./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ --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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --- 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-dbf71c6-m [2022-10-17 10:44:46,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:44:46,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:44:46,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:44:46,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:44:46,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:44:46,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:44:46,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:44:46,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:44:46,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:44:46,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:44:46,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:44:46,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:44:46,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:44:46,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:44:46,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:44:46,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:44:46,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:44:46,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:44:46,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:44:46,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:44:46,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:44:46,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:44:46,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:44:46,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:44:46,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:44:46,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:44:46,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:44:46,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:44:46,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:44:46,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:44:46,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:44:46,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:44:46,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:44:46,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:44:46,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:44:46,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:44:46,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:44:46,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:44:46,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:44:46,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:44:46,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:44:47,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:44:47,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:44:47,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:44:47,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:44:47,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:44:47,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:44:47,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:44:47,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:44:47,006 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:44:47,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:44:47,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:44:47,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:44:47,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:44:47,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:44:47,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:44:47,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:44:47,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:44:47,008 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:44:47,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:44:47,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:44:47,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:44:47,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:44:47,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:44:47,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:44:47,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:44:47,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:44:47,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:44:47,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:44:47,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:44:47,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:44:47,012 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:44:47,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:44:47,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:44:47,012 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_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 [2022-10-17 10:44:47,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:44:47,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:44:47,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:44:47,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:44:47,339 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:44:47,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-10-17 10:44:47,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/data/ae7a5faeb/aded57df7a104989a61e87bf1f067382/FLAG2b99992cc [2022-10-17 10:44:47,990 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:44:47,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-10-17 10:44:48,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/data/ae7a5faeb/aded57df7a104989a61e87bf1f067382/FLAG2b99992cc [2022-10-17 10:44:48,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/data/ae7a5faeb/aded57df7a104989a61e87bf1f067382 [2022-10-17 10:44:48,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:44:48,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:44:48,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:44:48,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:44:48,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:44:48,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26274984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48, skipping insertion in model container [2022-10-17 10:44:48,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:44:48,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:44:48,582 WARN L230 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_299fe703-60d6-43be-8347-5a22f5b88d93/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-10-17 10:44:48,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:44:48,600 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:44:48,645 WARN L230 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_299fe703-60d6-43be-8347-5a22f5b88d93/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-10-17 10:44:48,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:44:48,689 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:44:48,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48 WrapperNode [2022-10-17 10:44:48,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:44:48,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:44:48,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:44:48,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:44:48,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,762 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 150 [2022-10-17 10:44:48,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:44:48,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:44:48,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:44:48,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:44:48,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:44:48,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:44:48,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:44:48,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:44:48,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (1/1) ... [2022-10-17 10:44:48,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:44:48,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:44:48,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:44:48,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:44:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:44:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:44:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:44:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:44:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:44:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:44:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:44:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:44:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:44:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:44:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:44:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:44:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:44:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:44:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:44:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:44:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:44:48,910 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:44:49,054 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:44:49,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:44:49,602 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:44:49,667 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:44:49,667 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 10:44:49,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:44:49 BoogieIcfgContainer [2022-10-17 10:44:49,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:44:49,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:44:49,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:44:49,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:44:49,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:44:48" (1/3) ... [2022-10-17 10:44:49,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e02789a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:44:49, skipping insertion in model container [2022-10-17 10:44:49,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:44:48" (2/3) ... [2022-10-17 10:44:49,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e02789a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:44:49, skipping insertion in model container [2022-10-17 10:44:49,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:44:49" (3/3) ... [2022-10-17 10:44:49,689 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2022-10-17 10:44:49,703 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:44:49,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:44:49,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:44:49,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:44:49,880 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-17 10:44:49,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 228 transitions, 480 flow [2022-10-17 10:44:50,165 INFO L130 PetriNetUnfolder]: 20/225 cut-off events. [2022-10-17 10:44:50,166 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:44:50,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 225 events. 20/225 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 150 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 184. Up to 3 conditions per place. [2022-10-17 10:44:50,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 228 transitions, 480 flow [2022-10-17 10:44:50,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 214 transitions, 446 flow [2022-10-17 10:44:50,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:44:50,222 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;@78d1d869, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:44:50,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:44:50,282 INFO L130 PetriNetUnfolder]: 20/213 cut-off events. [2022-10-17 10:44:50,282 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:44:50,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:44:50,283 INFO L208 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] [2022-10-17 10:44:50,284 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)] === [2022-10-17 10:44:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2084564772, now seen corresponding path program 1 times [2022-10-17 10:44:50,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:50,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628183727] [2022-10-17 10:44:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:50,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:50,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:50,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628183727] [2022-10-17 10:44:50,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628183727] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:50,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:50,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:44:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267203442] [2022-10-17 10:44:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:44:50,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:50,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:44:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:44:50,876 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 228 [2022-10-17 10:44:50,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 214 transitions, 446 flow. Second operand has 2 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 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) [2022-10-17 10:44:50,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:44:50,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 228 [2022-10-17 10:44:50,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:44:51,019 INFO L130 PetriNetUnfolder]: 20/247 cut-off events. [2022-10-17 10:44:51,020 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-10-17 10:44:51,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 247 events. 20/247 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 322 event pairs, 7 based on Foata normal form. 31/258 useless extension candidates. Maximal degree in co-relation 176. Up to 28 conditions per place. [2022-10-17 10:44:51,024 INFO L137 encePairwiseOnDemand]: 215/228 looper letters, 8 selfloop transitions, 0 changer transitions 7/201 dead transitions. [2022-10-17 10:44:51,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 201 transitions, 436 flow [2022-10-17 10:44:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:44:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:44:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 433 transitions. [2022-10-17 10:44:51,051 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9495614035087719 [2022-10-17 10:44:51,052 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 433 transitions. [2022-10-17 10:44:51,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 433 transitions. [2022-10-17 10:44:51,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:44:51,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 433 transitions. [2022-10-17 10:44:51,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.5) internal successors, (433), 2 states have internal predecessors, (433), 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) [2022-10-17 10:44:51,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2022-10-17 10:44:51,081 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2022-10-17 10:44:51,083 INFO L175 Difference]: Start difference. First operand has 204 places, 214 transitions, 446 flow. Second operand 2 states and 433 transitions. [2022-10-17 10:44:51,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 201 transitions, 436 flow [2022-10-17 10:44:51,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 201 transitions, 424 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-10-17 10:44:51,100 INFO L231 Difference]: Finished difference. Result has 199 places, 194 transitions, 394 flow [2022-10-17 10:44:51,103 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=394, PETRI_PLACES=199, PETRI_TRANSITIONS=194} [2022-10-17 10:44:51,114 INFO L287 CegarLoopForPetriNet]: 204 programPoint places, -5 predicate places. [2022-10-17 10:44:51,115 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 194 transitions, 394 flow [2022-10-17 10:44:51,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 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) [2022-10-17 10:44:51,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:44:51,117 INFO L208 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] [2022-10-17 10:44:51,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:44:51,118 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)] === [2022-10-17 10:44:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1278950550, now seen corresponding path program 1 times [2022-10-17 10:44:51,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:51,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176858128] [2022-10-17 10:44:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:51,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:52,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:52,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176858128] [2022-10-17 10:44:52,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176858128] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:52,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:52,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105309166] [2022-10-17 10:44:52,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:52,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:52,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:52,810 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 228 [2022-10-17 10:44:52,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 194 transitions, 394 flow. Second operand has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 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) [2022-10-17 10:44:52,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:44:52,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 228 [2022-10-17 10:44:52,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:44:53,172 INFO L130 PetriNetUnfolder]: 70/452 cut-off events. [2022-10-17 10:44:53,172 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-10-17 10:44:53,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 452 events. 70/452 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1493 event pairs, 17 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 590. Up to 62 conditions per place. [2022-10-17 10:44:53,180 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 52 selfloop transitions, 6 changer transitions 4/215 dead transitions. [2022-10-17 10:44:53,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 215 transitions, 568 flow [2022-10-17 10:44:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:44:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:44:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1225 transitions. [2022-10-17 10:44:53,189 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7675438596491229 [2022-10-17 10:44:53,189 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1225 transitions. [2022-10-17 10:44:53,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1225 transitions. [2022-10-17 10:44:53,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:44:53,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1225 transitions. [2022-10-17 10:44:53,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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) [2022-10-17 10:44:53,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2022-10-17 10:44:53,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2022-10-17 10:44:53,206 INFO L175 Difference]: Start difference. First operand has 199 places, 194 transitions, 394 flow. Second operand 7 states and 1225 transitions. [2022-10-17 10:44:53,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 215 transitions, 568 flow [2022-10-17 10:44:53,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 215 transitions, 568 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:44:53,222 INFO L231 Difference]: Finished difference. Result has 201 places, 197 transitions, 425 flow [2022-10-17 10:44:53,223 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=201, PETRI_TRANSITIONS=197} [2022-10-17 10:44:53,224 INFO L287 CegarLoopForPetriNet]: 204 programPoint places, -3 predicate places. [2022-10-17 10:44:53,224 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 197 transitions, 425 flow [2022-10-17 10:44:53,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 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) [2022-10-17 10:44:53,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:44:53,226 INFO L208 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] [2022-10-17 10:44:53,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:44:53,227 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)] === [2022-10-17 10:44:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash 95391151, now seen corresponding path program 1 times [2022-10-17 10:44:53,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:53,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183971915] [2022-10-17 10:44:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:53,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:53,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183971915] [2022-10-17 10:44:53,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183971915] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:53,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:53,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:53,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226436482] [2022-10-17 10:44:53,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:53,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:53,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:53,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:53,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:53,649 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 228 [2022-10-17 10:44:53,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 197 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 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) [2022-10-17 10:44:53,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:44:53,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 228 [2022-10-17 10:44:53,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:44:54,854 INFO L130 PetriNetUnfolder]: 1164/2746 cut-off events. [2022-10-17 10:44:54,854 INFO L131 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2022-10-17 10:44:54,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 2746 events. 1164/2746 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17584 event pairs, 581 based on Foata normal form. 0/2087 useless extension candidates. Maximal degree in co-relation 4696. Up to 1051 conditions per place. [2022-10-17 10:44:54,893 INFO L137 encePairwiseOnDemand]: 209/228 looper letters, 120 selfloop transitions, 28 changer transitions 0/288 dead transitions. [2022-10-17 10:44:54,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 288 transitions, 919 flow [2022-10-17 10:44:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:44:54,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:44:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1887 transitions. [2022-10-17 10:44:54,904 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7523923444976076 [2022-10-17 10:44:54,904 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1887 transitions. [2022-10-17 10:44:54,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1887 transitions. [2022-10-17 10:44:54,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:44:54,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1887 transitions. [2022-10-17 10:44:54,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 171.54545454545453) internal successors, (1887), 11 states have internal predecessors, (1887), 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) [2022-10-17 10:44:54,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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) [2022-10-17 10:44:54,926 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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) [2022-10-17 10:44:54,926 INFO L175 Difference]: Start difference. First operand has 201 places, 197 transitions, 425 flow. Second operand 11 states and 1887 transitions. [2022-10-17 10:44:54,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 288 transitions, 919 flow [2022-10-17 10:44:54,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 288 transitions, 913 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-10-17 10:44:54,942 INFO L231 Difference]: Finished difference. Result has 210 places, 214 transitions, 552 flow [2022-10-17 10:44:54,943 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=552, PETRI_PLACES=210, PETRI_TRANSITIONS=214} [2022-10-17 10:44:54,946 INFO L287 CegarLoopForPetriNet]: 204 programPoint places, 6 predicate places. [2022-10-17 10:44:54,946 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 214 transitions, 552 flow [2022-10-17 10:44:54,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 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) [2022-10-17 10:44:54,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:44:54,948 INFO L208 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, 1, 1, 1] [2022-10-17 10:44:54,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:44:54,949 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)] === [2022-10-17 10:44:54,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash 760969966, now seen corresponding path program 1 times [2022-10-17 10:44:54,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:54,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171696487] [2022-10-17 10:44:54,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:54,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:55,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171696487] [2022-10-17 10:44:55,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171696487] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:55,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:55,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:55,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068043892] [2022-10-17 10:44:55,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:55,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:55,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:55,370 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 228 [2022-10-17 10:44:55,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 214 transitions, 552 flow. Second operand has 7 states, 7 states have (on average 162.85714285714286) internal successors, (1140), 7 states have internal predecessors, (1140), 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) [2022-10-17 10:44:55,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:44:55,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 228 [2022-10-17 10:44:55,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:44:56,439 INFO L130 PetriNetUnfolder]: 894/2275 cut-off events. [2022-10-17 10:44:56,440 INFO L131 PetriNetUnfolder]: For 585/615 co-relation queries the response was YES. [2022-10-17 10:44:56,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4196 conditions, 2275 events. 894/2275 cut-off events. For 585/615 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 13697 event pairs, 481 based on Foata normal form. 30/1960 useless extension candidates. Maximal degree in co-relation 4186. Up to 1093 conditions per place. [2022-10-17 10:44:56,468 INFO L137 encePairwiseOnDemand]: 209/228 looper letters, 56 selfloop transitions, 14 changer transitions 77/286 dead transitions. [2022-10-17 10:44:56,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 286 transitions, 1018 flow [2022-10-17 10:44:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:44:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:44:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1873 transitions. [2022-10-17 10:44:56,477 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7468102073365231 [2022-10-17 10:44:56,478 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1873 transitions. [2022-10-17 10:44:56,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1873 transitions. [2022-10-17 10:44:56,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:44:56,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1873 transitions. [2022-10-17 10:44:56,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 170.27272727272728) internal successors, (1873), 11 states have internal predecessors, (1873), 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) [2022-10-17 10:44:56,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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) [2022-10-17 10:44:56,496 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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) [2022-10-17 10:44:56,497 INFO L175 Difference]: Start difference. First operand has 210 places, 214 transitions, 552 flow. Second operand 11 states and 1873 transitions. [2022-10-17 10:44:56,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 286 transitions, 1018 flow [2022-10-17 10:44:56,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 286 transitions, 1013 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:44:56,510 INFO L231 Difference]: Finished difference. Result has 222 places, 200 transitions, 512 flow [2022-10-17 10:44:56,511 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=512, PETRI_PLACES=222, PETRI_TRANSITIONS=200} [2022-10-17 10:44:56,512 INFO L287 CegarLoopForPetriNet]: 204 programPoint places, 18 predicate places. [2022-10-17 10:44:56,512 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 200 transitions, 512 flow [2022-10-17 10:44:56,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.85714285714286) internal successors, (1140), 7 states have internal predecessors, (1140), 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) [2022-10-17 10:44:56,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:44:56,514 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:56,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:44:56,514 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)] === [2022-10-17 10:44:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:56,515 INFO L85 PathProgramCache]: Analyzing trace with hash -980413755, now seen corresponding path program 1 times [2022-10-17 10:44:56,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:56,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846796458] [2022-10-17 10:44:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:56,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:44:56,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:56,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846796458] [2022-10-17 10:44:56,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846796458] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:44:56,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220281846] [2022-10-17 10:44:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:56,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:44:56,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:44:56,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:44:56,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:44:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:57,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:44:57,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:44:57,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:44:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:44:58,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220281846] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:44:58,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:44:58,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-10-17 10:44:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230146735] [2022-10-17 10:44:58,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:58,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:58,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:58,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:44:58,078 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 228 [2022-10-17 10:44:58,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 200 transitions, 512 flow. Second operand has 7 states, 7 states have (on average 164.14285714285714) internal successors, (1149), 7 states have internal predecessors, (1149), 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) [2022-10-17 10:44:58,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:44:58,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 228 [2022-10-17 10:44:58,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:44:58,628 INFO L130 PetriNetUnfolder]: 635/1510 cut-off events. [2022-10-17 10:44:58,628 INFO L131 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2022-10-17 10:44:58,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2991 conditions, 1510 events. 635/1510 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8402 event pairs, 273 based on Foata normal form. 29/1312 useless extension candidates. Maximal degree in co-relation 2977. Up to 603 conditions per place. [2022-10-17 10:44:58,655 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 65 selfloop transitions, 7 changer transitions 0/211 dead transitions. [2022-10-17 10:44:58,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 211 transitions, 693 flow [2022-10-17 10:44:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:44:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:44:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1167 transitions. [2022-10-17 10:44:58,661 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.731203007518797 [2022-10-17 10:44:58,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1167 transitions. [2022-10-17 10:44:58,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1167 transitions. [2022-10-17 10:44:58,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:44:58,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1167 transitions. [2022-10-17 10:44:58,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.71428571428572) internal successors, (1167), 7 states have internal predecessors, (1167), 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) [2022-10-17 10:44:58,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2022-10-17 10:44:58,676 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2022-10-17 10:44:58,676 INFO L175 Difference]: Start difference. First operand has 222 places, 200 transitions, 512 flow. Second operand 7 states and 1167 transitions. [2022-10-17 10:44:58,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 211 transitions, 693 flow [2022-10-17 10:44:58,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 211 transitions, 620 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-10-17 10:44:58,691 INFO L231 Difference]: Finished difference. Result has 207 places, 202 transitions, 480 flow [2022-10-17 10:44:58,692 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=207, PETRI_TRANSITIONS=202} [2022-10-17 10:44:58,695 INFO L287 CegarLoopForPetriNet]: 204 programPoint places, 3 predicate places. [2022-10-17 10:44:58,695 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 202 transitions, 480 flow [2022-10-17 10:44:58,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 164.14285714285714) internal successors, (1149), 7 states have internal predecessors, (1149), 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) [2022-10-17 10:44:58,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:44:58,697 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:58,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:44:58,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:44:58,923 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)] === [2022-10-17 10:44:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:58,924 INFO L85 PathProgramCache]: Analyzing trace with hash 113812192, now seen corresponding path program 1 times [2022-10-17 10:44:58,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:58,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533446309] [2022-10-17 10:44:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:58,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:44:59,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:59,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533446309] [2022-10-17 10:44:59,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533446309] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:44:59,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35709124] [2022-10-17 10:44:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:59,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:44:59,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:44:59,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:44:59,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:44:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:59,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:44:59,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:44:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:44:59,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:45:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:45:00,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35709124] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:45:00,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:45:00,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-10-17 10:45:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428514807] [2022-10-17 10:45:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:00,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:45:00,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:45:00,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:45:00,207 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 228 [2022-10-17 10:45:00,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 202 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2022-10-17 10:45:00,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:45:00,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 228 [2022-10-17 10:45:00,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:45:00,586 INFO L130 PetriNetUnfolder]: 449/1048 cut-off events. [2022-10-17 10:45:00,586 INFO L131 PetriNetUnfolder]: For 356/469 co-relation queries the response was YES. [2022-10-17 10:45:00,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 1048 events. 449/1048 cut-off events. For 356/469 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5149 event pairs, 121 based on Foata normal form. 113/961 useless extension candidates. Maximal degree in co-relation 2112. Up to 401 conditions per place. [2022-10-17 10:45:00,602 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 64 selfloop transitions, 7 changer transitions 0/212 dead transitions. [2022-10-17 10:45:00,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 212 transitions, 657 flow [2022-10-17 10:45:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:45:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:45:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1178 transitions. [2022-10-17 10:45:00,609 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2022-10-17 10:45:00,609 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1178 transitions. [2022-10-17 10:45:00,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1178 transitions. [2022-10-17 10:45:00,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:45:00,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1178 transitions. [2022-10-17 10:45:00,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.28571428571428) internal successors, (1178), 7 states have internal predecessors, (1178), 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) [2022-10-17 10:45:00,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2022-10-17 10:45:00,622 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2022-10-17 10:45:00,622 INFO L175 Difference]: Start difference. First operand has 207 places, 202 transitions, 480 flow. Second operand 7 states and 1178 transitions. [2022-10-17 10:45:00,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 212 transitions, 657 flow [2022-10-17 10:45:00,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 212 transitions, 648 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:45:00,631 INFO L231 Difference]: Finished difference. Result has 211 places, 203 transitions, 499 flow [2022-10-17 10:45:00,632 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=211, PETRI_TRANSITIONS=203} [2022-10-17 10:45:00,635 INFO L287 CegarLoopForPetriNet]: 204 programPoint places, 7 predicate places. [2022-10-17 10:45:00,636 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 203 transitions, 499 flow [2022-10-17 10:45:00,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2022-10-17 10:45:00,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:45:00,637 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:45:00,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-17 10:45:00,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:45:00,852 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)] === [2022-10-17 10:45:00,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:00,852 INFO L85 PathProgramCache]: Analyzing trace with hash -591148976, now seen corresponding path program 1 times [2022-10-17 10:45:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:00,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66283565] [2022-10-17 10:45:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:00,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:45:01,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:01,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66283565] [2022-10-17 10:45:01,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66283565] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:45:01,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609739630] [2022-10-17 10:45:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:01,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:45:01,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:45:01,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:45:01,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:45:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:01,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:45:01,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:45:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:45:01,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:45:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:45:01,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609739630] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:45:01,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:45:01,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-10-17 10:45:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941531795] [2022-10-17 10:45:01,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:45:01,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:45:01,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:45:01,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:45:01,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:45:01,947 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 228 [2022-10-17 10:45:01,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 203 transitions, 499 flow. Second operand has 7 states, 7 states have (on average 165.28571428571428) internal successors, (1157), 7 states have internal predecessors, (1157), 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) [2022-10-17 10:45:01,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:45:01,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 228 [2022-10-17 10:45:01,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:45:02,308 INFO L130 PetriNetUnfolder]: 440/1049 cut-off events. [2022-10-17 10:45:02,308 INFO L131 PetriNetUnfolder]: For 596/849 co-relation queries the response was YES. [2022-10-17 10:45:02,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1049 events. 440/1049 cut-off events. For 596/849 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5272 event pairs, 109 based on Foata normal form. 253/1194 useless extension candidates. Maximal degree in co-relation 2220. Up to 415 conditions per place. [2022-10-17 10:45:02,324 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 66 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2022-10-17 10:45:02,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 213 transitions, 682 flow [2022-10-17 10:45:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:45:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:45:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1172 transitions. [2022-10-17 10:45:02,331 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7343358395989975 [2022-10-17 10:45:02,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1172 transitions. [2022-10-17 10:45:02,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1172 transitions. [2022-10-17 10:45:02,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:45:02,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1172 transitions. [2022-10-17 10:45:02,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.42857142857142) internal successors, (1172), 7 states have internal predecessors, (1172), 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) [2022-10-17 10:45:02,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2022-10-17 10:45:02,343 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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) [2022-10-17 10:45:02,343 INFO L175 Difference]: Start difference. First operand has 211 places, 203 transitions, 499 flow. Second operand 7 states and 1172 transitions. [2022-10-17 10:45:02,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 213 transitions, 682 flow [2022-10-17 10:45:02,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 213 transitions, 671 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:45:02,352 INFO L231 Difference]: Finished difference. Result has 214 places, 204 transitions, 516 flow [2022-10-17 10:45:02,353 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=516, PETRI_PLACES=214, PETRI_TRANSITIONS=204} [2022-10-17 10:45:02,354 INFO L287 CegarLoopForPetriNet]: 204 programPoint places, 10 predicate places. [2022-10-17 10:45:02,354 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 204 transitions, 516 flow [2022-10-17 10:45:02,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.28571428571428) internal successors, (1157), 7 states have internal predecessors, (1157), 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) [2022-10-17 10:45:02,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:45:02,356 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:45:02,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:45:02,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 10:45:02,569 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)] === [2022-10-17 10:45:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:45:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1209824917, now seen corresponding path program 1 times [2022-10-17 10:45:02,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:45:02,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843430555] [2022-10-17 10:45:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:02,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:45:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:45:06,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:45:06,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843430555] [2022-10-17 10:45:06,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843430555] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:45:06,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970285711] [2022-10-17 10:45:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:45:06,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:45:06,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:45:06,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:45:06,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299fe703-60d6-43be-8347-5a22f5b88d93/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:45:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:45:07,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 72 conjunts are in the unsatisfiable core [2022-10-17 10:45:07,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:45:08,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:45:08,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:45:09,777 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 10:45:09,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-17 10:45:10,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:45:10,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:45:10,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:45:10,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:45:11,277 INFO L356 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2022-10-17 10:45:11,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 58 [2022-10-17 10:45:15,029 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:45:15,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 165 [2022-10-17 10:45:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:45:15,434 INFO L328 TraceCheckSpWp]: Computing backward predicates...