./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:54:06,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:54:06,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:54:06,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:54:06,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:54:06,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:54:06,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:54:06,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:54:06,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:54:06,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:54:06,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:54:06,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:54:06,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:54:06,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:54:06,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:54:06,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:54:06,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:54:06,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:54:06,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:54:06,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:54:06,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:54:06,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:54:06,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:54:06,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:54:06,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:54:06,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:54:06,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:54:06,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:54:06,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:54:06,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:54:06,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:54:06,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:54:06,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:54:06,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:54:06,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:54:06,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:54:06,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:54:06,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:54:06,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:54:06,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:54:06,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:54:06,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:54:06,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:54:06,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:54:06,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:54:06,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:54:06,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:54:06,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:54:06,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:54:06,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:54:06,214 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:54:06,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:54:06,215 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:54:06,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:54:06,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:54:06,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:54:06,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:54:06,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:54:06,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:54:06,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:54:06,216 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:54:06,216 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:54:06,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:54:06,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:54:06,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:54:06,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:54:06,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:54:06,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:54:06,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:06,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:54:06,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:54:06,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:54:06,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:54:06,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:54:06,219 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:54:06,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:54:06,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:54:06,220 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_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2022-11-20 10:54:06,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:54:06,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:54:06,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:54:06,566 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:54:06,567 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:54:06,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-20 10:54:09,708 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:54:09,926 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:54:09,927 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-20 10:54:09,934 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/data/1fe59a6eb/56250d0729b348e4ab5039481192e4c8/FLAG2cf737a56 [2022-11-20 10:54:09,949 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/data/1fe59a6eb/56250d0729b348e4ab5039481192e4c8 [2022-11-20 10:54:09,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:54:09,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:54:09,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:09,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:54:09,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:54:09,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:09" (1/1) ... [2022-11-20 10:54:09,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7f34bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:09, skipping insertion in model container [2022-11-20 10:54:09,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:09" (1/1) ... [2022-11-20 10:54:09,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:54:09,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:54:10,179 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-20 10:54:10,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:10,197 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:54:10,224 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-20 10:54:10,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:10,242 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:54:10,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10 WrapperNode [2022-11-20 10:54:10,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:10,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:10,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:54:10,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:54:10,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,297 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 355 [2022-11-20 10:54:10,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:10,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:54:10,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:54:10,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:54:10,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:54:10,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:54:10,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:54:10,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:54:10,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (1/1) ... [2022-11-20 10:54:10,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:10,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:10,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:54:10,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:54:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:54:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:54:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:54:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:54:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:54:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:54:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:54:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:54:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:54:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:54:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:54:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:54:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:54:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:54:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:54:10,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:54:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:54:10,445 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:54:10,615 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:54:10,618 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:54:11,434 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:54:11,794 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:54:11,794 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 10:54:11,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:11 BoogieIcfgContainer [2022-11-20 10:54:11,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:54:11,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:54:11,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:54:11,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:54:11,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:54:09" (1/3) ... [2022-11-20 10:54:11,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d69cede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:11, skipping insertion in model container [2022-11-20 10:54:11,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:10" (2/3) ... [2022-11-20 10:54:11,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d69cede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:11, skipping insertion in model container [2022-11-20 10:54:11,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:11" (3/3) ... [2022-11-20 10:54:11,814 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2022-11-20 10:54:11,823 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:54:11,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:54:11,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-20 10:54:11,835 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:54:12,011 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:54:12,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 281 transitions, 586 flow [2022-11-20 10:54:12,238 INFO L130 PetriNetUnfolder]: 19/278 cut-off events. [2022-11-20 10:54:12,240 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:54:12,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 19/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 208 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 238. Up to 2 conditions per place. [2022-11-20 10:54:12,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 281 transitions, 586 flow [2022-11-20 10:54:12,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 257 transitions, 529 flow [2022-11-20 10:54:12,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:54:12,285 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;@36b3303f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:54:12,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-20 10:54:12,310 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-20 10:54:12,310 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:54:12,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:12,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:12,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:12,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:12,318 INFO L85 PathProgramCache]: Analyzing trace with hash -139420048, now seen corresponding path program 1 times [2022-11-20 10:54:12,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:12,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526805153] [2022-11-20 10:54:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:12,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:12,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:12,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526805153] [2022-11-20 10:54:12,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526805153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:12,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:12,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:12,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942146360] [2022-11-20 10:54:12,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:12,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:12,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:12,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:12,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-20 10:54:12,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 257 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:12,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:12,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-20 10:54:12,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:13,722 INFO L130 PetriNetUnfolder]: 735/1433 cut-off events. [2022-11-20 10:54:13,722 INFO L131 PetriNetUnfolder]: For 206/210 co-relation queries the response was YES. [2022-11-20 10:54:13,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 1433 events. 735/1433 cut-off events. For 206/210 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6617 event pairs, 526 based on Foata normal form. 210/1093 useless extension candidates. Maximal degree in co-relation 1164. Up to 592 conditions per place. [2022-11-20 10:54:13,742 INFO L137 encePairwiseOnDemand]: 241/281 looper letters, 90 selfloop transitions, 14 changer transitions 6/284 dead transitions. [2022-11-20 10:54:13,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 284 transitions, 806 flow [2022-11-20 10:54:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:54:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1149 transitions. [2022-11-20 10:54:13,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177935943060498 [2022-11-20 10:54:13,766 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1149 transitions. [2022-11-20 10:54:13,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1149 transitions. [2022-11-20 10:54:13,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:13,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1149 transitions. [2022-11-20 10:54:13,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.8) internal successors, (1149), 5 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) [2022-11-20 10:54:13,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:13,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:13,793 INFO L175 Difference]: Start difference. First operand has 249 places, 257 transitions, 529 flow. Second operand 5 states and 1149 transitions. [2022-11-20 10:54:13,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 284 transitions, 806 flow [2022-11-20 10:54:13,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 788 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:54:13,809 INFO L231 Difference]: Finished difference. Result has 243 places, 242 transitions, 572 flow [2022-11-20 10:54:13,811 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=572, PETRI_PLACES=243, PETRI_TRANSITIONS=242} [2022-11-20 10:54:13,817 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -6 predicate places. [2022-11-20 10:54:13,817 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 242 transitions, 572 flow [2022-11-20 10:54:13,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:13,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:13,819 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:13,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:54:13,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash 145273245, now seen corresponding path program 1 times [2022-11-20 10:54:13,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:13,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976661177] [2022-11-20 10:54:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:13,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:14,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:14,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976661177] [2022-11-20 10:54:14,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976661177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:14,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655661520] [2022-11-20 10:54:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:14,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:14,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:14,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:14,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:54:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:14,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:54:14,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:14,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:14,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655661520] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:14,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:14,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:54:14,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609758597] [2022-11-20 10:54:14,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:14,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:54:14,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:14,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:54:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:54:14,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-20 10:54:14,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 242 transitions, 572 flow. Second operand has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:14,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:14,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-20 10:54:14,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:16,057 INFO L130 PetriNetUnfolder]: 1836/3425 cut-off events. [2022-11-20 10:54:16,057 INFO L131 PetriNetUnfolder]: For 143/153 co-relation queries the response was YES. [2022-11-20 10:54:16,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 3425 events. 1836/3425 cut-off events. For 143/153 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18828 event pairs, 1315 based on Foata normal form. 9/2089 useless extension candidates. Maximal degree in co-relation 5008. Up to 583 conditions per place. [2022-11-20 10:54:16,087 INFO L137 encePairwiseOnDemand]: 258/281 looper letters, 189 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2022-11-20 10:54:16,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 425 transitions, 1542 flow [2022-11-20 10:54:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:54:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:54:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3878 transitions. [2022-11-20 10:54:16,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7667062079873468 [2022-11-20 10:54:16,096 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3878 transitions. [2022-11-20 10:54:16,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3878 transitions. [2022-11-20 10:54:16,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:16,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3878 transitions. [2022-11-20 10:54:16,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 215.44444444444446) internal successors, (3878), 18 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:16,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:16,157 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:16,157 INFO L175 Difference]: Start difference. First operand has 243 places, 242 transitions, 572 flow. Second operand 18 states and 3878 transitions. [2022-11-20 10:54:16,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 425 transitions, 1542 flow [2022-11-20 10:54:16,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 425 transitions, 1534 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:54:16,167 INFO L231 Difference]: Finished difference. Result has 257 places, 284 transitions, 934 flow [2022-11-20 10:54:16,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=934, PETRI_PLACES=257, PETRI_TRANSITIONS=284} [2022-11-20 10:54:16,169 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 8 predicate places. [2022-11-20 10:54:16,169 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 284 transitions, 934 flow [2022-11-20 10:54:16,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:16,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:16,171 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:16,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:16,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 10:54:16,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:16,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 208504140, now seen corresponding path program 1 times [2022-11-20 10:54:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:16,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737733811] [2022-11-20 10:54:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:16,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:16,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737733811] [2022-11-20 10:54:16,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737733811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:16,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081352961] [2022-11-20 10:54:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:16,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:16,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:16,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:16,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:54:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:16,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:54:16,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:16,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:16,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081352961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:16,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:16,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:54:16,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096247471] [2022-11-20 10:54:16,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:16,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:16,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:16,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:54:16,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-20 10:54:16,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 284 transitions, 934 flow. Second operand has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:16,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:16,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-20 10:54:16,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:18,107 INFO L130 PetriNetUnfolder]: 1836/3413 cut-off events. [2022-11-20 10:54:18,107 INFO L131 PetriNetUnfolder]: For 295/305 co-relation queries the response was YES. [2022-11-20 10:54:18,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6844 conditions, 3413 events. 1836/3413 cut-off events. For 295/305 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18608 event pairs, 1315 based on Foata normal form. 12/2080 useless extension candidates. Maximal degree in co-relation 5431. Up to 2260 conditions per place. [2022-11-20 10:54:18,137 INFO L137 encePairwiseOnDemand]: 264/281 looper letters, 91 selfloop transitions, 43 changer transitions 0/308 dead transitions. [2022-11-20 10:54:18,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 308 transitions, 1205 flow [2022-11-20 10:54:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:54:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:54:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1511 transitions. [2022-11-20 10:54:18,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.768174885612608 [2022-11-20 10:54:18,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1511 transitions. [2022-11-20 10:54:18,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1511 transitions. [2022-11-20 10:54:18,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:18,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1511 transitions. [2022-11-20 10:54:18,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 215.85714285714286) internal successors, (1511), 7 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:18,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:18,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:18,152 INFO L175 Difference]: Start difference. First operand has 257 places, 284 transitions, 934 flow. Second operand 7 states and 1511 transitions. [2022-11-20 10:54:18,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 308 transitions, 1205 flow [2022-11-20 10:54:18,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 308 transitions, 1089 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 10:54:18,166 INFO L231 Difference]: Finished difference. Result has 251 places, 272 transitions, 823 flow [2022-11-20 10:54:18,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=251, PETRI_TRANSITIONS=272} [2022-11-20 10:54:18,169 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 2 predicate places. [2022-11-20 10:54:18,169 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 272 transitions, 823 flow [2022-11-20 10:54:18,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:18,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:18,172 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:18,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:18,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:18,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:18,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:18,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1853733808, now seen corresponding path program 2 times [2022-11-20 10:54:18,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:18,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136971589] [2022-11-20 10:54:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:18,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:18,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:18,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136971589] [2022-11-20 10:54:18,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136971589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:18,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002371379] [2022-11-20 10:54:18,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:54:18,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:18,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:18,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:18,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:54:18,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:54:18,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:18,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:54:18,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:54:19,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:54:19,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002371379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:19,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:19,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:54:19,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911972906] [2022-11-20 10:54:19,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:19,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:54:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:54:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:54:19,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-20 10:54:19,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 272 transitions, 823 flow. Second operand has 18 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:19,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:19,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-20 10:54:19,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:21,563 INFO L130 PetriNetUnfolder]: 1219/2696 cut-off events. [2022-11-20 10:54:21,563 INFO L131 PetriNetUnfolder]: For 315/322 co-relation queries the response was YES. [2022-11-20 10:54:21,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 2696 events. 1219/2696 cut-off events. For 315/322 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13991 event pairs, 770 based on Foata normal form. 6/2051 useless extension candidates. Maximal degree in co-relation 3846. Up to 300 conditions per place. [2022-11-20 10:54:21,591 INFO L137 encePairwiseOnDemand]: 249/281 looper letters, 234 selfloop transitions, 97 changer transitions 0/485 dead transitions. [2022-11-20 10:54:21,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 485 transitions, 2048 flow [2022-11-20 10:54:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 10:54:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 10:54:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9234 transitions. [2022-11-20 10:54:21,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6706369380492411 [2022-11-20 10:54:21,612 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9234 transitions. [2022-11-20 10:54:21,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9234 transitions. [2022-11-20 10:54:21,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:21,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9234 transitions. [2022-11-20 10:54:21,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 188.44897959183675) internal successors, (9234), 49 states have internal predecessors, (9234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 281.0) internal successors, (14050), 50 states have internal predecessors, (14050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,670 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 281.0) internal successors, (14050), 50 states have internal predecessors, (14050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,671 INFO L175 Difference]: Start difference. First operand has 251 places, 272 transitions, 823 flow. Second operand 49 states and 9234 transitions. [2022-11-20 10:54:21,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 485 transitions, 2048 flow [2022-11-20 10:54:21,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 485 transitions, 1979 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:54:21,681 INFO L231 Difference]: Finished difference. Result has 293 places, 308 transitions, 1158 flow [2022-11-20 10:54:21,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1158, PETRI_PLACES=293, PETRI_TRANSITIONS=308} [2022-11-20 10:54:21,682 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 44 predicate places. [2022-11-20 10:54:21,682 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 308 transitions, 1158 flow [2022-11-20 10:54:21,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:21,685 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:21,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:21,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:21,891 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:21,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1165664909, now seen corresponding path program 1 times [2022-11-20 10:54:21,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:21,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108859340] [2022-11-20 10:54:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:21,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:22,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:22,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108859340] [2022-11-20 10:54:22,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108859340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:22,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:22,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:22,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608146998] [2022-11-20 10:54:22,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:22,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:22,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:22,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 281 [2022-11-20 10:54:22,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 308 transitions, 1158 flow. Second operand has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:22,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 281 [2022-11-20 10:54:22,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:22,944 INFO L130 PetriNetUnfolder]: 1059/2462 cut-off events. [2022-11-20 10:54:22,944 INFO L131 PetriNetUnfolder]: For 534/541 co-relation queries the response was YES. [2022-11-20 10:54:22,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 2462 events. 1059/2462 cut-off events. For 534/541 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12555 event pairs, 668 based on Foata normal form. 16/1928 useless extension candidates. Maximal degree in co-relation 4398. Up to 1607 conditions per place. [2022-11-20 10:54:22,962 INFO L137 encePairwiseOnDemand]: 270/281 looper letters, 124 selfloop transitions, 7 changer transitions 0/319 dead transitions. [2022-11-20 10:54:22,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 319 transitions, 1448 flow [2022-11-20 10:54:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:54:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:54:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1466 transitions. [2022-11-20 10:54:22,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7452974072191154 [2022-11-20 10:54:22,967 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1466 transitions. [2022-11-20 10:54:22,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1466 transitions. [2022-11-20 10:54:22,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:22,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1466 transitions. [2022-11-20 10:54:22,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.42857142857142) internal successors, (1466), 7 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,976 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,976 INFO L175 Difference]: Start difference. First operand has 293 places, 308 transitions, 1158 flow. Second operand 7 states and 1466 transitions. [2022-11-20 10:54:22,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 319 transitions, 1448 flow [2022-11-20 10:54:22,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 319 transitions, 1325 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-20 10:54:22,986 INFO L231 Difference]: Finished difference. Result has 285 places, 308 transitions, 1058 flow [2022-11-20 10:54:22,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1058, PETRI_PLACES=285, PETRI_TRANSITIONS=308} [2022-11-20 10:54:22,987 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 36 predicate places. [2022-11-20 10:54:22,987 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 308 transitions, 1058 flow [2022-11-20 10:54:22,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:22,989 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:22,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:54:22,989 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:22,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1296105903, now seen corresponding path program 1 times [2022-11-20 10:54:22,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:22,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030987046] [2022-11-20 10:54:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:22,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:23,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:23,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030987046] [2022-11-20 10:54:23,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030987046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:23,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490781378] [2022-11-20 10:54:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:23,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:23,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:23,363 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:23,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:54:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:54:23,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:23,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:23,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490781378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:23,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:23,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 10:54:23,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581249603] [2022-11-20 10:54:23,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:23,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:54:23,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:23,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:54:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:54:23,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-20 10:54:23,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 308 transitions, 1058 flow. Second operand has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:23,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-20 10:54:23,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:27,296 INFO L130 PetriNetUnfolder]: 2451/5453 cut-off events. [2022-11-20 10:54:27,296 INFO L131 PetriNetUnfolder]: For 1222/1237 co-relation queries the response was YES. [2022-11-20 10:54:27,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 5453 events. 2451/5453 cut-off events. For 1222/1237 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 31786 event pairs, 1548 based on Foata normal form. 16/4199 useless extension candidates. Maximal degree in co-relation 11058. Up to 1121 conditions per place. [2022-11-20 10:54:27,336 INFO L137 encePairwiseOnDemand]: 262/281 looper letters, 480 selfloop transitions, 160 changer transitions 0/820 dead transitions. [2022-11-20 10:54:27,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 820 transitions, 4120 flow [2022-11-20 10:54:27,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 10:54:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 10:54:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9500 transitions. [2022-11-20 10:54:27,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683597541248787 [2022-11-20 10:54:27,357 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 9500 transitions. [2022-11-20 10:54:27,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 9500 transitions. [2022-11-20 10:54:27,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:27,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 9500 transitions. [2022-11-20 10:54:27,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 215.9090909090909) internal successors, (9500), 44 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:27,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 281.0) internal successors, (12645), 45 states have internal predecessors, (12645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:27,411 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 281.0) internal successors, (12645), 45 states have internal predecessors, (12645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:27,411 INFO L175 Difference]: Start difference. First operand has 285 places, 308 transitions, 1058 flow. Second operand 44 states and 9500 transitions. [2022-11-20 10:54:27,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 820 transitions, 4120 flow [2022-11-20 10:54:27,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 820 transitions, 4110 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:54:27,432 INFO L231 Difference]: Finished difference. Result has 333 places, 401 transitions, 2058 flow [2022-11-20 10:54:27,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2058, PETRI_PLACES=333, PETRI_TRANSITIONS=401} [2022-11-20 10:54:27,435 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 84 predicate places. [2022-11-20 10:54:27,435 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 401 transitions, 2058 flow [2022-11-20 10:54:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:27,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:27,438 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:27,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:27,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:54:27,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash 788184584, now seen corresponding path program 1 times [2022-11-20 10:54:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:27,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250257165] [2022-11-20 10:54:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:27,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:27,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:27,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250257165] [2022-11-20 10:54:27,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250257165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:27,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599222189] [2022-11-20 10:54:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:27,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:27,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:27,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:27,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:54:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:28,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:54:28,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:28,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:28,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599222189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:28,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:28,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 10:54:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347244695] [2022-11-20 10:54:28,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:28,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 281 [2022-11-20 10:54:28,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 401 transitions, 2058 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:28,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:28,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 281 [2022-11-20 10:54:28,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:29,140 INFO L130 PetriNetUnfolder]: 1457/3955 cut-off events. [2022-11-20 10:54:29,140 INFO L131 PetriNetUnfolder]: For 1324/1339 co-relation queries the response was YES. [2022-11-20 10:54:29,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7783 conditions, 3955 events. 1457/3955 cut-off events. For 1324/1339 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 21963 event pairs, 792 based on Foata normal form. 0/3483 useless extension candidates. Maximal degree in co-relation 7159. Up to 2230 conditions per place. [2022-11-20 10:54:29,165 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 18 selfloop transitions, 3 changer transitions 0/399 dead transitions. [2022-11-20 10:54:29,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 399 transitions, 2092 flow [2022-11-20 10:54:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:54:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 947 transitions. [2022-11-20 10:54:29,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8425266903914591 [2022-11-20 10:54:29,168 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 947 transitions. [2022-11-20 10:54:29,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 947 transitions. [2022-11-20 10:54:29,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:29,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 947 transitions. [2022-11-20 10:54:29,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,173 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,173 INFO L175 Difference]: Start difference. First operand has 333 places, 401 transitions, 2058 flow. Second operand 4 states and 947 transitions. [2022-11-20 10:54:29,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 399 transitions, 2092 flow [2022-11-20 10:54:29,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 399 transitions, 1990 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-20 10:54:29,190 INFO L231 Difference]: Finished difference. Result has 319 places, 399 transitions, 1954 flow [2022-11-20 10:54:29,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1954, PETRI_PLACES=319, PETRI_TRANSITIONS=399} [2022-11-20 10:54:29,192 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 70 predicate places. [2022-11-20 10:54:29,192 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 399 transitions, 1954 flow [2022-11-20 10:54:29,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:29,193 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:29,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:29,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 10:54:29,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:29,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:29,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1531177387, now seen corresponding path program 1 times [2022-11-20 10:54:29,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:29,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834380273] [2022-11-20 10:54:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:29,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:29,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:29,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834380273] [2022-11-20 10:54:29,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834380273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:29,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:29,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246214576] [2022-11-20 10:54:29,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:29,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:29,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:29,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:29,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 281 [2022-11-20 10:54:29,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 399 transitions, 1954 flow. Second operand has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:29,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 281 [2022-11-20 10:54:29,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:31,314 INFO L130 PetriNetUnfolder]: 2092/5980 cut-off events. [2022-11-20 10:54:31,314 INFO L131 PetriNetUnfolder]: For 2170/2200 co-relation queries the response was YES. [2022-11-20 10:54:31,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12055 conditions, 5980 events. 2092/5980 cut-off events. For 2170/2200 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 39966 event pairs, 1231 based on Foata normal form. 256/5604 useless extension candidates. Maximal degree in co-relation 11245. Up to 2308 conditions per place. [2022-11-20 10:54:31,352 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 194 selfloop transitions, 30 changer transitions 18/457 dead transitions. [2022-11-20 10:54:31,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 457 transitions, 2737 flow [2022-11-20 10:54:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:54:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:54:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1876 transitions. [2022-11-20 10:54:31,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.741795175958877 [2022-11-20 10:54:31,357 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1876 transitions. [2022-11-20 10:54:31,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1876 transitions. [2022-11-20 10:54:31,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:31,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1876 transitions. [2022-11-20 10:54:31,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.44444444444446) internal successors, (1876), 9 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:31,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:31,367 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:31,368 INFO L175 Difference]: Start difference. First operand has 319 places, 399 transitions, 1954 flow. Second operand 9 states and 1876 transitions. [2022-11-20 10:54:31,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 457 transitions, 2737 flow [2022-11-20 10:54:31,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 457 transitions, 2731 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:54:31,505 INFO L231 Difference]: Finished difference. Result has 325 places, 400 transitions, 2021 flow [2022-11-20 10:54:31,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2021, PETRI_PLACES=325, PETRI_TRANSITIONS=400} [2022-11-20 10:54:31,510 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 76 predicate places. [2022-11-20 10:54:31,511 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 400 transitions, 2021 flow [2022-11-20 10:54:31,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:31,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:31,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:31,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:54:31,512 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1990779453, now seen corresponding path program 1 times [2022-11-20 10:54:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:31,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504723639] [2022-11-20 10:54:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:31,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504723639] [2022-11-20 10:54:31,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504723639] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:31,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96071472] [2022-11-20 10:54:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:31,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:31,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:31,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:54:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:32,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:54:32,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:54:32,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:32,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96071472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:32,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:32,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 10:54:32,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682049217] [2022-11-20 10:54:32,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:32,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:32,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:32,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:32,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:54:32,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 281 [2022-11-20 10:54:32,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 400 transitions, 2021 flow. Second operand has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:32,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:32,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 281 [2022-11-20 10:54:32,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:33,679 INFO L130 PetriNetUnfolder]: 1557/5161 cut-off events. [2022-11-20 10:54:33,680 INFO L131 PetriNetUnfolder]: For 1751/1781 co-relation queries the response was YES. [2022-11-20 10:54:33,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 5161 events. 1557/5161 cut-off events. For 1751/1781 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 34942 event pairs, 878 based on Foata normal form. 0/4841 useless extension candidates. Maximal degree in co-relation 9376. Up to 2534 conditions per place. [2022-11-20 10:54:33,704 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 9 selfloop transitions, 3 changer transitions 69/398 dead transitions. [2022-11-20 10:54:33,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 398 transitions, 2063 flow [2022-11-20 10:54:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:54:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 945 transitions. [2022-11-20 10:54:33,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8407473309608541 [2022-11-20 10:54:33,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 945 transitions. [2022-11-20 10:54:33,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 945 transitions. [2022-11-20 10:54:33,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:33,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 945 transitions. [2022-11-20 10:54:33,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:33,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:33,711 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:33,712 INFO L175 Difference]: Start difference. First operand has 325 places, 400 transitions, 2021 flow. Second operand 4 states and 945 transitions. [2022-11-20 10:54:33,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 398 transitions, 2063 flow [2022-11-20 10:54:33,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 398 transitions, 2029 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:54:33,732 INFO L231 Difference]: Finished difference. Result has 323 places, 329 transitions, 1816 flow [2022-11-20 10:54:33,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1816, PETRI_PLACES=323, PETRI_TRANSITIONS=329} [2022-11-20 10:54:33,734 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 74 predicate places. [2022-11-20 10:54:33,734 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 329 transitions, 1816 flow [2022-11-20 10:54:33,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:33,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:33,735 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:33,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:33,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:33,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:33,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:33,942 INFO L85 PathProgramCache]: Analyzing trace with hash 493589073, now seen corresponding path program 2 times [2022-11-20 10:54:33,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:33,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667063531] [2022-11-20 10:54:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:33,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:35,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:35,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667063531] [2022-11-20 10:54:35,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667063531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:35,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440460850] [2022-11-20 10:54:35,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:54:35,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:35,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:35,105 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:35,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:54:35,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:54:35,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:35,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:54:35,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-20 10:54:35,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-20 10:54:35,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440460850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:35,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:35,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-20 10:54:35,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465499313] [2022-11-20 10:54:35,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:35,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 10:54:35,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:35,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 10:54:35,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 10:54:35,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-20 10:54:35,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 329 transitions, 1816 flow. Second operand has 38 states, 38 states have (on average 184.76315789473685) internal successors, (7021), 38 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:35,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:35,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-20 10:54:35,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:40,376 INFO L130 PetriNetUnfolder]: 35/1291 cut-off events. [2022-11-20 10:54:40,377 INFO L131 PetriNetUnfolder]: For 2099/2099 co-relation queries the response was YES. [2022-11-20 10:54:40,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 1291 events. 35/1291 cut-off events. For 2099/2099 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4949 event pairs, 0 based on Foata normal form. 6/1297 useless extension candidates. Maximal degree in co-relation 2967. Up to 112 conditions per place. [2022-11-20 10:54:40,382 INFO L137 encePairwiseOnDemand]: 255/281 looper letters, 253 selfloop transitions, 269 changer transitions 0/627 dead transitions. [2022-11-20 10:54:40,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 627 transitions, 3977 flow [2022-11-20 10:54:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-20 10:54:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-11-20 10:54:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 24961 transitions. [2022-11-20 10:54:40,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6579939369974958 [2022-11-20 10:54:40,412 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 24961 transitions. [2022-11-20 10:54:40,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 24961 transitions. [2022-11-20 10:54:40,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:40,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 24961 transitions. [2022-11-20 10:54:40,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 184.8962962962963) internal successors, (24961), 135 states have internal predecessors, (24961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:40,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 281.0) internal successors, (38216), 136 states have internal predecessors, (38216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:40,519 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 281.0) internal successors, (38216), 136 states have internal predecessors, (38216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:40,519 INFO L175 Difference]: Start difference. First operand has 323 places, 329 transitions, 1816 flow. Second operand 135 states and 24961 transitions. [2022-11-20 10:54:40,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 627 transitions, 3977 flow [2022-11-20 10:54:40,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 627 transitions, 3888 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:54:40,542 INFO L231 Difference]: Finished difference. Result has 391 places, 424 transitions, 2769 flow [2022-11-20 10:54:40,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=2769, PETRI_PLACES=391, PETRI_TRANSITIONS=424} [2022-11-20 10:54:40,544 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 142 predicate places. [2022-11-20 10:54:40,544 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 424 transitions, 2769 flow [2022-11-20 10:54:40,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 184.76315789473685) internal successors, (7021), 38 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:40,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:40,547 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:40,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:54:40,753 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:40,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1879606067, now seen corresponding path program 1 times [2022-11-20 10:54:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:40,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282119345] [2022-11-20 10:54:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:40,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:42,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:42,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282119345] [2022-11-20 10:54:42,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282119345] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:42,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669745651] [2022-11-20 10:54:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:42,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:42,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:42,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:54:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 10:54:42,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:42,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:43,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669745651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:43,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:43,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 71 [2022-11-20 10:54:43,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888283495] [2022-11-20 10:54:43,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:43,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-20 10:54:43,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:43,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-20 10:54:43,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2022-11-20 10:54:43,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-20 10:54:43,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 424 transitions, 2769 flow. Second operand has 72 states, 72 states have (on average 204.44444444444446) internal successors, (14720), 72 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:43,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:43,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-20 10:54:43,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:48,402 INFO L130 PetriNetUnfolder]: 71/2226 cut-off events. [2022-11-20 10:54:48,402 INFO L131 PetriNetUnfolder]: For 6068/6068 co-relation queries the response was YES. [2022-11-20 10:54:48,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5542 conditions, 2226 events. 71/2226 cut-off events. For 6068/6068 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8861 event pairs, 0 based on Foata normal form. 18/2244 useless extension candidates. Maximal degree in co-relation 5516. Up to 217 conditions per place. [2022-11-20 10:54:48,410 INFO L137 encePairwiseOnDemand]: 263/281 looper letters, 497 selfloop transitions, 380 changer transitions 0/1066 dead transitions. [2022-11-20 10:54:48,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1066 transitions, 8526 flow [2022-11-20 10:54:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-20 10:54:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-11-20 10:54:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 21799 transitions. [2022-11-20 10:54:48,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7459280043799617 [2022-11-20 10:54:48,441 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 21799 transitions. [2022-11-20 10:54:48,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 21799 transitions. [2022-11-20 10:54:48,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:48,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 21799 transitions. [2022-11-20 10:54:48,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 209.60576923076923) internal successors, (21799), 104 states have internal predecessors, (21799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:48,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 281.0) internal successors, (29505), 105 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:48,535 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 281.0) internal successors, (29505), 105 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:48,535 INFO L175 Difference]: Start difference. First operand has 391 places, 424 transitions, 2769 flow. Second operand 104 states and 21799 transitions. [2022-11-20 10:54:48,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1066 transitions, 8526 flow [2022-11-20 10:54:48,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1066 transitions, 7958 flow, removed 162 selfloop flow, removed 28 redundant places. [2022-11-20 10:54:48,591 INFO L231 Difference]: Finished difference. Result has 485 places, 627 transitions, 5327 flow [2022-11-20 10:54:48,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=5327, PETRI_PLACES=485, PETRI_TRANSITIONS=627} [2022-11-20 10:54:48,593 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 236 predicate places. [2022-11-20 10:54:48,593 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 627 transitions, 5327 flow [2022-11-20 10:54:48,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 204.44444444444446) internal successors, (14720), 72 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:48,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:48,597 INFO L209 CegarLoopForPetriNet]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:48,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:48,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:54:48,803 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 10:54:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash 17224237, now seen corresponding path program 2 times [2022-11-20 10:54:48,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:48,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567989096] [2022-11-20 10:54:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:48,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:53,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:53,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567989096] [2022-11-20 10:54:53,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567989096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:53,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078480746] [2022-11-20 10:54:53,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:54:53,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:53,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:53,387 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:53,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:54:53,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:54:53,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:53,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:54:53,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-20 10:54:54,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-20 10:54:54,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078480746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:54,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:54,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 7, 7] total 77 [2022-11-20 10:54:54,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577969433] [2022-11-20 10:54:54,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:54,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-20 10:54:54,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:54,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-20 10:54:54,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=4593, Unknown=0, NotChecked=0, Total=6006 [2022-11-20 10:54:54,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-20 10:54:54,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 627 transitions, 5327 flow. Second operand has 78 states, 78 states have (on average 184.73076923076923) internal successors, (14409), 78 states have internal predecessors, (14409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:54,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:54,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-20 10:54:54,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:10,863 INFO L130 PetriNetUnfolder]: 75/2340 cut-off events. [2022-11-20 10:55:10,864 INFO L131 PetriNetUnfolder]: For 6583/6583 co-relation queries the response was YES. [2022-11-20 10:55:10,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 2340 events. 75/2340 cut-off events. For 6583/6583 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9396 event pairs, 0 based on Foata normal form. 2/2342 useless extension candidates. Maximal degree in co-relation 6235. Up to 209 conditions per place. [2022-11-20 10:55:10,876 INFO L137 encePairwiseOnDemand]: 256/281 looper letters, 0 selfloop transitions, 0 changer transitions 1258/1258 dead transitions. [2022-11-20 10:55:10,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 1258 transitions, 10361 flow [2022-11-20 10:55:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2022-11-20 10:55:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2022-11-20 10:55:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 54337 transitions. [2022-11-20 10:55:10,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6577214515699519 [2022-11-20 10:55:10,926 INFO L72 ComplementDD]: Start complementDD. Operand 294 states and 54337 transitions. [2022-11-20 10:55:10,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 54337 transitions. [2022-11-20 10:55:10,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:10,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 294 states and 54337 transitions. [2022-11-20 10:55:11,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 295 states, 294 states have (on average 184.81972789115648) internal successors, (54337), 294 states have internal predecessors, (54337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:11,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 295 states, 295 states have (on average 281.0) internal successors, (82895), 295 states have internal predecessors, (82895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:11,103 INFO L81 ComplementDD]: Finished complementDD. Result has 295 states, 295 states have (on average 281.0) internal successors, (82895), 295 states have internal predecessors, (82895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:11,104 INFO L175 Difference]: Start difference. First operand has 485 places, 627 transitions, 5327 flow. Second operand 294 states and 54337 transitions. [2022-11-20 10:55:11,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 777 places, 1258 transitions, 10361 flow [2022-11-20 10:55:11,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 1258 transitions, 9859 flow, removed 3 selfloop flow, removed 79 redundant places. [2022-11-20 10:55:11,195 INFO L231 Difference]: Finished difference. Result has 698 places, 0 transitions, 0 flow [2022-11-20 10:55:11,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=294, PETRI_FLOW=0, PETRI_PLACES=698, PETRI_TRANSITIONS=0} [2022-11-20 10:55:11,196 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 449 predicate places. [2022-11-20 10:55:11,197 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 0 transitions, 0 flow [2022-11-20 10:55:11,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 184.73076923076923) internal successors, (14409), 78 states have internal predecessors, (14409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:11,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2022-11-20 10:55:11,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-11-20 10:55:11,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-11-20 10:55:11,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-11-20 10:55:11,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-11-20 10:55:11,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-11-20 10:55:11,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-11-20 10:55:11,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-11-20 10:55:11,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-11-20 10:55:11,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-11-20 10:55:11,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-11-20 10:55:11,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-11-20 10:55:11,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-11-20 10:55:11,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-11-20 10:55:11,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-11-20 10:55:11,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-11-20 10:55:11,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-11-20 10:55:11,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-11-20 10:55:11,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-11-20 10:55:11,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-11-20 10:55:11,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-11-20 10:55:11,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-11-20 10:55:11,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2022-11-20 10:55:11,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2022-11-20 10:55:11,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2022-11-20 10:55:11,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-11-20 10:55:11,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-11-20 10:55:11,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-11-20 10:55:11,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-11-20 10:55:11,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-11-20 10:55:11,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-11-20 10:55:11,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-11-20 10:55:11,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-11-20 10:55:11,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-11-20 10:55:11,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-11-20 10:55:11,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-11-20 10:55:11,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-11-20 10:55:11,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-11-20 10:55:11,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-11-20 10:55:11,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-11-20 10:55:11,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-11-20 10:55:11,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:11,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:11,419 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:11,425 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:55:11,426 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:55:11,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:55:11 BasicIcfg [2022-11-20 10:55:11,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:55:11,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:55:11,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:55:11,434 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:55:11,434 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:11" (3/4) ... [2022-11-20 10:55:11,437 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:55:11,443 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 10:55:11,444 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 10:55:11,444 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 10:55:11,452 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-11-20 10:55:11,452 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:55:11,453 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:55:11,453 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:55:11,529 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:55:11,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:55:11,530 INFO L158 Benchmark]: Toolchain (without parser) took 61576.75ms. Allocated memory was 142.6MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 96.6MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-20 10:55:11,530 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 112.3MB in the end (delta: 102.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:11,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.64ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 84.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 10:55:11,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.92ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 81.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:11,531 INFO L158 Benchmark]: Boogie Preprocessor took 65.66ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 78.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:11,532 INFO L158 Benchmark]: RCFGBuilder took 1434.11ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 78.5MB in the beginning and 139.2MB in the end (delta: -60.7MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2022-11-20 10:55:11,532 INFO L158 Benchmark]: TraceAbstraction took 59628.89ms. Allocated memory was 209.7MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 139.2MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-20 10:55:11,532 INFO L158 Benchmark]: Witness Printer took 95.75ms. Allocated memory is still 3.6GB. Free memory was 1.9GB in the beginning and 1.8GB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:55:11,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 112.3MB in the end (delta: 102.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.64ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 84.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.92ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 81.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.66ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 78.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1434.11ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 78.5MB in the beginning and 139.2MB in the end (delta: -60.7MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * TraceAbstraction took 59628.89ms. Allocated memory was 209.7MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 139.2MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 95.75ms. Allocated memory is still 3.6GB. Free memory was 1.9GB in the beginning and 1.8GB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 308 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 59.4s, OverallIterations: 12, TraceHistogramMax: 35, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 40.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12724 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12724 mSDsluCounter, 1304 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1102 mSDsCounter, 1572 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5891 IncrementalHoareTripleChecker+Invalid, 7463 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1572 mSolverCounterUnsat, 202 mSDtfsCounter, 5891 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3780 GetRequests, 2909 SyntacticMatches, 15 SemanticMatches, 856 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67449 ImplicationChecksByTransitivity, 24.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5327occurred in iteration=11, InterpolantAutomatonStates: 680, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 3704 NumberOfCodeBlocks, 3236 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 4946 ConstructedInterpolants, 0 QuantifiedInterpolants, 10494 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2704 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 11960/22782 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:55:11,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b4922c-a1a6-4a84-9d4b-ec2c709c7fcd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE