,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:32:22,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:22,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5868872b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22, skipping insertion in model container [2022-11-16 12:32:22,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:22,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:32:22,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:32:22,879 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-16 12:32:22,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:22,897 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:32:22,923 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-16 12:32:22,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:22,942 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:32:22,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22 WrapperNode [2022-11-16 12:32:22,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:22,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:22,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:32:22,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:32:22,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:22,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:22,995 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 275 [2022-11-16 12:32:22,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:22,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:32:22,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:32:22,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:32:23,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:23,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:23,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:23,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:23,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:23,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:23,028 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:23,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:23,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:32:23,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:32:23,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:32:23,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:32:23,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (1/1) ... [2022-11-16 12:32:23,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:23,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:23,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:32:23,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:32:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:32:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:32:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:32:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:32:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:32:23,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:32:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:32:23,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:32:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:32:23,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:32:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:32:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:32:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:32:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:32:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:32:23,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:32:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:32:23,156 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:32:23,284 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:32:23,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:32:23,882 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:32:24,084 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:32:24,084 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-16 12:32:24,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:24 BoogieIcfgContainer [2022-11-16 12:32:24,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:32:24,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:32:24,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:32:24,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:32:24,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:32:22" (1/3) ... [2022-11-16 12:32:24,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136bbd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:24, skipping insertion in model container [2022-11-16 12:32:24,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:22" (2/3) ... [2022-11-16 12:32:24,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136bbd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:24, skipping insertion in model container [2022-11-16 12:32:24,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:24" (3/3) ... [2022-11-16 12:32:24,099 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2022-11-16 12:32:24,108 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:32:24,120 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:32:24,120 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:32:24,120 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:32:24,240 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:32:24,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 257 transitions, 538 flow [2022-11-16 12:32:24,393 INFO L130 PetriNetUnfolder]: 25/254 cut-off events. [2022-11-16 12:32:24,393 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:32:24,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 25/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 324 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-16 12:32:24,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 257 transitions, 538 flow [2022-11-16 12:32:24,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 243 transitions, 504 flow [2022-11-16 12:32:24,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:32:24,428 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=PETRI_NET, 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;@60ac984b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:32:24,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:32:24,491 INFO L130 PetriNetUnfolder]: 25/242 cut-off events. [2022-11-16 12:32:24,495 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:32:24,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:24,496 INFO L209 CegarLoopForPetriNet]: 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:24,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:32:24,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1455593789, now seen corresponding path program 1 times [2022-11-16 12:32:24,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:24,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799251090] [2022-11-16 12:32:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:24,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799251090] [2022-11-16 12:32:24,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799251090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:24,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:24,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:32:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195884220] [2022-11-16 12:32:24,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:24,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:32:24,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:32:25,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:32:25,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 257 [2022-11-16 12:32:25,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 243 transitions, 504 flow. Second operand has 2 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:25,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:25,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 257 [2022-11-16 12:32:25,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:25,280 INFO L130 PetriNetUnfolder]: 31/379 cut-off events. [2022-11-16 12:32:25,281 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-16 12:32:25,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 379 events. 31/379 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1231 event pairs, 15 based on Foata normal form. 64/407 useless extension candidates. Maximal degree in co-relation 267. Up to 37 conditions per place. [2022-11-16 12:32:25,292 INFO L137 encePairwiseOnDemand]: 240/257 looper letters, 9 selfloop transitions, 0 changer transitions 6/226 dead transitions. [2022-11-16 12:32:25,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 226 transitions, 488 flow [2022-11-16 12:32:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:32:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:32:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 486 transitions. [2022-11-16 12:32:25,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9455252918287937 [2022-11-16 12:32:25,322 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 486 transitions. [2022-11-16 12:32:25,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 486 transitions. [2022-11-16 12:32:25,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:25,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 486 transitions. [2022-11-16 12:32:25,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:25,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:25,352 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:25,354 INFO L175 Difference]: Start difference. First operand has 228 places, 243 transitions, 504 flow. Second operand 2 states and 486 transitions. [2022-11-16 12:32:25,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 226 transitions, 488 flow [2022-11-16 12:32:25,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 226 transitions, 476 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:32:25,368 INFO L231 Difference]: Finished difference. Result has 223 places, 220 transitions, 446 flow [2022-11-16 12:32:25,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=446, PETRI_PLACES=223, PETRI_TRANSITIONS=220} [2022-11-16 12:32:25,381 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, -5 predicate places. [2022-11-16 12:32:25,381 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 220 transitions, 446 flow [2022-11-16 12:32:25,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:25,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:25,383 INFO L209 CegarLoopForPetriNet]: 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:25,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:32:25,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:32:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1252520012, now seen corresponding path program 1 times [2022-11-16 12:32:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038447612] [2022-11-16 12:32:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:25,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:26,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:26,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038447612] [2022-11-16 12:32:26,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038447612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:26,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:26,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:32:26,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291793131] [2022-11-16 12:32:26,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:26,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:32:26,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:26,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:32:26,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:32:26,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 257 [2022-11-16 12:32:26,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 220 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 175.25) internal successors, (1402), 8 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:26,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:26,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 257 [2022-11-16 12:32:26,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:27,054 INFO L130 PetriNetUnfolder]: 324/1335 cut-off events. [2022-11-16 12:32:27,055 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-16 12:32:27,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 1335 events. 324/1335 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8358 event pairs, 167 based on Foata normal form. 1/1076 useless extension candidates. Maximal degree in co-relation 1821. Up to 419 conditions per place. [2022-11-16 12:32:27,070 INFO L137 encePairwiseOnDemand]: 245/257 looper letters, 60 selfloop transitions, 8 changer transitions 22/246 dead transitions. [2022-11-16 12:32:27,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 246 transitions, 678 flow [2022-11-16 12:32:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:32:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:32:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1950 transitions. [2022-11-16 12:32:27,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6897771489211177 [2022-11-16 12:32:27,077 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1950 transitions. [2022-11-16 12:32:27,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1950 transitions. [2022-11-16 12:32:27,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:27,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1950 transitions. [2022-11-16 12:32:27,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 177.27272727272728) internal successors, (1950), 11 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:27,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:27,096 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:27,096 INFO L175 Difference]: Start difference. First operand has 223 places, 220 transitions, 446 flow. Second operand 11 states and 1950 transitions. [2022-11-16 12:32:27,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 246 transitions, 678 flow [2022-11-16 12:32:27,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 246 transitions, 678 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:32:27,109 INFO L231 Difference]: Finished difference. Result has 231 places, 221 transitions, 478 flow [2022-11-16 12:32:27,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=231, PETRI_TRANSITIONS=221} [2022-11-16 12:32:27,110 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 3 predicate places. [2022-11-16 12:32:27,111 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 221 transitions, 478 flow [2022-11-16 12:32:27,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.25) internal successors, (1402), 8 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:27,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:27,113 INFO L209 CegarLoopForPetriNet]: 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:27,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:32:27,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:32:27,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:27,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1252444629, now seen corresponding path program 1 times [2022-11-16 12:32:27,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:27,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896383992] [2022-11-16 12:32:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:27,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:27,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896383992] [2022-11-16 12:32:27,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896383992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:27,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726159832] [2022-11-16 12:32:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:27,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:27,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:27,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:32:27,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:32:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:27,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:32:27,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:27,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:28,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726159832] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:28,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:32:28,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-16 12:32:28,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483990459] [2022-11-16 12:32:28,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:28,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:32:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:32:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:32:28,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 257 [2022-11-16 12:32:28,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 221 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:28,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:28,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 257 [2022-11-16 12:32:28,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:28,658 INFO L130 PetriNetUnfolder]: 166/758 cut-off events. [2022-11-16 12:32:28,659 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-16 12:32:28,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 758 events. 166/758 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4189 event pairs, 45 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 1086. Up to 161 conditions per place. [2022-11-16 12:32:28,669 INFO L137 encePairwiseOnDemand]: 249/257 looper letters, 47 selfloop transitions, 7 changer transitions 0/229 dead transitions. [2022-11-16 12:32:28,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 229 transitions, 604 flow [2022-11-16 12:32:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:32:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:32:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1412 transitions. [2022-11-16 12:32:28,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7848804891606448 [2022-11-16 12:32:28,675 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1412 transitions. [2022-11-16 12:32:28,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1412 transitions. [2022-11-16 12:32:28,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:28,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1412 transitions. [2022-11-16 12:32:28,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.71428571428572) internal successors, (1412), 7 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:28,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:28,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 257.0) internal successors, (2056), 8 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:28,687 INFO L175 Difference]: Start difference. First operand has 231 places, 221 transitions, 478 flow. Second operand 7 states and 1412 transitions. [2022-11-16 12:32:28,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 229 transitions, 604 flow [2022-11-16 12:32:28,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 229 transitions, 582 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-16 12:32:28,695 INFO L231 Difference]: Finished difference. Result has 228 places, 223 transitions, 489 flow [2022-11-16 12:32:28,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=228, PETRI_TRANSITIONS=223} [2022-11-16 12:32:28,698 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 0 predicate places. [2022-11-16 12:32:28,699 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 223 transitions, 489 flow [2022-11-16 12:32:28,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:28,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:28,700 INFO L209 CegarLoopForPetriNet]: 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:28,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:28,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:28,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:32:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -46194501, now seen corresponding path program 1 times [2022-11-16 12:32:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:28,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633588169] [2022-11-16 12:32:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:32:29,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:29,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633588169] [2022-11-16 12:32:29,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633588169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:29,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507130135] [2022-11-16 12:32:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:29,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:29,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:29,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:32:29,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:32:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:29,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:32:29,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:32:29,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:32:30,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507130135] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:30,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:32:30,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-16 12:32:30,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313851753] [2022-11-16 12:32:30,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:30,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:32:30,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:30,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:32:30,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:32:30,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 257 [2022-11-16 12:32:30,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 223 transitions, 489 flow. Second operand has 9 states, 9 states have (on average 189.11111111111111) internal successors, (1702), 9 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:30,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:30,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 257 [2022-11-16 12:32:30,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:31,098 INFO L130 PetriNetUnfolder]: 1013/2871 cut-off events. [2022-11-16 12:32:31,098 INFO L131 PetriNetUnfolder]: For 620/880 co-relation queries the response was YES. [2022-11-16 12:32:31,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 2871 events. 1013/2871 cut-off events. For 620/880 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 22363 event pairs, 119 based on Foata normal form. 260/2733 useless extension candidates. Maximal degree in co-relation 4812. Up to 475 conditions per place. [2022-11-16 12:32:31,126 INFO L137 encePairwiseOnDemand]: 245/257 looper letters, 96 selfloop transitions, 19 changer transitions 0/281 dead transitions. [2022-11-16 12:32:31,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 281 transitions, 884 flow [2022-11-16 12:32:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:32:31,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:32:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2144 transitions. [2022-11-16 12:32:31,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.758401131941988 [2022-11-16 12:32:31,132 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2144 transitions. [2022-11-16 12:32:31,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2144 transitions. [2022-11-16 12:32:31,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:31,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2144 transitions. [2022-11-16 12:32:31,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 194.9090909090909) internal successors, (2144), 11 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:31,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:31,146 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:31,146 INFO L175 Difference]: Start difference. First operand has 228 places, 223 transitions, 489 flow. Second operand 11 states and 2144 transitions. [2022-11-16 12:32:31,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 281 transitions, 884 flow [2022-11-16 12:32:31,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 281 transitions, 871 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:32:31,153 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 588 flow [2022-11-16 12:32:31,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2022-11-16 12:32:31,155 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 12 predicate places. [2022-11-16 12:32:31,155 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 588 flow [2022-11-16 12:32:31,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.11111111111111) internal successors, (1702), 9 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:31,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:31,157 INFO L209 CegarLoopForPetriNet]: 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:31,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:31,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:31,363 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:32:31,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:31,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1352532323, now seen corresponding path program 2 times [2022-11-16 12:32:31,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:31,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738016546] [2022-11-16 12:32:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:31,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:32:31,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:31,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738016546] [2022-11-16 12:32:31,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738016546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:31,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223349869] [2022-11-16 12:32:31,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:32:31,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:31,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:31,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:32:31,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:32:31,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:32:31,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:32:31,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:32:31,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:32:32,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:32,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223349869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:32,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:32:32,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:32:32,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372932792] [2022-11-16 12:32:32,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:32,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:32:32,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:32,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:32:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:32:32,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 257 [2022-11-16 12:32:32,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:32,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:32,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 257 [2022-11-16 12:32:32,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:32,890 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][220], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 2191#(= ~res1~0 0), 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 5#L101-4true, 171#L75-4true, 180#thread1ENTRYtrue, 245#true, 279#(<= 1 ~N~0), Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-16 12:32:32,890 INFO L383 tUnfolder$Statistics]: this new event has 169 ancestors and is cut-off event [2022-11-16 12:32:32,891 INFO L386 tUnfolder$Statistics]: existing Event has 160 ancestors and is cut-off event [2022-11-16 12:32:32,891 INFO L386 tUnfolder$Statistics]: existing Event has 153 ancestors and is cut-off event [2022-11-16 12:32:32,891 INFO L386 tUnfolder$Statistics]: existing Event has 153 ancestors and is cut-off event [2022-11-16 12:32:32,948 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][220], [Black: 279#(<= 1 ~N~0), Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), 113#L54true, Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 5#L101-4true, 2148#true, 171#L75-4true, 245#true, Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-16 12:32:32,948 INFO L383 tUnfolder$Statistics]: this new event has 184 ancestors and is cut-off event [2022-11-16 12:32:32,948 INFO L386 tUnfolder$Statistics]: existing Event has 168 ancestors and is cut-off event [2022-11-16 12:32:32,948 INFO L386 tUnfolder$Statistics]: existing Event has 175 ancestors and is cut-off event [2022-11-16 12:32:32,949 INFO L386 tUnfolder$Statistics]: existing Event has 168 ancestors and is cut-off event [2022-11-16 12:32:32,952 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([915] thread2EXIT-->L103-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem31#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork0_thidvar0_4) (= v_thread2Thread1of1ForFork0_thidvar2_4 0) (= v_thread2Thread1of1ForFork0_thidvar1_4 0)) InVars {ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][241], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 1161#(<= 1 ~N~0), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 2191#(= ~res1~0 0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 200#L103-2true, 245#true, 19#L80true, 279#(<= 1 ~N~0), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-16 12:32:32,953 INFO L383 tUnfolder$Statistics]: this new event has 192 ancestors and is cut-off event [2022-11-16 12:32:32,953 INFO L386 tUnfolder$Statistics]: existing Event has 183 ancestors and is cut-off event [2022-11-16 12:32:32,953 INFO L386 tUnfolder$Statistics]: existing Event has 176 ancestors and is cut-off event [2022-11-16 12:32:32,953 INFO L386 tUnfolder$Statistics]: existing Event has 160 ancestors and is cut-off event [2022-11-16 12:32:32,962 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([915] thread2EXIT-->L103-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem31#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork0_thidvar0_4) (= v_thread2Thread1of1ForFork0_thidvar2_4 0) (= v_thread2Thread1of1ForFork0_thidvar1_4 0)) InVars {ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem31#1=|v_ULTIMATE.start_main_#t~mem31#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][238], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 1161#(<= 1 ~N~0), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 2148#true, 200#L103-2true, 245#true, 19#L80true, 279#(<= 1 ~N~0), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-16 12:32:32,962 INFO L383 tUnfolder$Statistics]: this new event has 199 ancestors and is cut-off event [2022-11-16 12:32:32,962 INFO L386 tUnfolder$Statistics]: existing Event has 190 ancestors and is cut-off event [2022-11-16 12:32:32,963 INFO L386 tUnfolder$Statistics]: existing Event has 183 ancestors and is cut-off event [2022-11-16 12:32:32,963 INFO L386 tUnfolder$Statistics]: existing Event has 167 ancestors and is cut-off event [2022-11-16 12:32:32,964 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][220], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 2191#(= ~res1~0 0), 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 171#L75-4true, 35#L102-2true, 245#true, 279#(<= 1 ~N~0), Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-16 12:32:32,964 INFO L383 tUnfolder$Statistics]: this new event has 193 ancestors and is cut-off event [2022-11-16 12:32:32,964 INFO L386 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2022-11-16 12:32:32,964 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-11-16 12:32:32,964 INFO L386 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2022-11-16 12:32:32,967 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([902] L75-3-->L75-4: Formula: (= (+ |v_thread3Thread1of1ForFork1_#t~post13#1_3| 1) |v_thread3Thread1of1ForFork1_~i~2#1_13|) InVars {thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} OutVars{thread3Thread1of1ForFork1_~i~2#1=|v_thread3Thread1of1ForFork1_~i~2#1_13|, thread3Thread1of1ForFork1_#t~post13#1=|v_thread3Thread1of1ForFork1_#t~post13#1_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_~i~2#1][220], [Black: 2138#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), Black: 1148#(and (or (< |ULTIMATE.start_create_fresh_int_array_~size#1| 1) (<= 1 ~N~0)) (or (not (< |ULTIMATE.start_create_fresh_int_array_~i~3#1| |ULTIMATE.start_create_fresh_int_array_~size#1|)) (<= 1 ~N~0)) (or (<= 1 ~N~0) (< |ULTIMATE.start_create_fresh_int_array_#in~size#1| 1))), Black: 2140#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0) (<= 1 ~M~0)), Black: 1150#(and (< |thread1Thread1of1ForFork2_~i~0#1| ~N~0) (<= 1 ~N~0)), Black: 2132#(and (< |thread2Thread1of1ForFork0_~i~1#1| ~M~0) (<= 1 ~N~0)), 18#L62-4true, 1161#(<= 1 ~N~0), Black: 259#(and (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), 2148#true, 171#L75-4true, 35#L102-2true, 245#true, 279#(<= 1 ~N~0), Black: 2134#(and (or (< |thread3Thread1of1ForFork1_~i~2#1| ~N~0) (<= 1 ~M~0)) (<= 1 ~N~0)), Black: 2136#(and (<= 1 ~N~0) (<= 1 ~M~0))]) [2022-11-16 12:32:32,967 INFO L383 tUnfolder$Statistics]: this new event has 200 ancestors and is cut-off event [2022-11-16 12:32:32,967 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-11-16 12:32:32,968 INFO L386 tUnfolder$Statistics]: existing Event has 184 ancestors and is cut-off event [2022-11-16 12:32:32,968 INFO L386 tUnfolder$Statistics]: existing Event has 191 ancestors and is cut-off event [2022-11-16 12:32:32,968 INFO L130 PetriNetUnfolder]: 188/1232 cut-off events. [2022-11-16 12:32:32,968 INFO L131 PetriNetUnfolder]: For 208/240 co-relation queries the response was YES. [2022-11-16 12:32:32,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 1232 events. 188/1232 cut-off events. For 208/240 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7321 event pairs, 7 based on Foata normal form. 2/1154 useless extension candidates. Maximal degree in co-relation 1800. Up to 77 conditions per place. [2022-11-16 12:32:32,987 INFO L137 encePairwiseOnDemand]: 249/257 looper letters, 47 selfloop transitions, 6 changer transitions 4/257 dead transitions. [2022-11-16 12:32:32,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 257 transitions, 755 flow [2022-11-16 12:32:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:32:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:32:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2022-11-16 12:32:32,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.808041504539559 [2022-11-16 12:32:32,992 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1246 transitions. [2022-11-16 12:32:32,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1246 transitions. [2022-11-16 12:32:32,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:32,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1246 transitions. [2022-11-16 12:32:32,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:32,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 257.0) internal successors, (1799), 7 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:33,001 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 257.0) internal successors, (1799), 7 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:33,001 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 588 flow. Second operand 6 states and 1246 transitions. [2022-11-16 12:32:33,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 257 transitions, 755 flow [2022-11-16 12:32:33,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 257 transitions, 748 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:32:33,016 INFO L231 Difference]: Finished difference. Result has 244 places, 239 transitions, 617 flow [2022-11-16 12:32:33,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=617, PETRI_PLACES=244, PETRI_TRANSITIONS=239} [2022-11-16 12:32:33,020 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 16 predicate places. [2022-11-16 12:32:33,020 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 239 transitions, 617 flow [2022-11-16 12:32:33,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:33,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:33,022 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:33,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:33,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:33,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:32:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash 53574630, now seen corresponding path program 1 times [2022-11-16 12:32:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:33,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251611289] [2022-11-16 12:32:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:32:33,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:33,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251611289] [2022-11-16 12:32:33,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251611289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:33,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289760988] [2022-11-16 12:32:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:33,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:33,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:33,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:32:33,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:32:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:33,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:32:33,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:32:34,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:32:34,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289760988] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:34,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:32:34,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-16 12:32:34,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88981689] [2022-11-16 12:32:34,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:34,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:32:34,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:34,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:32:34,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:32:34,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 257 [2022-11-16 12:32:34,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 239 transitions, 617 flow. Second operand has 9 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 9 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:34,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:34,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 257 [2022-11-16 12:32:34,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:37,687 INFO L130 PetriNetUnfolder]: 4159/10926 cut-off events. [2022-11-16 12:32:37,687 INFO L131 PetriNetUnfolder]: For 6686/7638 co-relation queries the response was YES. [2022-11-16 12:32:37,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22589 conditions, 10926 events. 4159/10926 cut-off events. For 6686/7638 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 110417 event pairs, 712 based on Foata normal form. 938/10972 useless extension candidates. Maximal degree in co-relation 22572. Up to 1647 conditions per place. [2022-11-16 12:32:37,813 INFO L137 encePairwiseOnDemand]: 246/257 looper letters, 143 selfloop transitions, 27 changer transitions 0/336 dead transitions. [2022-11-16 12:32:37,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 336 transitions, 1373 flow [2022-11-16 12:32:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:32:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:32:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2156 transitions. [2022-11-16 12:32:37,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7626459143968871 [2022-11-16 12:32:37,820 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2156 transitions. [2022-11-16 12:32:37,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2156 transitions. [2022-11-16 12:32:37,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:37,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2156 transitions. [2022-11-16 12:32:37,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 196.0) internal successors, (2156), 11 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:37,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:37,841 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:37,842 INFO L175 Difference]: Start difference. First operand has 244 places, 239 transitions, 617 flow. Second operand 11 states and 2156 transitions. [2022-11-16 12:32:37,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 336 transitions, 1373 flow [2022-11-16 12:32:37,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 336 transitions, 1369 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 12:32:37,904 INFO L231 Difference]: Finished difference. Result has 254 places, 256 transitions, 810 flow [2022-11-16 12:32:37,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=810, PETRI_PLACES=254, PETRI_TRANSITIONS=256} [2022-11-16 12:32:37,907 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 26 predicate places. [2022-11-16 12:32:37,908 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 256 transitions, 810 flow [2022-11-16 12:32:37,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 9 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:37,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:37,911 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:37,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:38,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:32:38,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:32:38,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:38,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1985158974, now seen corresponding path program 2 times [2022-11-16 12:32:38,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:38,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459695825] [2022-11-16 12:32:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:38,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:32:38,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:38,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459695825] [2022-11-16 12:32:38,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459695825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:38,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185969000] [2022-11-16 12:32:38,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:32:38,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:38,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:38,438 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:32:38,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:32:38,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:32:38,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:32:38,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:32:38,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:32:39,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:32:39,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185969000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:39,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:32:39,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:32:39,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184761943] [2022-11-16 12:32:39,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:39,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:32:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:32:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:32:39,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 257 [2022-11-16 12:32:39,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 256 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 190.83333333333334) internal successors, (1145), 6 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:39,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:39,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 257 [2022-11-16 12:32:39,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:40,638 INFO L130 PetriNetUnfolder]: 1956/6202 cut-off events. [2022-11-16 12:32:40,638 INFO L131 PetriNetUnfolder]: For 6060/6620 co-relation queries the response was YES. [2022-11-16 12:32:40,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13223 conditions, 6202 events. 1956/6202 cut-off events. For 6060/6620 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 58970 event pairs, 360 based on Foata normal form. 581/6225 useless extension candidates. Maximal degree in co-relation 13203. Up to 1802 conditions per place. [2022-11-16 12:32:40,727 INFO L137 encePairwiseOnDemand]: 248/257 looper letters, 65 selfloop transitions, 18 changer transitions 0/261 dead transitions. [2022-11-16 12:32:40,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 261 transitions, 983 flow [2022-11-16 12:32:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:32:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:32:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1531 transitions. [2022-11-16 12:32:40,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7446498054474708 [2022-11-16 12:32:40,734 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1531 transitions. [2022-11-16 12:32:40,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1531 transitions. [2022-11-16 12:32:40,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:40,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1531 transitions. [2022-11-16 12:32:40,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 191.375) internal successors, (1531), 8 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:40,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 257.0) internal successors, (2313), 9 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:40,749 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 257.0) internal successors, (2313), 9 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:40,749 INFO L175 Difference]: Start difference. First operand has 254 places, 256 transitions, 810 flow. Second operand 8 states and 1531 transitions. [2022-11-16 12:32:40,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 261 transitions, 983 flow [2022-11-16 12:32:40,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 261 transitions, 951 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-11-16 12:32:40,784 INFO L231 Difference]: Finished difference. Result has 252 places, 249 transitions, 768 flow [2022-11-16 12:32:40,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=252, PETRI_TRANSITIONS=249} [2022-11-16 12:32:40,786 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 24 predicate places. [2022-11-16 12:32:40,786 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 249 transitions, 768 flow [2022-11-16 12:32:40,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.83333333333334) internal successors, (1145), 6 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:40,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:40,788 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:40,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:32:40,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_250fb9a0-2db4-499c-b0fe-f81f29daf2f4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:32:40,995 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:32:40,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:40,995 INFO L85 PathProgramCache]: Analyzing trace with hash 570630618, now seen corresponding path program 1 times [2022-11-16 12:32:40,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:40,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018467395] [2022-11-16 12:32:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:40,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:32:41,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:41,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018467395] [2022-11-16 12:32:41,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018467395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:41,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:41,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:32:41,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674595087] [2022-11-16 12:32:41,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:41,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:32:41,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:32:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:32:41,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 257 [2022-11-16 12:32:41,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 249 transitions, 768 flow. Second operand has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:41,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:41,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 257 [2022-11-16 12:32:41,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:33:06,185 INFO L130 PetriNetUnfolder]: 57595/126340 cut-off events. [2022-11-16 12:33:06,185 INFO L131 PetriNetUnfolder]: For 44486/45681 co-relation queries the response was YES. [2022-11-16 12:33:06,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245969 conditions, 126340 events. 57595/126340 cut-off events. For 44486/45681 co-relation queries the response was YES. Maximal size of possible extension queue 3791. Compared 1582219 event pairs, 27819 based on Foata normal form. 554/116760 useless extension candidates. Maximal degree in co-relation 245952. Up to 28197 conditions per place. [2022-11-16 12:33:07,530 INFO L137 encePairwiseOnDemand]: 237/257 looper letters, 255 selfloop transitions, 36 changer transitions 0/462 dead transitions. [2022-11-16 12:33:07,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 462 transitions, 1935 flow [2022-11-16 12:33:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:33:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:33:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3117 transitions. [2022-11-16 12:33:07,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7134355687800412 [2022-11-16 12:33:07,545 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3117 transitions. [2022-11-16 12:33:07,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3117 transitions. [2022-11-16 12:33:07,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:33:07,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3117 transitions. [2022-11-16 12:33:07,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 183.35294117647058) internal successors, (3117), 17 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:07,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 257.0) internal successors, (4626), 18 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:07,581 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 257.0) internal successors, (4626), 18 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:07,581 INFO L175 Difference]: Start difference. First operand has 252 places, 249 transitions, 768 flow. Second operand 17 states and 3117 transitions. [2022-11-16 12:33:07,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 462 transitions, 1935 flow [2022-11-16 12:33:08,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 462 transitions, 1915 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:33:08,436 INFO L231 Difference]: Finished difference. Result has 273 places, 283 transitions, 985 flow [2022-11-16 12:33:08,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=985, PETRI_PLACES=273, PETRI_TRANSITIONS=283} [2022-11-16 12:33:08,440 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 45 predicate places. [2022-11-16 12:33:08,440 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 283 transitions, 985 flow [2022-11-16 12:33:08,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:08,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:33:08,441 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:08,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:33:08,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:33:08,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:08,443 INFO L85 PathProgramCache]: Analyzing trace with hash -952557276, now seen corresponding path program 1 times [2022-11-16 12:33:08,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:08,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685091958] [2022-11-16 12:33:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:08,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:33:08,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:08,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685091958] [2022-11-16 12:33:08,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685091958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:08,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:08,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:33:08,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15417895] [2022-11-16 12:33:08,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:08,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:33:08,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:08,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:33:08,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:33:08,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 257 [2022-11-16 12:33:08,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 283 transitions, 985 flow. Second operand has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 12 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:08,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:33:08,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 257 [2022-11-16 12:33:08,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand