./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R --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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- 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-38b53e6 [2022-11-25 17:08:49,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:08:49,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:08:49,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:08:49,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:08:49,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:08:49,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:08:49,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:08:49,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:08:49,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:08:49,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:08:49,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:08:49,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:08:49,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:08:49,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:08:49,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:08:49,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:08:49,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:08:49,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:08:49,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:08:49,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:08:49,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:08:49,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:08:49,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:08:49,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:08:49,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:08:49,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:08:49,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:08:49,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:08:49,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:08:49,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:08:49,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:08:49,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:08:49,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:08:49,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:08:49,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:08:49,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:08:49,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:08:49,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:08:49,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:08:49,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:08:49,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:08:49,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:08:49,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:08:49,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:08:49,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:08:49,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:08:49,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:08:49,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:08:49,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:08:49,293 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:08:49,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:08:49,294 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:08:49,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:08:49,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:08:49,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:08:49,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:08:49,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:08:49,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:08:49,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:08:49,296 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:08:49,296 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:08:49,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:08:49,296 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:08:49,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:08:49,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:08:49,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:08:49,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:08:49,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:08:49,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:08:49,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:08:49,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:08:49,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:08:49,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:08:49,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:08:49,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:08:49,299 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:08:49,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:08:49,299 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2022-11-25 17:08:49,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:08:49,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:08:49,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:08:49,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:08:49,570 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:08:49,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-25 17:08:52,714 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:08:52,984 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:08:52,984 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-25 17:08:52,998 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/data/56bcaba37/cbe98a59ddec4dfeb8e0cea13f0c7ae1/FLAG2b5911642 [2022-11-25 17:08:53,017 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/data/56bcaba37/cbe98a59ddec4dfeb8e0cea13f0c7ae1 [2022-11-25 17:08:53,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:08:53,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:08:53,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:08:53,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:08:53,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:08:53,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5054bbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53, skipping insertion in model container [2022-11-25 17:08:53,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:08:53,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:08:53,547 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_1b2dbab1-43f5-48e4-85fc-dc253be6af00/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-25 17:08:53,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:08:53,589 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:08:53,631 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_1b2dbab1-43f5-48e4-85fc-dc253be6af00/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-25 17:08:53,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:08:53,722 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:08:53,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53 WrapperNode [2022-11-25 17:08:53,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:08:53,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:08:53,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:08:53,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:08:53,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,814 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 200 [2022-11-25 17:08:53,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:08:53,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:08:53,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:08:53,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:08:53,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,876 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:08:53,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:08:53,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:08:53,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:08:53,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (1/1) ... [2022-11-25 17:08:53,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:08:53,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:08:53,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:08:53,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:08:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:08:53,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:08:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:08:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:08:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:08:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:08:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 17:08:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 17:08:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:08:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:08:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:08:53,973 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:08:54,127 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:08:54,129 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:08:54,576 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:08:54,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:08:54,585 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-25 17:08:54,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:08:54 BoogieIcfgContainer [2022-11-25 17:08:54,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:08:54,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:08:54,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:08:54,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:08:54,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:08:53" (1/3) ... [2022-11-25 17:08:54,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba48980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:08:54, skipping insertion in model container [2022-11-25 17:08:54,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:53" (2/3) ... [2022-11-25 17:08:54,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba48980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:08:54, skipping insertion in model container [2022-11-25 17:08:54,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:08:54" (3/3) ... [2022-11-25 17:08:54,596 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2022-11-25 17:08:54,604 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:08:54,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:08:54,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-25 17:08:54,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:08:54,700 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 17:08:54,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2022-11-25 17:08:54,861 INFO L130 PetriNetUnfolder]: 45/302 cut-off events. [2022-11-25 17:08:54,861 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-25 17:08:54,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 302 events. 45/302 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1036 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2022-11-25 17:08:54,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2022-11-25 17:08:54,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 448 flow [2022-11-25 17:08:54,891 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:08:54,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 220 transitions, 448 flow [2022-11-25 17:08:54,918 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 220 transitions, 448 flow [2022-11-25 17:08:54,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 220 transitions, 448 flow [2022-11-25 17:08:54,998 INFO L130 PetriNetUnfolder]: 44/299 cut-off events. [2022-11-25 17:08:54,999 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-25 17:08:55,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 299 events. 44/299 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1027 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2022-11-25 17:08:55,008 INFO L119 LiptonReduction]: Number of co-enabled transitions 13706 [2022-11-25 17:08:59,736 INFO L134 LiptonReduction]: Checked pairs total: 22834 [2022-11-25 17:08:59,737 INFO L136 LiptonReduction]: Total number of compositions: 215 [2022-11-25 17:08:59,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:08:59,774 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;@5947dca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:08:59,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-25 17:08:59,778 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:08:59,779 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:08:59,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:59,781 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:08:59,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:08:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash 28481, now seen corresponding path program 1 times [2022-11-25 17:08:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:08:59,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228285609] [2022-11-25 17:08:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:08:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:00,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:00,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228285609] [2022-11-25 17:09:00,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228285609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:00,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:00,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:09:00,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015817217] [2022-11-25 17:09:00,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:00,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:00,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:00,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 438 [2022-11-25 17:09:00,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 80 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2022-11-25 17:09:00,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:00,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 438 [2022-11-25 17:09:00,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:00,310 INFO L130 PetriNetUnfolder]: 438/968 cut-off events. [2022-11-25 17:09:00,310 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:09:00,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1838 conditions, 968 events. 438/968 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5409 event pairs, 396 based on Foata normal form. 152/854 useless extension candidates. Maximal degree in co-relation 1770. Up to 863 conditions per place. [2022-11-25 17:09:00,325 INFO L137 encePairwiseOnDemand]: 411/438 looper letters, 47 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2022-11-25 17:09:00,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 222 flow [2022-11-25 17:09:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2022-11-25 17:09:00,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4863013698630137 [2022-11-25 17:09:00,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2022-11-25 17:09:00,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2022-11-25 17:09:00,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:00,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2022-11-25 17:09:00,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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) [2022-11-25 17:09:00,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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) [2022-11-25 17:09:00,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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) [2022-11-25 17:09:00,369 INFO L175 Difference]: Start difference. First operand has 59 places, 80 transitions, 168 flow. Second operand 3 states and 639 transitions. [2022-11-25 17:09:00,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 222 flow [2022-11-25 17:09:00,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:09:00,375 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 136 flow [2022-11-25 17:09:00,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2022-11-25 17:09:00,380 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2022-11-25 17:09:00,381 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 136 flow [2022-11-25 17:09:00,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2022-11-25 17:09:00,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:00,382 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:09:00,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:09:00,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:09:00,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:00,383 INFO L85 PathProgramCache]: Analyzing trace with hash 884918, now seen corresponding path program 1 times [2022-11-25 17:09:00,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:00,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870624749] [2022-11-25 17:09:00,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:00,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:00,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:00,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870624749] [2022-11-25 17:09:00,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870624749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:00,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:00,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:00,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400706742] [2022-11-25 17:09:00,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:00,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:00,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:00,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:00,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:00,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 438 [2022-11-25 17:09:00,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2022-11-25 17:09:00,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:00,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 438 [2022-11-25 17:09:00,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:00,630 INFO L130 PetriNetUnfolder]: 438/967 cut-off events. [2022-11-25 17:09:00,631 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:09:00,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1843 conditions, 967 events. 438/967 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5397 event pairs, 396 based on Foata normal form. 0/702 useless extension candidates. Maximal degree in co-relation 1831. Up to 862 conditions per place. [2022-11-25 17:09:00,636 INFO L137 encePairwiseOnDemand]: 436/438 looper letters, 47 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2022-11-25 17:09:00,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 228 flow [2022-11-25 17:09:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:00,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2022-11-25 17:09:00,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2022-11-25 17:09:00,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2022-11-25 17:09:00,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2022-11-25 17:09:00,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:00,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2022-11-25 17:09:00,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 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) [2022-11-25 17:09:00,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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) [2022-11-25 17:09:00,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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) [2022-11-25 17:09:00,645 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 136 flow. Second operand 3 states and 612 transitions. [2022-11-25 17:09:00,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 228 flow [2022-11-25 17:09:00,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 224 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:00,647 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 130 flow [2022-11-25 17:09:00,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2022-11-25 17:09:00,647 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2022-11-25 17:09:00,647 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 130 flow [2022-11-25 17:09:00,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2022-11-25 17:09:00,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:00,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:09:00,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:09:00,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:09:00,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:00,649 INFO L85 PathProgramCache]: Analyzing trace with hash 595084866, now seen corresponding path program 1 times [2022-11-25 17:09:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:00,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174353237] [2022-11-25 17:09:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:00,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:00,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:00,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174353237] [2022-11-25 17:09:00,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174353237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:09:00,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964985635] [2022-11-25 17:09:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:00,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:09:00,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:09:00,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:09:00,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:09:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:00,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:09:00,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:09:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:00,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:09:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:00,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964985635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:09:00,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:09:00,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:09:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291227729] [2022-11-25 17:09:00,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:09:00,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:09:00,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:09:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:09:01,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 438 [2022-11-25 17:09:01,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 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) [2022-11-25 17:09:01,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:01,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 438 [2022-11-25 17:09:01,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:01,260 INFO L130 PetriNetUnfolder]: 438/970 cut-off events. [2022-11-25 17:09:01,260 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:09:01,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 970 events. 438/970 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5384 event pairs, 396 based on Foata normal form. 0/705 useless extension candidates. Maximal degree in co-relation 1842. Up to 862 conditions per place. [2022-11-25 17:09:01,265 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 46 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2022-11-25 17:09:01,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 244 flow [2022-11-25 17:09:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:09:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:09:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1176 transitions. [2022-11-25 17:09:01,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2022-11-25 17:09:01,270 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1176 transitions. [2022-11-25 17:09:01,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1176 transitions. [2022-11-25 17:09:01,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:01,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1176 transitions. [2022-11-25 17:09:01,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 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) [2022-11-25 17:09:01,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 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) [2022-11-25 17:09:01,280 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 438.0) internal successors, (3066), 7 states have internal predecessors, (3066), 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) [2022-11-25 17:09:01,280 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 130 flow. Second operand 6 states and 1176 transitions. [2022-11-25 17:09:01,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 244 flow [2022-11-25 17:09:01,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:01,283 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 165 flow [2022-11-25 17:09:01,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2022-11-25 17:09:01,285 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2022-11-25 17:09:01,285 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 165 flow [2022-11-25 17:09:01,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 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) [2022-11-25 17:09:01,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:01,287 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-25 17:09:01,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:09:01,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-25 17:09:01,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:09:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:01,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1902671209, now seen corresponding path program 2 times [2022-11-25 17:09:01,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:01,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305073945] [2022-11-25 17:09:01,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:01,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:09:01,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:01,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305073945] [2022-11-25 17:09:01,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305073945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:01,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:01,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068416106] [2022-11-25 17:09:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:01,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:01,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:01,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:01,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 438 [2022-11-25 17:09:01,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2022-11-25 17:09:01,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:01,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 438 [2022-11-25 17:09:01,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:01,779 INFO L130 PetriNetUnfolder]: 401/883 cut-off events. [2022-11-25 17:09:01,780 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:09:01,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 883 events. 401/883 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4870 event pairs, 228 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 1697. Up to 770 conditions per place. [2022-11-25 17:09:01,785 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 66 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2022-11-25 17:09:01,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 335 flow [2022-11-25 17:09:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:01,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2022-11-25 17:09:01,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4802130898021309 [2022-11-25 17:09:01,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2022-11-25 17:09:01,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2022-11-25 17:09:01,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:01,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2022-11-25 17:09:01,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-11-25 17:09:01,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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) [2022-11-25 17:09:01,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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) [2022-11-25 17:09:01,794 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 165 flow. Second operand 3 states and 631 transitions. [2022-11-25 17:09:01,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 335 flow [2022-11-25 17:09:01,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 77 transitions, 321 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:01,797 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 155 flow [2022-11-25 17:09:01,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2022-11-25 17:09:01,798 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2022-11-25 17:09:01,799 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 155 flow [2022-11-25 17:09:01,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2022-11-25 17:09:01,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:01,800 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-25 17:09:01,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:09:01,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:09:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1189103574, now seen corresponding path program 1 times [2022-11-25 17:09:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:01,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910394112] [2022-11-25 17:09:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:09:01,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:01,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910394112] [2022-11-25 17:09:01,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910394112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:09:01,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635864413] [2022-11-25 17:09:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:01,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:09:01,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:09:01,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:09:01,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:09:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:02,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:09:02,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:09:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:09:02,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:09:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:09:02,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635864413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:09:02,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:09:02,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:09:02,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331153920] [2022-11-25 17:09:02,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:09:02,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:09:02,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:02,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:09:02,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:09:02,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 438 [2022-11-25 17:09:02,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 188.30769230769232) internal successors, (2448), 13 states have internal predecessors, (2448), 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) [2022-11-25 17:09:02,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:02,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 438 [2022-11-25 17:09:02,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:02,379 INFO L130 PetriNetUnfolder]: 401/881 cut-off events. [2022-11-25 17:09:02,379 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-11-25 17:09:02,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 881 events. 401/881 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4734 event pairs, 360 based on Foata normal form. 6/699 useless extension candidates. Maximal degree in co-relation 1753. Up to 780 conditions per place. [2022-11-25 17:09:02,384 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 44 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2022-11-25 17:09:02,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 301 flow [2022-11-25 17:09:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:09:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:09:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2305 transitions. [2022-11-25 17:09:02,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4385464231354642 [2022-11-25 17:09:02,391 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2305 transitions. [2022-11-25 17:09:02,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2305 transitions. [2022-11-25 17:09:02,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:02,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2305 transitions. [2022-11-25 17:09:02,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.08333333333334) internal successors, (2305), 12 states have internal predecessors, (2305), 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) [2022-11-25 17:09:02,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 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) [2022-11-25 17:09:02,407 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 438.0) internal successors, (5694), 13 states have internal predecessors, (5694), 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) [2022-11-25 17:09:02,407 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 155 flow. Second operand 12 states and 2305 transitions. [2022-11-25 17:09:02,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 301 flow [2022-11-25 17:09:02,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 64 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:09:02,411 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 235 flow [2022-11-25 17:09:02,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2022-11-25 17:09:02,412 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, 23 predicate places. [2022-11-25 17:09:02,412 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 235 flow [2022-11-25 17:09:02,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 188.30769230769232) internal successors, (2448), 13 states have internal predecessors, (2448), 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) [2022-11-25 17:09:02,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:02,413 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-25 17:09:02,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 17:09:02,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:09:02,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:09:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash -703885322, now seen corresponding path program 2 times [2022-11-25 17:09:02,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:02,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657830753] [2022-11-25 17:09:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:02,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:09:02,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:09:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:09:02,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:09:02,720 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:09:02,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-25 17:09:02,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-25 17:09:02,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-25 17:09:02,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-25 17:09:02,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-25 17:09:02,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-25 17:09:02,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-25 17:09:02,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-25 17:09:02,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-25 17:09:02,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-25 17:09:02,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-25 17:09:02,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-25 17:09:02,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-25 17:09:02,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-25 17:09:02,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-25 17:09:02,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-25 17:09:02,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-25 17:09:02,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-25 17:09:02,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-25 17:09:02,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:09:02,735 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-11-25 17:09:02,738 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:09:02,742 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:09:02,782 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:09:02,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 302 transitions, 622 flow [2022-11-25 17:09:02,858 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2022-11-25 17:09:02,859 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-25 17:09:02,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2066 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-25 17:09:02,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 302 transitions, 622 flow [2022-11-25 17:09:02,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 302 transitions, 622 flow [2022-11-25 17:09:02,869 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:09:02,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 262 places, 302 transitions, 622 flow [2022-11-25 17:09:02,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 262 places, 302 transitions, 622 flow [2022-11-25 17:09:02,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 302 transitions, 622 flow [2022-11-25 17:09:02,953 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2022-11-25 17:09:02,954 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-25 17:09:02,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2066 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-25 17:09:02,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 42196 [2022-11-25 17:09:08,694 INFO L134 LiptonReduction]: Checked pairs total: 77702 [2022-11-25 17:09:08,694 INFO L136 LiptonReduction]: Total number of compositions: 296 [2022-11-25 17:09:08,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:09:08,702 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;@5947dca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:09:08,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-25 17:09:08,704 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:09:08,704 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:09:08,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:08,704 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:09:08,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash 50119, now seen corresponding path program 1 times [2022-11-25 17:09:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:08,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16515053] [2022-11-25 17:09:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:08,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:08,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:08,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16515053] [2022-11-25 17:09:08,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16515053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:08,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:08,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:09:08,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183585287] [2022-11-25 17:09:08,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:08,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:08,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:08,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:08,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 598 [2022-11-25 17:09:08,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 114 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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) [2022-11-25 17:09:08,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:08,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 598 [2022-11-25 17:09:08,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:11,619 INFO L130 PetriNetUnfolder]: 17588/27193 cut-off events. [2022-11-25 17:09:11,619 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-25 17:09:11,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53185 conditions, 27193 events. 17588/27193 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 199697 event pairs, 16582 based on Foata normal form. 4420/23304 useless extension candidates. Maximal degree in co-relation 24962. Up to 25876 conditions per place. [2022-11-25 17:09:11,770 INFO L137 encePairwiseOnDemand]: 563/598 looper letters, 69 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2022-11-25 17:09:11,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 328 flow [2022-11-25 17:09:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2022-11-25 17:09:11,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.479933110367893 [2022-11-25 17:09:11,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2022-11-25 17:09:11,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2022-11-25 17:09:11,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:11,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2022-11-25 17:09:11,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 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) [2022-11-25 17:09:11,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 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) [2022-11-25 17:09:11,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 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) [2022-11-25 17:09:11,785 INFO L175 Difference]: Start difference. First operand has 83 places, 114 transitions, 246 flow. Second operand 3 states and 861 transitions. [2022-11-25 17:09:11,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 328 flow [2022-11-25 17:09:11,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:09:11,791 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 198 flow [2022-11-25 17:09:11,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2022-11-25 17:09:11,792 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2022-11-25 17:09:11,793 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 198 flow [2022-11-25 17:09:11,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 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) [2022-11-25 17:09:11,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:11,794 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:09:11,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:09:11,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1556595, now seen corresponding path program 1 times [2022-11-25 17:09:11,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:11,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819208182] [2022-11-25 17:09:11,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:11,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:11,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819208182] [2022-11-25 17:09:11,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819208182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:09:11,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489734563] [2022-11-25 17:09:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:11,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:09:11,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:09:11,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:09:11,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:09:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:11,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:09:11,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:09:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:11,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:09:11,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489734563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:11,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:09:11,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 17:09:11,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789424511] [2022-11-25 17:09:11,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:11,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:09:11,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:11,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:09:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:09:12,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 598 [2022-11-25 17:09:12,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 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) [2022-11-25 17:09:12,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:12,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 598 [2022-11-25 17:09:12,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:14,330 INFO L130 PetriNetUnfolder]: 17588/27192 cut-off events. [2022-11-25 17:09:14,330 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-25 17:09:14,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53190 conditions, 27192 events. 17588/27192 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 199707 event pairs, 16582 based on Foata normal form. 0/18884 useless extension candidates. Maximal degree in co-relation 53177. Up to 25874 conditions per place. [2022-11-25 17:09:14,465 INFO L137 encePairwiseOnDemand]: 595/598 looper letters, 68 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2022-11-25 17:09:14,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 334 flow [2022-11-25 17:09:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:09:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:09:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1079 transitions. [2022-11-25 17:09:14,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45108695652173914 [2022-11-25 17:09:14,470 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1079 transitions. [2022-11-25 17:09:14,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1079 transitions. [2022-11-25 17:09:14,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:14,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1079 transitions. [2022-11-25 17:09:14,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.75) internal successors, (1079), 4 states have internal predecessors, (1079), 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) [2022-11-25 17:09:14,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 598.0) internal successors, (2990), 5 states have internal predecessors, (2990), 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) [2022-11-25 17:09:14,480 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 598.0) internal successors, (2990), 5 states have internal predecessors, (2990), 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) [2022-11-25 17:09:14,481 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 198 flow. Second operand 4 states and 1079 transitions. [2022-11-25 17:09:14,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 334 flow [2022-11-25 17:09:14,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 330 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:14,484 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 194 flow [2022-11-25 17:09:14,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2022-11-25 17:09:14,486 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2022-11-25 17:09:14,486 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 194 flow [2022-11-25 17:09:14,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 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) [2022-11-25 17:09:14,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:14,487 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:14,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:09:14,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:09:14,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1145155353, now seen corresponding path program 1 times [2022-11-25 17:09:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:14,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784807339] [2022-11-25 17:09:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:14,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:14,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:14,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784807339] [2022-11-25 17:09:14,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784807339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:09:14,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128277605] [2022-11-25 17:09:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:14,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:09:14,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:09:14,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:09:14,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:09:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:14,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:09:14,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:09:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:14,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:09:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:14,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128277605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:09:14,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:09:14,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:09:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820838326] [2022-11-25 17:09:14,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:09:14,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:09:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:14,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:09:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:09:14,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 598 [2022-11-25 17:09:14,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 252.57142857142858) internal successors, (1768), 7 states have internal predecessors, (1768), 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) [2022-11-25 17:09:14,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:14,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 598 [2022-11-25 17:09:14,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:17,282 INFO L130 PetriNetUnfolder]: 17588/27195 cut-off events. [2022-11-25 17:09:17,282 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-25 17:09:17,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53199 conditions, 27195 events. 17588/27195 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 199790 event pairs, 16582 based on Foata normal form. 0/18887 useless extension candidates. Maximal degree in co-relation 53186. Up to 25875 conditions per place. [2022-11-25 17:09:17,378 INFO L137 encePairwiseOnDemand]: 595/598 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2022-11-25 17:09:17,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 352 flow [2022-11-25 17:09:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:09:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:09:17,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1582 transitions. [2022-11-25 17:09:17,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44091415830546266 [2022-11-25 17:09:17,384 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1582 transitions. [2022-11-25 17:09:17,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1582 transitions. [2022-11-25 17:09:17,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:17,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1582 transitions. [2022-11-25 17:09:17,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.6666666666667) internal successors, (1582), 6 states have internal predecessors, (1582), 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) [2022-11-25 17:09:17,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 598.0) internal successors, (4186), 7 states have internal predecessors, (4186), 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) [2022-11-25 17:09:17,396 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 598.0) internal successors, (4186), 7 states have internal predecessors, (4186), 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) [2022-11-25 17:09:17,396 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 194 flow. Second operand 6 states and 1582 transitions. [2022-11-25 17:09:17,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 352 flow [2022-11-25 17:09:17,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:09:17,399 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 227 flow [2022-11-25 17:09:17,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2022-11-25 17:09:17,400 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2022-11-25 17:09:17,400 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 227 flow [2022-11-25 17:09:17,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 252.57142857142858) internal successors, (1768), 7 states have internal predecessors, (1768), 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) [2022-11-25 17:09:17,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:17,401 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:17,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 17:09:17,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 17:09:17,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:17,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash 392156475, now seen corresponding path program 2 times [2022-11-25 17:09:17,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:17,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482035774] [2022-11-25 17:09:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:17,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:09:17,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:17,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482035774] [2022-11-25 17:09:17,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482035774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:17,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:17,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779471300] [2022-11-25 17:09:17,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:17,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:17,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:17,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:17,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:17,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 598 [2022-11-25 17:09:17,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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) [2022-11-25 17:09:17,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:17,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 598 [2022-11-25 17:09:17,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:19,795 INFO L130 PetriNetUnfolder]: 17708/27278 cut-off events. [2022-11-25 17:09:19,795 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-25 17:09:19,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53213 conditions, 27278 events. 17708/27278 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 197958 event pairs, 13513 based on Foata normal form. 0/19042 useless extension candidates. Maximal degree in co-relation 53196. Up to 25772 conditions per place. [2022-11-25 17:09:19,907 INFO L137 encePairwiseOnDemand]: 593/598 looper letters, 90 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2022-11-25 17:09:19,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 105 transitions, 449 flow [2022-11-25 17:09:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2022-11-25 17:09:19,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4721293199554069 [2022-11-25 17:09:19,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2022-11-25 17:09:19,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2022-11-25 17:09:19,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:19,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2022-11-25 17:09:19,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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) [2022-11-25 17:09:19,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 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) [2022-11-25 17:09:19,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 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) [2022-11-25 17:09:19,920 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 227 flow. Second operand 3 states and 847 transitions. [2022-11-25 17:09:19,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 105 transitions, 449 flow [2022-11-25 17:09:19,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 105 transitions, 435 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:19,924 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 229 flow [2022-11-25 17:09:19,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2022-11-25 17:09:19,925 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2022-11-25 17:09:19,925 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 229 flow [2022-11-25 17:09:19,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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) [2022-11-25 17:09:19,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:19,926 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:19,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:09:19,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:19,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:19,927 INFO L85 PathProgramCache]: Analyzing trace with hash 874579508, now seen corresponding path program 1 times [2022-11-25 17:09:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:19,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26542853] [2022-11-25 17:09:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:19,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:20,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:20,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26542853] [2022-11-25 17:09:20,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26542853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:09:20,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415384184] [2022-11-25 17:09:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:20,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:09:20,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:09:20,050 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:09:20,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:09:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:20,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:09:20,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:09:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:20,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:09:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:20,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415384184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:09:20,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:09:20,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:09:20,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786403636] [2022-11-25 17:09:20,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:09:20,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:09:20,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:20,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:09:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:09:20,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 598 [2022-11-25 17:09:20,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 252.46153846153845) internal successors, (3282), 13 states have internal predecessors, (3282), 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) [2022-11-25 17:09:20,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:20,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 598 [2022-11-25 17:09:20,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:22,536 INFO L130 PetriNetUnfolder]: 17670/27242 cut-off events. [2022-11-25 17:09:22,536 INFO L131 PetriNetUnfolder]: For 945/945 co-relation queries the response was YES. [2022-11-25 17:09:22,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54681 conditions, 27242 events. 17670/27242 cut-off events. For 945/945 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 197820 event pairs, 16548 based on Foata normal form. 6/19343 useless extension candidates. Maximal degree in co-relation 54663. Up to 25788 conditions per place. [2022-11-25 17:09:22,635 INFO L137 encePairwiseOnDemand]: 595/598 looper letters, 69 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2022-11-25 17:09:22,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 425 flow [2022-11-25 17:09:22,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:09:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:09:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3097 transitions. [2022-11-25 17:09:22,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43157748049052397 [2022-11-25 17:09:22,648 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3097 transitions. [2022-11-25 17:09:22,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3097 transitions. [2022-11-25 17:09:22,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:22,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3097 transitions. [2022-11-25 17:09:22,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 258.0833333333333) internal successors, (3097), 12 states have internal predecessors, (3097), 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) [2022-11-25 17:09:22,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 598.0) internal successors, (7774), 13 states have internal predecessors, (7774), 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) [2022-11-25 17:09:22,671 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 598.0) internal successors, (7774), 13 states have internal predecessors, (7774), 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) [2022-11-25 17:09:22,671 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 229 flow. Second operand 12 states and 3097 transitions. [2022-11-25 17:09:22,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 425 flow [2022-11-25 17:09:22,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:22,675 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 311 flow [2022-11-25 17:09:22,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=311, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2022-11-25 17:09:22,676 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2022-11-25 17:09:22,676 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 311 flow [2022-11-25 17:09:22,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 252.46153846153845) internal successors, (3282), 13 states have internal predecessors, (3282), 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) [2022-11-25 17:09:22,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:22,677 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:22,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 17:09:22,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:09:22,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:22,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash -720955980, now seen corresponding path program 2 times [2022-11-25 17:09:22,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:22,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798458168] [2022-11-25 17:09:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:22,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:09:23,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:23,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798458168] [2022-11-25 17:09:23,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798458168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:23,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:23,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:09:23,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235525415] [2022-11-25 17:09:23,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:23,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:09:23,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:09:23,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:09:23,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 598 [2022-11-25 17:09:23,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 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) [2022-11-25 17:09:23,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:23,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 598 [2022-11-25 17:09:23,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:26,525 INFO L130 PetriNetUnfolder]: 20915/33031 cut-off events. [2022-11-25 17:09:26,525 INFO L131 PetriNetUnfolder]: For 1187/1187 co-relation queries the response was YES. [2022-11-25 17:09:26,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66727 conditions, 33031 events. 20915/33031 cut-off events. For 1187/1187 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 256219 event pairs, 6905 based on Foata normal form. 0/24125 useless extension candidates. Maximal degree in co-relation 66701. Up to 22514 conditions per place. [2022-11-25 17:09:26,665 INFO L137 encePairwiseOnDemand]: 586/598 looper letters, 189 selfloop transitions, 17 changer transitions 0/219 dead transitions. [2022-11-25 17:09:26,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 219 transitions, 1017 flow [2022-11-25 17:09:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:09:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:09:26,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1653 transitions. [2022-11-25 17:09:26,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46070234113712377 [2022-11-25 17:09:26,671 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1653 transitions. [2022-11-25 17:09:26,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1653 transitions. [2022-11-25 17:09:26,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:26,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1653 transitions. [2022-11-25 17:09:26,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2022-11-25 17:09:26,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 598.0) internal successors, (4186), 7 states have internal predecessors, (4186), 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) [2022-11-25 17:09:26,874 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 598.0) internal successors, (4186), 7 states have internal predecessors, (4186), 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) [2022-11-25 17:09:26,874 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 311 flow. Second operand 6 states and 1653 transitions. [2022-11-25 17:09:26,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 219 transitions, 1017 flow [2022-11-25 17:09:26,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 219 transitions, 969 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-25 17:09:26,881 INFO L231 Difference]: Finished difference. Result has 113 places, 108 transitions, 372 flow [2022-11-25 17:09:26,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2022-11-25 17:09:26,883 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 30 predicate places. [2022-11-25 17:09:26,883 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 372 flow [2022-11-25 17:09:26,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 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) [2022-11-25 17:09:26,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:26,884 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:26,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:09:26,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1912222383, now seen corresponding path program 1 times [2022-11-25 17:09:26,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:26,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398207842] [2022-11-25 17:09:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:26,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 17:09:26,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:26,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398207842] [2022-11-25 17:09:26,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398207842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:26,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:26,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059247943] [2022-11-25 17:09:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:26,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:26,954 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 598 [2022-11-25 17:09:26,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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) [2022-11-25 17:09:26,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:26,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 598 [2022-11-25 17:09:26,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:29,929 INFO L130 PetriNetUnfolder]: 19952/32171 cut-off events. [2022-11-25 17:09:29,929 INFO L131 PetriNetUnfolder]: For 4496/4496 co-relation queries the response was YES. [2022-11-25 17:09:30,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71930 conditions, 32171 events. 19952/32171 cut-off events. For 4496/4496 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 255871 event pairs, 3510 based on Foata normal form. 0/25368 useless extension candidates. Maximal degree in co-relation 71902. Up to 26610 conditions per place. [2022-11-25 17:09:30,068 INFO L137 encePairwiseOnDemand]: 594/598 looper letters, 131 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2022-11-25 17:09:30,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 149 transitions, 756 flow [2022-11-25 17:09:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 859 transitions. [2022-11-25 17:09:30,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47881828316610925 [2022-11-25 17:09:30,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 859 transitions. [2022-11-25 17:09:30,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 859 transitions. [2022-11-25 17:09:30,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:30,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 859 transitions. [2022-11-25 17:09:30,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 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) [2022-11-25 17:09:30,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 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) [2022-11-25 17:09:30,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 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) [2022-11-25 17:09:30,077 INFO L175 Difference]: Start difference. First operand has 113 places, 108 transitions, 372 flow. Second operand 3 states and 859 transitions. [2022-11-25 17:09:30,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 149 transitions, 756 flow [2022-11-25 17:09:30,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 149 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:09:30,095 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 389 flow [2022-11-25 17:09:30,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-11-25 17:09:30,096 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-11-25 17:09:30,096 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 389 flow [2022-11-25 17:09:30,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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) [2022-11-25 17:09:30,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:30,097 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:30,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:09:30,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1912222442, now seen corresponding path program 1 times [2022-11-25 17:09:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:30,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744487004] [2022-11-25 17:09:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:30,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:09:30,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:30,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744487004] [2022-11-25 17:09:30,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744487004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:30,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:30,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915238001] [2022-11-25 17:09:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:30,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:30,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:30,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 598 [2022-11-25 17:09:30,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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) [2022-11-25 17:09:30,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:30,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 598 [2022-11-25 17:09:30,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:33,033 INFO L130 PetriNetUnfolder]: 19095/30105 cut-off events. [2022-11-25 17:09:33,033 INFO L131 PetriNetUnfolder]: For 10276/10278 co-relation queries the response was YES. [2022-11-25 17:09:33,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69112 conditions, 30105 events. 19095/30105 cut-off events. For 10276/10278 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 227347 event pairs, 16942 based on Foata normal form. 464/24356 useless extension candidates. Maximal degree in co-relation 69083. Up to 28814 conditions per place. [2022-11-25 17:09:33,179 INFO L137 encePairwiseOnDemand]: 596/598 looper letters, 93 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2022-11-25 17:09:33,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 107 transitions, 573 flow [2022-11-25 17:09:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2022-11-25 17:09:33,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4593088071348941 [2022-11-25 17:09:33,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2022-11-25 17:09:33,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2022-11-25 17:09:33,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:33,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2022-11-25 17:09:33,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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) [2022-11-25 17:09:33,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 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) [2022-11-25 17:09:33,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 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) [2022-11-25 17:09:33,189 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 389 flow. Second operand 3 states and 824 transitions. [2022-11-25 17:09:33,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 107 transitions, 573 flow [2022-11-25 17:09:33,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 107 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:33,207 INFO L231 Difference]: Finished difference. Result has 115 places, 107 transitions, 382 flow [2022-11-25 17:09:33,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=115, PETRI_TRANSITIONS=107} [2022-11-25 17:09:33,208 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-11-25 17:09:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 107 transitions, 382 flow [2022-11-25 17:09:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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) [2022-11-25 17:09:33,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:33,209 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:33,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:09:33,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1071219190, now seen corresponding path program 1 times [2022-11-25 17:09:33,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:33,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451324603] [2022-11-25 17:09:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:33,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:09:33,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:33,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451324603] [2022-11-25 17:09:33,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451324603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:09:33,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198426560] [2022-11-25 17:09:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:33,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:09:33,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:09:33,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:09:33,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:09:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:33,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:09:33,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:09:33,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-25 17:09:33,957 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 17:09:33,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-25 17:09:33,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-25 17:09:34,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-25 17:09:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:09:34,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:09:34,157 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_314 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_314) |c_~#a~0.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 2147483647)) is different from false [2022-11-25 17:09:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2022-11-25 17:09:34,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198426560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:09:34,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:09:34,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2022-11-25 17:09:34,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296358830] [2022-11-25 17:09:34,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:09:34,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:09:34,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:34,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:09:34,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=4, NotChecked=20, Total=156 [2022-11-25 17:09:34,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 598 [2022-11-25 17:09:34,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 107 transitions, 382 flow. Second operand has 13 states, 13 states have (on average 216.15384615384616) internal successors, (2810), 13 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) [2022-11-25 17:09:34,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:34,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 598 [2022-11-25 17:09:34,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:37,913 INFO L130 PetriNetUnfolder]: 18457/29209 cut-off events. [2022-11-25 17:09:37,913 INFO L131 PetriNetUnfolder]: For 8262/8262 co-relation queries the response was YES. [2022-11-25 17:09:37,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65828 conditions, 29209 events. 18457/29209 cut-off events. For 8262/8262 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 219823 event pairs, 7745 based on Foata normal form. 163/23516 useless extension candidates. Maximal degree in co-relation 65798. Up to 20824 conditions per place. [2022-11-25 17:09:38,051 INFO L137 encePairwiseOnDemand]: 587/598 looper letters, 169 selfloop transitions, 23 changer transitions 0/205 dead transitions. [2022-11-25 17:09:38,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 205 transitions, 1030 flow [2022-11-25 17:09:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:09:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:09:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1674 transitions. [2022-11-25 17:09:38,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39990444338270426 [2022-11-25 17:09:38,056 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1674 transitions. [2022-11-25 17:09:38,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1674 transitions. [2022-11-25 17:09:38,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:38,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1674 transitions. [2022-11-25 17:09:38,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 239.14285714285714) internal successors, (1674), 7 states have internal predecessors, (1674), 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) [2022-11-25 17:09:38,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 598.0) internal successors, (4784), 8 states have internal predecessors, (4784), 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) [2022-11-25 17:09:38,067 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 598.0) internal successors, (4784), 8 states have internal predecessors, (4784), 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) [2022-11-25 17:09:38,067 INFO L175 Difference]: Start difference. First operand has 115 places, 107 transitions, 382 flow. Second operand 7 states and 1674 transitions. [2022-11-25 17:09:38,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 205 transitions, 1030 flow [2022-11-25 17:09:38,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 205 transitions, 1029 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:38,103 INFO L231 Difference]: Finished difference. Result has 123 places, 114 transitions, 496 flow [2022-11-25 17:09:38,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=496, PETRI_PLACES=123, PETRI_TRANSITIONS=114} [2022-11-25 17:09:38,104 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 40 predicate places. [2022-11-25 17:09:38,104 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 114 transitions, 496 flow [2022-11-25 17:09:38,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 216.15384615384616) internal successors, (2810), 13 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) [2022-11-25 17:09:38,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:38,105 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:09:38,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:09:38,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b2dbab1-43f5-48e4-85fc-dc253be6af00/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:09:38,311 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 17:09:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:38,311 INFO L85 PathProgramCache]: Analyzing trace with hash 600388415, now seen corresponding path program 1 times [2022-11-25 17:09:38,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:38,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160646085] [2022-11-25 17:09:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:38,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:09:38,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:09:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:09:38,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:09:38,392 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:09:38,393 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-25 17:09:38,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-25 17:09:38,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-25 17:09:38,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-25 17:09:38,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-25 17:09:38,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-25 17:09:38,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-25 17:09:38,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-25 17:09:38,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-25 17:09:38,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-25 17:09:38,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-25 17:09:38,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-25 17:09:38,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-25 17:09:38,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-25 17:09:38,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-11-25 17:09:38,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-11-25 17:09:38,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-11-25 17:09:38,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-25 17:09:38,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-25 17:09:38,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-25 17:09:38,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-25 17:09:38,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-25 17:09:38,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-25 17:09:38,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:09:38,398 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:38,399 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:09:38,399 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:09:38,443 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:09:38,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2022-11-25 17:09:38,566 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2022-11-25 17:09:38,567 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-25 17:09:38,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3394 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2022-11-25 17:09:38,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 381 transitions, 792 flow [2022-11-25 17:09:38,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 381 transitions, 792 flow [2022-11-25 17:09:38,587 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:09:38,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 381 transitions, 792 flow [2022-11-25 17:09:38,587 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 381 transitions, 792 flow [2022-11-25 17:09:38,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2022-11-25 17:09:38,703 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2022-11-25 17:09:38,703 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-25 17:09:38,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3394 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2022-11-25 17:09:38,748 INFO L119 LiptonReduction]: Number of co-enabled transitions 81774 [2022-11-25 17:09:45,757 INFO L134 LiptonReduction]: Checked pairs total: 137308 [2022-11-25 17:09:45,758 INFO L136 LiptonReduction]: Total number of compositions: 361 [2022-11-25 17:09:45,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:09:45,760 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;@5947dca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:09:45,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-25 17:09:45,761 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:09:45,761 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:09:45,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:45,761 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:09:45,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-25 17:09:45,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash 76409, now seen corresponding path program 1 times [2022-11-25 17:09:45,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:45,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286864366] [2022-11-25 17:09:45,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:45,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:45,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:45,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286864366] [2022-11-25 17:09:45,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286864366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:45,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:45,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:09:45,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483029594] [2022-11-25 17:09:45,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:45,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:45,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:45,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:45,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 742 [2022-11-25 17:09:45,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 149 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 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) [2022-11-25 17:09:45,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:45,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 742 [2022-11-25 17:09:45,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand