./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8 --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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- 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-2329fc7 [2022-12-13 19:53:25,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:53:25,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:53:25,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:53:25,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:53:25,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:53:25,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:53:25,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:53:25,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:53:25,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:53:25,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:53:25,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:53:25,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:53:25,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:53:25,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:53:25,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:53:25,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:53:25,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:53:25,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:53:25,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:53:25,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:53:25,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:53:25,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:53:25,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:53:25,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:53:25,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:53:25,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:53:25,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:53:25,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:53:25,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:53:25,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:53:25,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:53:25,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:53:25,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:53:25,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:53:25,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:53:25,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:53:25,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:53:25,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:53:25,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:53:25,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:53:25,920 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:53:25,932 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:53:25,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:53:25,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:53:25,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:53:25,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:53:25,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:53:25,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:53:25,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:53:25,934 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:53:25,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:53:25,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:53:25,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:53:25,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:53:25,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:53:25,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:53:25,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:53:25,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:53:25,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:53:25,935 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:53:25,935 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:53:25,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:53:25,935 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:53:25,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:53:25,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:53:25,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:53:25,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:53:25,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:53:25,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:53:25,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:53:25,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:53:25,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:53:25,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:53:25,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:53:25,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:53:25,936 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:53:25,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:53:25,936 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:53:25,936 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_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2022-12-13 19:53:26,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:53:26,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:53:26,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:53:26,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:53:26,145 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:53:26,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-12-13 19:53:28,669 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:53:28,839 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:53:28,840 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-12-13 19:53:28,848 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/data/ecefa0862/5da12bb8eeea40f58d51c8ef8028d0c6/FLAG3cd88fce0 [2022-12-13 19:53:28,862 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/data/ecefa0862/5da12bb8eeea40f58d51c8ef8028d0c6 [2022-12-13 19:53:28,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:53:28,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:53:28,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:53:28,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:53:28,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:53:28,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:53:28" (1/1) ... [2022-12-13 19:53:28,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d679ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:28, skipping insertion in model container [2022-12-13 19:53:28,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:53:28" (1/1) ... [2022-12-13 19:53:28,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:53:28,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:53:29,102 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_21869dee-037c-4002-a138-aebd504b65f9/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-12-13 19:53:29,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:53:29,132 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:53:29,153 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_21869dee-037c-4002-a138-aebd504b65f9/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-12-13 19:53:29,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:53:29,180 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:53:29,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29 WrapperNode [2022-12-13 19:53:29,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:53:29,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:53:29,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:53:29,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:53:29,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,209 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-12-13 19:53:29,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:53:29,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:53:29,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:53:29,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:53:29,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,227 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:53:29,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:53:29,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:53:29,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:53:29,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (1/1) ... [2022-12-13 19:53:29,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:53:29,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:53:29,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:53:29,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:53:29,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:53:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:53:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:53:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:53:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:53:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 19:53:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 19:53:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:53:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:53:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:53:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:53:29,293 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:53:29,406 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:53:29,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:53:29,604 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:53:29,611 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:53:29,611 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 19:53:29,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:53:29 BoogieIcfgContainer [2022-12-13 19:53:29,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:53:29,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:53:29,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:53:29,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:53:29,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:53:28" (1/3) ... [2022-12-13 19:53:29,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515654ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:53:29, skipping insertion in model container [2022-12-13 19:53:29,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:53:29" (2/3) ... [2022-12-13 19:53:29,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515654ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:53:29, skipping insertion in model container [2022-12-13 19:53:29,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:53:29" (3/3) ... [2022-12-13 19:53:29,622 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2022-12-13 19:53:29,631 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:53:29,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:53:29,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 19:53:29,642 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:53:29,697 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 19:53:29,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow [2022-12-13 19:53:29,798 INFO L130 PetriNetUnfolder]: 17/175 cut-off events. [2022-12-13 19:53:29,798 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:53:29,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 17/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 420 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-12-13 19:53:29,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 138 transitions, 284 flow [2022-12-13 19:53:29,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 135 transitions, 278 flow [2022-12-13 19:53:29,813 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:53:29,824 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 135 transitions, 278 flow [2022-12-13 19:53:29,826 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 135 transitions, 278 flow [2022-12-13 19:53:29,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 135 transitions, 278 flow [2022-12-13 19:53:29,864 INFO L130 PetriNetUnfolder]: 16/172 cut-off events. [2022-12-13 19:53:29,865 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:53:29,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 172 events. 16/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 417 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-12-13 19:53:29,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 3854 [2022-12-13 19:53:32,447 INFO L134 LiptonReduction]: Checked pairs total: 7097 [2022-12-13 19:53:32,448 INFO L136 LiptonReduction]: Total number of compositions: 120 [2022-12-13 19:53:32,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:53:32,462 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;@6e787489, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:53:32,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 19:53:32,465 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-12-13 19:53:32,465 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:53:32,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:32,465 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:53:32,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 19:53:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash 16005869, now seen corresponding path program 1 times [2022-12-13 19:53:32,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:32,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283003366] [2022-12-13 19:53:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:32,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:32,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:32,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283003366] [2022-12-13 19:53:32,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283003366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:32,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:32,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:53:32,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707404014] [2022-12-13 19:53:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:32,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:53:32,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:32,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:53:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:53:32,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 258 [2022-12-13 19:53:32,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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) [2022-12-13 19:53:32,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:32,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 258 [2022-12-13 19:53:32,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:32,776 INFO L130 PetriNetUnfolder]: 98/232 cut-off events. [2022-12-13 19:53:32,776 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:53:32,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 232 events. 98/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 857 event pairs, 78 based on Foata normal form. 8/191 useless extension candidates. Maximal degree in co-relation 441. Up to 207 conditions per place. [2022-12-13 19:53:32,779 INFO L137 encePairwiseOnDemand]: 243/258 looper letters, 39 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 19:53:32,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 178 flow [2022-12-13 19:53:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:53:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:53:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2022-12-13 19:53:32,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5426356589147286 [2022-12-13 19:53:32,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2022-12-13 19:53:32,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2022-12-13 19:53:32,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:32,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2022-12-13 19:53:32,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:53:32,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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) [2022-12-13 19:53:32,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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) [2022-12-13 19:53:32,801 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 90 flow. Second operand 3 states and 420 transitions. [2022-12-13 19:53:32,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 178 flow [2022-12-13 19:53:32,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:53:32,805 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 74 flow [2022-12-13 19:53:32,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2022-12-13 19:53:32,809 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2022-12-13 19:53:32,809 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 74 flow [2022-12-13 19:53:32,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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) [2022-12-13 19:53:32,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:32,809 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 19:53:32,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:53:32,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 19:53:32,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:32,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1798213454, now seen corresponding path program 1 times [2022-12-13 19:53:32,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:32,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122080046] [2022-12-13 19:53:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:32,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:53:32,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:53:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:53:32,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:53:32,855 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:53:32,856 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-13 19:53:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-13 19:53:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-13 19:53:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-13 19:53:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-13 19:53:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-13 19:53:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-13 19:53:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-13 19:53:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-13 19:53:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-13 19:53:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-13 19:53:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-13 19:53:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-13 19:53:32,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:53:32,859 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 19:53:32,861 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:53:32,861 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 19:53:32,879 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:53:32,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 181 transitions, 380 flow [2022-12-13 19:53:32,906 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2022-12-13 19:53:32,906 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:53:32,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 31/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 906 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-12-13 19:53:32,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 181 transitions, 380 flow [2022-12-13 19:53:32,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 181 transitions, 380 flow [2022-12-13 19:53:32,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:53:32,909 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 181 transitions, 380 flow [2022-12-13 19:53:32,910 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 181 transitions, 380 flow [2022-12-13 19:53:32,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 181 transitions, 380 flow [2022-12-13 19:53:32,936 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2022-12-13 19:53:32,936 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:53:32,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 31/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 906 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-12-13 19:53:32,942 INFO L119 LiptonReduction]: Number of co-enabled transitions 12628 [2022-12-13 19:53:35,745 INFO L134 LiptonReduction]: Checked pairs total: 28170 [2022-12-13 19:53:35,746 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-12-13 19:53:35,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:53:35,748 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;@6e787489, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:53:35,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 19:53:35,749 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2022-12-13 19:53:35,750 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:53:35,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:35,750 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:53:35,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 19:53:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:35,750 INFO L85 PathProgramCache]: Analyzing trace with hash 854959489, now seen corresponding path program 1 times [2022-12-13 19:53:35,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:35,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474280179] [2022-12-13 19:53:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:35,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:35,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:35,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474280179] [2022-12-13 19:53:35,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474280179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:35,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:35,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:53:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035967549] [2022-12-13 19:53:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:53:35,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:53:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:53:35,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 333 [2022-12-13 19:53:35,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2022-12-13 19:53:35,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:35,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 333 [2022-12-13 19:53:35,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:36,338 INFO L130 PetriNetUnfolder]: 4435/7387 cut-off events. [2022-12-13 19:53:36,338 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2022-12-13 19:53:36,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14554 conditions, 7387 events. 4435/7387 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 48622 event pairs, 2080 based on Foata normal form. 710/5777 useless extension candidates. Maximal degree in co-relation 1677. Up to 7046 conditions per place. [2022-12-13 19:53:36,365 INFO L137 encePairwiseOnDemand]: 313/333 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2022-12-13 19:53:36,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2022-12-13 19:53:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:53:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:53:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2022-12-13 19:53:36,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5495495495495496 [2022-12-13 19:53:36,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2022-12-13 19:53:36,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2022-12-13 19:53:36,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:36,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2022-12-13 19:53:36,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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) [2022-12-13 19:53:36,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-12-13 19:53:36,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-12-13 19:53:36,371 INFO L175 Difference]: Start difference. First operand has 55 places, 67 transitions, 152 flow. Second operand 3 states and 549 transitions. [2022-12-13 19:53:36,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2022-12-13 19:53:36,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:53:36,373 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2022-12-13 19:53:36,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-12-13 19:53:36,374 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-12-13 19:53:36,374 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2022-12-13 19:53:36,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2022-12-13 19:53:36,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:36,374 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:53:36,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:53:36,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 19:53:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1285057457, now seen corresponding path program 1 times [2022-12-13 19:53:36,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:36,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137722561] [2022-12-13 19:53:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:36,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:36,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:36,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137722561] [2022-12-13 19:53:36,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137722561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:36,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:36,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:53:36,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719427934] [2022-12-13 19:53:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:36,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:53:36,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:53:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:53:36,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 333 [2022-12-13 19:53:36,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 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) [2022-12-13 19:53:36,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:36,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 333 [2022-12-13 19:53:36,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:37,282 INFO L130 PetriNetUnfolder]: 4846/8051 cut-off events. [2022-12-13 19:53:37,282 INFO L131 PetriNetUnfolder]: For 540/540 co-relation queries the response was YES. [2022-12-13 19:53:37,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16732 conditions, 8051 events. 4846/8051 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 53297 event pairs, 1484 based on Foata normal form. 0/5834 useless extension candidates. Maximal degree in co-relation 16644. Up to 5972 conditions per place. [2022-12-13 19:53:37,321 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 100 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2022-12-13 19:53:37,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 121 transitions, 534 flow [2022-12-13 19:53:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:53:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:53:37,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1009 transitions. [2022-12-13 19:53:37,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.505005005005005 [2022-12-13 19:53:37,324 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1009 transitions. [2022-12-13 19:53:37,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1009 transitions. [2022-12-13 19:53:37,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:37,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1009 transitions. [2022-12-13 19:53:37,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.16666666666666) internal successors, (1009), 6 states have internal predecessors, (1009), 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) [2022-12-13 19:53:37,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 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) [2022-12-13 19:53:37,333 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 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) [2022-12-13 19:53:37,333 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 6 states and 1009 transitions. [2022-12-13 19:53:37,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 121 transitions, 534 flow [2022-12-13 19:53:37,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 121 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:53:37,336 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 217 flow [2022-12-13 19:53:37,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2022-12-13 19:53:37,337 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2022-12-13 19:53:37,337 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 217 flow [2022-12-13 19:53:37,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 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) [2022-12-13 19:53:37,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:37,338 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:53:37,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:53:37,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 19:53:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:37,339 INFO L85 PathProgramCache]: Analyzing trace with hash -804439198, now seen corresponding path program 1 times [2022-12-13 19:53:37,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:37,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384410102] [2022-12-13 19:53:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:37,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384410102] [2022-12-13 19:53:37,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384410102] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:53:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584526349] [2022-12-13 19:53:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:37,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:53:37,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:53:37,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:53:37,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:53:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:37,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:53:37,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:53:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:37,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:53:37,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584526349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:37,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:53:37,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 19:53:37,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907735788] [2022-12-13 19:53:37,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:37,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:53:37,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:53:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:53:37,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 333 [2022-12-13 19:53:37,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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) [2022-12-13 19:53:37,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:37,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 333 [2022-12-13 19:53:37,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:38,120 INFO L130 PetriNetUnfolder]: 4446/7375 cut-off events. [2022-12-13 19:53:38,120 INFO L131 PetriNetUnfolder]: For 1863/1863 co-relation queries the response was YES. [2022-12-13 19:53:38,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17104 conditions, 7375 events. 4446/7375 cut-off events. For 1863/1863 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 47819 event pairs, 2494 based on Foata normal form. 0/5881 useless extension candidates. Maximal degree in co-relation 14249. Up to 7063 conditions per place. [2022-12-13 19:53:38,146 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 68 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2022-12-13 19:53:38,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 385 flow [2022-12-13 19:53:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:53:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:53:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 678 transitions. [2022-12-13 19:53:38,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.509009009009009 [2022-12-13 19:53:38,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 678 transitions. [2022-12-13 19:53:38,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 678 transitions. [2022-12-13 19:53:38,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:38,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 678 transitions. [2022-12-13 19:53:38,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 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) [2022-12-13 19:53:38,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 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) [2022-12-13 19:53:38,151 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 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) [2022-12-13 19:53:38,151 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 217 flow. Second operand 4 states and 678 transitions. [2022-12-13 19:53:38,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 385 flow [2022-12-13 19:53:38,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 77 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:53:38,154 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 217 flow [2022-12-13 19:53:38,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2022-12-13 19:53:38,155 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2022-12-13 19:53:38,155 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 217 flow [2022-12-13 19:53:38,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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) [2022-12-13 19:53:38,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:38,155 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:53:38,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:53:38,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:53:38,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 19:53:38,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash -804439197, now seen corresponding path program 1 times [2022-12-13 19:53:38,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:38,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612310973] [2022-12-13 19:53:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:38,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:53:38,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:38,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612310973] [2022-12-13 19:53:38,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612310973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:38,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:38,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:53:38,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267994046] [2022-12-13 19:53:38,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:38,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:53:38,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:53:38,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:53:38,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 333 [2022-12-13 19:53:38,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2022-12-13 19:53:38,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:38,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 333 [2022-12-13 19:53:38,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:38,852 INFO L130 PetriNetUnfolder]: 4046/6577 cut-off events. [2022-12-13 19:53:38,852 INFO L131 PetriNetUnfolder]: For 1397/1397 co-relation queries the response was YES. [2022-12-13 19:53:38,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15396 conditions, 6577 events. 4046/6577 cut-off events. For 1397/1397 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 42183 event pairs, 559 based on Foata normal form. 0/5420 useless extension candidates. Maximal degree in co-relation 12792. Up to 5391 conditions per place. [2022-12-13 19:53:38,875 INFO L137 encePairwiseOnDemand]: 329/333 looper letters, 84 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2022-12-13 19:53:38,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 96 transitions, 484 flow [2022-12-13 19:53:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:53:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:53:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2022-12-13 19:53:38,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5335335335335335 [2022-12-13 19:53:38,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2022-12-13 19:53:38,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2022-12-13 19:53:38,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:38,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2022-12-13 19:53:38,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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) [2022-12-13 19:53:38,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-12-13 19:53:38,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-12-13 19:53:38,879 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 217 flow. Second operand 3 states and 533 transitions. [2022-12-13 19:53:38,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 96 transitions, 484 flow [2022-12-13 19:53:38,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:53:38,882 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 231 flow [2022-12-13 19:53:38,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2022-12-13 19:53:38,883 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2022-12-13 19:53:38,883 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 231 flow [2022-12-13 19:53:38,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2022-12-13 19:53:38,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:38,883 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:53:38,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:53:38,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 19:53:38,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2096856211, now seen corresponding path program 1 times [2022-12-13 19:53:38,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:38,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518810902] [2022-12-13 19:53:38,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:38,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:39,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:39,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518810902] [2022-12-13 19:53:39,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518810902] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:53:39,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942618244] [2022-12-13 19:53:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:39,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:53:39,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:53:39,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:53:39,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:53:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:39,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 19:53:39,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:53:39,098 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 19:53:39,099 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 [2022-12-13 19:53:39,130 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 14 treesize of output 16 [2022-12-13 19:53:39,196 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 14 treesize of output 16 [2022-12-13 19:53:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:39,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:53:39,232 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_62 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_62) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset)))) is different from false [2022-12-13 19:53:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 19:53:39,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942618244] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:53:39,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:53:39,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 19:53:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995619075] [2022-12-13 19:53:39,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:53:39,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:53:39,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:39,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:53:39,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=64, Unknown=3, NotChecked=16, Total=110 [2022-12-13 19:53:39,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 333 [2022-12-13 19:53:39,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 231 flow. Second operand has 11 states, 11 states have (on average 130.1818181818182) internal successors, (1432), 11 states have internal predecessors, (1432), 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) [2022-12-13 19:53:39,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:39,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 333 [2022-12-13 19:53:39,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:40,135 INFO L130 PetriNetUnfolder]: 4604/7804 cut-off events. [2022-12-13 19:53:40,135 INFO L131 PetriNetUnfolder]: For 3848/3848 co-relation queries the response was YES. [2022-12-13 19:53:40,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18522 conditions, 7804 events. 4604/7804 cut-off events. For 3848/3848 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 51004 event pairs, 915 based on Foata normal form. 61/6657 useless extension candidates. Maximal degree in co-relation 18411. Up to 4827 conditions per place. [2022-12-13 19:53:40,163 INFO L137 encePairwiseOnDemand]: 308/333 looper letters, 111 selfloop transitions, 41 changer transitions 0/159 dead transitions. [2022-12-13 19:53:40,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 159 transitions, 847 flow [2022-12-13 19:53:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:53:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:53:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1035 transitions. [2022-12-13 19:53:40,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.444015444015444 [2022-12-13 19:53:40,166 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1035 transitions. [2022-12-13 19:53:40,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1035 transitions. [2022-12-13 19:53:40,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:40,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1035 transitions. [2022-12-13 19:53:40,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 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) [2022-12-13 19:53:40,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 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) [2022-12-13 19:53:40,171 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 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) [2022-12-13 19:53:40,172 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 231 flow. Second operand 7 states and 1035 transitions. [2022-12-13 19:53:40,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 159 transitions, 847 flow [2022-12-13 19:53:40,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 159 transitions, 830 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:53:40,179 INFO L231 Difference]: Finished difference. Result has 76 places, 93 transitions, 532 flow [2022-12-13 19:53:40,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=532, PETRI_PLACES=76, PETRI_TRANSITIONS=93} [2022-12-13 19:53:40,179 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2022-12-13 19:53:40,179 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 93 transitions, 532 flow [2022-12-13 19:53:40,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.1818181818182) internal successors, (1432), 11 states have internal predecessors, (1432), 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) [2022-12-13 19:53:40,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:40,180 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:53:40,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:53:40,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:53:40,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 19:53:40,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1104224369, now seen corresponding path program 1 times [2022-12-13 19:53:40,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:40,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154582801] [2022-12-13 19:53:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:40,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:53:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:40,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154582801] [2022-12-13 19:53:40,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154582801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:40,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:40,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:53:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733622034] [2022-12-13 19:53:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:53:40,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:53:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:53:40,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 333 [2022-12-13 19:53:40,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 93 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2022-12-13 19:53:40,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:40,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 333 [2022-12-13 19:53:40,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:41,085 INFO L130 PetriNetUnfolder]: 3798/6859 cut-off events. [2022-12-13 19:53:41,085 INFO L131 PetriNetUnfolder]: For 8013/8016 co-relation queries the response was YES. [2022-12-13 19:53:41,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20950 conditions, 6859 events. 3798/6859 cut-off events. For 8013/8016 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 50061 event pairs, 1234 based on Foata normal form. 262/6201 useless extension candidates. Maximal degree in co-relation 20822. Up to 3787 conditions per place. [2022-12-13 19:53:41,106 INFO L137 encePairwiseOnDemand]: 322/333 looper letters, 114 selfloop transitions, 14 changer transitions 0/135 dead transitions. [2022-12-13 19:53:41,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 135 transitions, 982 flow [2022-12-13 19:53:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:53:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:53:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2022-12-13 19:53:41,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2022-12-13 19:53:41,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2022-12-13 19:53:41,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2022-12-13 19:53:41,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:41,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2022-12-13 19:53:41,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2022-12-13 19:53:41,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-12-13 19:53:41,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-12-13 19:53:41,109 INFO L175 Difference]: Start difference. First operand has 76 places, 93 transitions, 532 flow. Second operand 3 states and 525 transitions. [2022-12-13 19:53:41,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 135 transitions, 982 flow [2022-12-13 19:53:41,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 135 transitions, 974 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 19:53:41,128 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 542 flow [2022-12-13 19:53:41,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=542, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2022-12-13 19:53:41,129 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2022-12-13 19:53:41,129 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 542 flow [2022-12-13 19:53:41,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2022-12-13 19:53:41,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:41,129 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:53:41,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:53:41,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 19:53:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 797395316, now seen corresponding path program 1 times [2022-12-13 19:53:41,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:41,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147009553] [2022-12-13 19:53:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:41,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:41,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:41,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147009553] [2022-12-13 19:53:41,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147009553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:41,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:41,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:53:41,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444259776] [2022-12-13 19:53:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:41,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:53:41,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:53:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:53:41,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 333 [2022-12-13 19:53:41,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2022-12-13 19:53:41,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:41,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 333 [2022-12-13 19:53:41,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:42,187 INFO L130 PetriNetUnfolder]: 5621/10091 cut-off events. [2022-12-13 19:53:42,187 INFO L131 PetriNetUnfolder]: For 12917/12917 co-relation queries the response was YES. [2022-12-13 19:53:42,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33930 conditions, 10091 events. 5621/10091 cut-off events. For 12917/12917 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 76945 event pairs, 2599 based on Foata normal form. 0/8776 useless extension candidates. Maximal degree in co-relation 33804. Up to 5534 conditions per place. [2022-12-13 19:53:42,220 INFO L137 encePairwiseOnDemand]: 326/333 looper letters, 118 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2022-12-13 19:53:42,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 139 transitions, 1036 flow [2022-12-13 19:53:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:53:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:53:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2022-12-13 19:53:42,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5375375375375375 [2022-12-13 19:53:42,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2022-12-13 19:53:42,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2022-12-13 19:53:42,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:42,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2022-12-13 19:53:42,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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) [2022-12-13 19:53:42,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-12-13 19:53:42,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 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) [2022-12-13 19:53:42,223 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 542 flow. Second operand 3 states and 537 transitions. [2022-12-13 19:53:42,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 139 transitions, 1036 flow [2022-12-13 19:53:42,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 139 transitions, 1006 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 19:53:42,240 INFO L231 Difference]: Finished difference. Result has 81 places, 99 transitions, 632 flow [2022-12-13 19:53:42,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=632, PETRI_PLACES=81, PETRI_TRANSITIONS=99} [2022-12-13 19:53:42,241 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2022-12-13 19:53:42,241 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 99 transitions, 632 flow [2022-12-13 19:53:42,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2022-12-13 19:53:42,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:42,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:53:42,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:53:42,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 19:53:42,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:42,241 INFO L85 PathProgramCache]: Analyzing trace with hash 797395299, now seen corresponding path program 1 times [2022-12-13 19:53:42,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:42,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692349071] [2022-12-13 19:53:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:42,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:42,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:42,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692349071] [2022-12-13 19:53:42,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692349071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:42,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:42,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:53:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294241943] [2022-12-13 19:53:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:42,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:53:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:53:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:53:42,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2022-12-13 19:53:42,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 99 transitions, 632 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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) [2022-12-13 19:53:42,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:42,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2022-12-13 19:53:42,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:43,695 INFO L130 PetriNetUnfolder]: 5932/10588 cut-off events. [2022-12-13 19:53:43,695 INFO L131 PetriNetUnfolder]: For 19893/19893 co-relation queries the response was YES. [2022-12-13 19:53:43,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37400 conditions, 10588 events. 5932/10588 cut-off events. For 19893/19893 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 80485 event pairs, 2226 based on Foata normal form. 97/9506 useless extension candidates. Maximal degree in co-relation 37279. Up to 8326 conditions per place. [2022-12-13 19:53:43,733 INFO L137 encePairwiseOnDemand]: 320/333 looper letters, 211 selfloop transitions, 49 changer transitions 0/267 dead transitions. [2022-12-13 19:53:43,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 267 transitions, 2043 flow [2022-12-13 19:53:43,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:53:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:53:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1937 transitions. [2022-12-13 19:53:43,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4847347347347347 [2022-12-13 19:53:43,741 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1937 transitions. [2022-12-13 19:53:43,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1937 transitions. [2022-12-13 19:53:43,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:43,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1937 transitions. [2022-12-13 19:53:43,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 161.41666666666666) internal successors, (1937), 12 states have internal predecessors, (1937), 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) [2022-12-13 19:53:43,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 333.0) internal successors, (4329), 13 states have internal predecessors, (4329), 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) [2022-12-13 19:53:43,757 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 333.0) internal successors, (4329), 13 states have internal predecessors, (4329), 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) [2022-12-13 19:53:43,757 INFO L175 Difference]: Start difference. First operand has 81 places, 99 transitions, 632 flow. Second operand 12 states and 1937 transitions. [2022-12-13 19:53:43,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 267 transitions, 2043 flow [2022-12-13 19:53:43,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 267 transitions, 1991 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 19:53:43,797 INFO L231 Difference]: Finished difference. Result has 94 places, 126 transitions, 972 flow [2022-12-13 19:53:43,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=972, PETRI_PLACES=94, PETRI_TRANSITIONS=126} [2022-12-13 19:53:43,798 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 39 predicate places. [2022-12-13 19:53:43,798 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 126 transitions, 972 flow [2022-12-13 19:53:43,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 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) [2022-12-13 19:53:43,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:43,798 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 19:53:43,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:53:43,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 19:53:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash 28102373, now seen corresponding path program 1 times [2022-12-13 19:53:43,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:43,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703306343] [2022-12-13 19:53:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:43,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:53:43,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:53:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:53:43,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:53:43,846 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:53:43,846 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 19:53:43,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 19:53:43,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 19:53:43,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 19:53:43,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 19:53:43,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 19:53:43,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 19:53:43,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 19:53:43,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-13 19:53:43,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-13 19:53:43,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-13 19:53:43,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 19:53:43,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 19:53:43,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 19:53:43,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 19:53:43,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 19:53:43,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 19:53:43,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:53:43,850 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:53:43,850 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:53:43,850 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 19:53:43,881 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 19:53:43,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2022-12-13 19:53:43,956 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2022-12-13 19:53:43,956 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:53:43,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1596 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2022-12-13 19:53:43,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 224 transitions, 478 flow [2022-12-13 19:53:43,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 224 transitions, 478 flow [2022-12-13 19:53:43,963 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:53:43,963 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 224 transitions, 478 flow [2022-12-13 19:53:43,964 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 224 transitions, 478 flow [2022-12-13 19:53:43,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2022-12-13 19:53:44,021 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2022-12-13 19:53:44,022 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:53:44,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1596 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2022-12-13 19:53:44,037 INFO L119 LiptonReduction]: Number of co-enabled transitions 24354 [2022-12-13 19:53:47,054 INFO L134 LiptonReduction]: Checked pairs total: 60299 [2022-12-13 19:53:47,054 INFO L136 LiptonReduction]: Total number of compositions: 188 [2022-12-13 19:53:47,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:53:47,056 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;@6e787489, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:53:47,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 19:53:47,058 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2022-12-13 19:53:47,058 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:53:47,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:47,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:53:47,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:53:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1288920763, now seen corresponding path program 1 times [2022-12-13 19:53:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:47,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986880877] [2022-12-13 19:53:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:47,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:47,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986880877] [2022-12-13 19:53:47,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986880877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:47,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:47,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:53:47,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971723938] [2022-12-13 19:53:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:47,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:53:47,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:53:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:53:47,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 412 [2022-12-13 19:53:47,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2022-12-13 19:53:47,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:47,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 412 [2022-12-13 19:53:47,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:53,810 INFO L130 PetriNetUnfolder]: 83377/119745 cut-off events. [2022-12-13 19:53:53,810 INFO L131 PetriNetUnfolder]: For 2397/2397 co-relation queries the response was YES. [2022-12-13 19:53:53,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237430 conditions, 119745 events. 83377/119745 cut-off events. For 2397/2397 co-relation queries the response was YES. Maximal size of possible extension queue 3261. Compared 896510 event pairs, 83136 based on Foata normal form. 16165/98583 useless extension candidates. Maximal degree in co-relation 55856. Up to 116078 conditions per place. [2022-12-13 19:53:54,238 INFO L137 encePairwiseOnDemand]: 389/412 looper letters, 57 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2022-12-13 19:53:54,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 282 flow [2022-12-13 19:53:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:53:54,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:53:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2022-12-13 19:53:54,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5258899676375405 [2022-12-13 19:53:54,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2022-12-13 19:53:54,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2022-12-13 19:53:54,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:54,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2022-12-13 19:53:54,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 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) [2022-12-13 19:53:54,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 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) [2022-12-13 19:53:54,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 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) [2022-12-13 19:53:54,244 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 210 flow. Second operand 3 states and 650 transitions. [2022-12-13 19:53:54,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 282 flow [2022-12-13 19:53:54,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:53:54,248 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 168 flow [2022-12-13 19:53:54,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2022-12-13 19:53:54,249 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2022-12-13 19:53:54,249 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 168 flow [2022-12-13 19:53:54,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2022-12-13 19:53:54,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:54,249 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:53:54,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:53:54,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:53:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1288920762, now seen corresponding path program 1 times [2022-12-13 19:53:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:54,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089139856] [2022-12-13 19:53:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:54,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:54,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089139856] [2022-12-13 19:53:54,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089139856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:54,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:54,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:53:54,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450708604] [2022-12-13 19:53:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:54,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:53:54,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:54,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:53:54,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:53:54,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 412 [2022-12-13 19:53:54,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2022-12-13 19:53:54,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:54,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 412 [2022-12-13 19:53:54,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:54:01,136 INFO L130 PetriNetUnfolder]: 83363/120041 cut-off events. [2022-12-13 19:54:01,136 INFO L131 PetriNetUnfolder]: For 2429/2429 co-relation queries the response was YES. [2022-12-13 19:54:01,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237724 conditions, 120041 events. 83363/120041 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 3272. Compared 902830 event pairs, 54042 based on Foata normal form. 0/82800 useless extension candidates. Maximal degree in co-relation 237715. Up to 116032 conditions per place. [2022-12-13 19:54:01,571 INFO L137 encePairwiseOnDemand]: 408/412 looper letters, 71 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2022-12-13 19:54:01,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 344 flow [2022-12-13 19:54:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:54:01,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:54:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2022-12-13 19:54:01,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5218446601941747 [2022-12-13 19:54:01,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2022-12-13 19:54:01,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2022-12-13 19:54:01,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:54:01,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2022-12-13 19:54:01,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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) [2022-12-13 19:54:01,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 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) [2022-12-13 19:54:01,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 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) [2022-12-13 19:54:01,576 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 168 flow. Second operand 3 states and 645 transitions. [2022-12-13 19:54:01,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 344 flow [2022-12-13 19:54:01,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 83 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:54:01,579 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 181 flow [2022-12-13 19:54:01,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2022-12-13 19:54:01,579 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2022-12-13 19:54:01,579 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 181 flow [2022-12-13 19:54:01,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2022-12-13 19:54:01,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:54:01,580 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:54:01,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:54:01,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:54:01,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:54:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1711815572, now seen corresponding path program 1 times [2022-12-13 19:54:01,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:54:01,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597741001] [2022-12-13 19:54:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:54:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:54:01,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:54:01,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597741001] [2022-12-13 19:54:01,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597741001] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:54:01,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:54:01,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:54:01,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106717726] [2022-12-13 19:54:01,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:54:01,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:54:01,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:54:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:54:01,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:54:01,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 412 [2022-12-13 19:54:01,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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) [2022-12-13 19:54:01,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:54:01,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 412 [2022-12-13 19:54:01,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:54:12,203 INFO L130 PetriNetUnfolder]: 125547/184819 cut-off events. [2022-12-13 19:54:12,203 INFO L131 PetriNetUnfolder]: For 9664/9664 co-relation queries the response was YES. [2022-12-13 19:54:12,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372525 conditions, 184819 events. 125547/184819 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 5225. Compared 1530631 event pairs, 32828 based on Foata normal form. 0/132622 useless extension candidates. Maximal degree in co-relation 372514. Up to 112839 conditions per place. [2022-12-13 19:54:12,949 INFO L137 encePairwiseOnDemand]: 399/412 looper letters, 177 selfloop transitions, 24 changer transitions 0/211 dead transitions. [2022-12-13 19:54:12,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 211 transitions, 924 flow [2022-12-13 19:54:12,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:54:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:54:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1288 transitions. [2022-12-13 19:54:12,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5210355987055016 [2022-12-13 19:54:12,952 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1288 transitions. [2022-12-13 19:54:12,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1288 transitions. [2022-12-13 19:54:12,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:54:12,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1288 transitions. [2022-12-13 19:54:12,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.66666666666666) internal successors, (1288), 6 states have internal predecessors, (1288), 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) [2022-12-13 19:54:12,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 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) [2022-12-13 19:54:12,958 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 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) [2022-12-13 19:54:12,958 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 181 flow. Second operand 6 states and 1288 transitions. [2022-12-13 19:54:12,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 211 transitions, 924 flow [2022-12-13 19:54:12,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 211 transitions, 920 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:54:12,982 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 351 flow [2022-12-13 19:54:12,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2022-12-13 19:54:12,983 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2022-12-13 19:54:12,983 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 351 flow [2022-12-13 19:54:12,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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) [2022-12-13 19:54:12,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:54:12,983 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:54:12,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:54:12,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:54:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:54:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash -436666746, now seen corresponding path program 1 times [2022-12-13 19:54:12,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:54:12,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171956198] [2022-12-13 19:54:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:12,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:54:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:54:13,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:54:13,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171956198] [2022-12-13 19:54:13,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171956198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:54:13,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:54:13,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:54:13,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391667483] [2022-12-13 19:54:13,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:54:13,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:54:13,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:54:13,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:54:13,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:54:13,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 412 [2022-12-13 19:54:13,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2022-12-13 19:54:13,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:54:13,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 412 [2022-12-13 19:54:13,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:54:24,127 INFO L130 PetriNetUnfolder]: 117179/171672 cut-off events. [2022-12-13 19:54:24,127 INFO L131 PetriNetUnfolder]: For 63833/63833 co-relation queries the response was YES. [2022-12-13 19:54:24,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412106 conditions, 171672 events. 117179/171672 cut-off events. For 63833/63833 co-relation queries the response was YES. Maximal size of possible extension queue 4883. Compared 1407969 event pairs, 34904 based on Foata normal form. 0/135188 useless extension candidates. Maximal degree in co-relation 412089. Up to 144570 conditions per place. [2022-12-13 19:54:24,966 INFO L137 encePairwiseOnDemand]: 408/412 looper letters, 123 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2022-12-13 19:54:24,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 749 flow [2022-12-13 19:54:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:54:24,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:54:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2022-12-13 19:54:24,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5380258899676376 [2022-12-13 19:54:24,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2022-12-13 19:54:24,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2022-12-13 19:54:24,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:54:24,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2022-12-13 19:54:24,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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) [2022-12-13 19:54:24,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 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) [2022-12-13 19:54:24,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 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) [2022-12-13 19:54:24,972 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 351 flow. Second operand 3 states and 665 transitions. [2022-12-13 19:54:24,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 749 flow [2022-12-13 19:54:25,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 749 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:54:25,108 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 368 flow [2022-12-13 19:54:25,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2022-12-13 19:54:25,108 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2022-12-13 19:54:25,108 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 368 flow [2022-12-13 19:54:25,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2022-12-13 19:54:25,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:54:25,108 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:54:25,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:54:25,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:54:25,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:54:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1802038410, now seen corresponding path program 1 times [2022-12-13 19:54:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:54:25,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059747386] [2022-12-13 19:54:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:25,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:54:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:54:25,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:54:25,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059747386] [2022-12-13 19:54:25,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059747386] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:54:25,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982540927] [2022-12-13 19:54:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:25,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:54:25,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:54:25,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:54:25,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:54:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:25,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 19:54:25,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:54:25,244 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 19:54:25,244 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 [2022-12-13 19:54:25,262 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 14 treesize of output 16 [2022-12-13 19:54:25,309 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 14 treesize of output 16 [2022-12-13 19:54:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:54:25,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:54:25,331 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_154 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_154) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset) 2147483647)) is different from false [2022-12-13 19:54:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 19:54:25,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982540927] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:54:25,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:54:25,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 19:54:25,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459552738] [2022-12-13 19:54:25,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:54:25,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:54:25,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:54:25,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:54:25,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2022-12-13 19:54:25,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 412 [2022-12-13 19:54:25,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 368 flow. Second operand has 11 states, 11 states have (on average 160.1818181818182) internal successors, (1762), 11 states have internal predecessors, (1762), 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) [2022-12-13 19:54:25,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:54:25,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 412 [2022-12-13 19:54:25,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:54:37,727 INFO L130 PetriNetUnfolder]: 122766/181409 cut-off events. [2022-12-13 19:54:37,727 INFO L131 PetriNetUnfolder]: For 105804/105804 co-relation queries the response was YES. [2022-12-13 19:54:38,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444528 conditions, 181409 events. 122766/181409 cut-off events. For 105804/105804 co-relation queries the response was YES. Maximal size of possible extension queue 5304. Compared 1499254 event pairs, 46810 based on Foata normal form. 379/143450 useless extension candidates. Maximal degree in co-relation 444508. Up to 148372 conditions per place. [2022-12-13 19:54:38,602 INFO L137 encePairwiseOnDemand]: 400/412 looper letters, 160 selfloop transitions, 30 changer transitions 0/200 dead transitions. [2022-12-13 19:54:38,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 200 transitions, 1127 flow [2022-12-13 19:54:38,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:54:38,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:54:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1113 transitions. [2022-12-13 19:54:38,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45024271844660196 [2022-12-13 19:54:38,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1113 transitions. [2022-12-13 19:54:38,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1113 transitions. [2022-12-13 19:54:38,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:54:38,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1113 transitions. [2022-12-13 19:54:38,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.5) internal successors, (1113), 6 states have internal predecessors, (1113), 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) [2022-12-13 19:54:38,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 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) [2022-12-13 19:54:38,613 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 412.0) internal successors, (2884), 7 states have internal predecessors, (2884), 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) [2022-12-13 19:54:38,613 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 368 flow. Second operand 6 states and 1113 transitions. [2022-12-13 19:54:38,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 200 transitions, 1127 flow [2022-12-13 19:54:39,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 200 transitions, 1113 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:54:39,475 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 581 flow [2022-12-13 19:54:39,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=581, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2022-12-13 19:54:39,476 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 21 predicate places. [2022-12-13 19:54:39,476 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 581 flow [2022-12-13 19:54:39,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 160.1818181818182) internal successors, (1762), 11 states have internal predecessors, (1762), 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) [2022-12-13 19:54:39,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:54:39,477 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:54:39,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 19:54:39,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 19:54:39,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:54:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:54:39,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1279430507, now seen corresponding path program 1 times [2022-12-13 19:54:39,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:54:39,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504218440] [2022-12-13 19:54:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:39,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:54:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:54:39,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:54:39,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504218440] [2022-12-13 19:54:39,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504218440] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:54:39,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055115586] [2022-12-13 19:54:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:39,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:54:39,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:54:39,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:54:39,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:54:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:39,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 19:54:39,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:54:39,844 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 19:54:39,844 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 [2022-12-13 19:54:39,863 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 14 treesize of output 16 [2022-12-13 19:54:39,896 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 14 treesize of output 16 [2022-12-13 19:54:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:54:39,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:54:39,961 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_176 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_176) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-12-13 19:54:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-12-13 19:54:39,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055115586] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:54:39,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:54:39,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 19:54:39,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508530368] [2022-12-13 19:54:39,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:54:39,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:54:39,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:54:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:54:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2022-12-13 19:54:40,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 412 [2022-12-13 19:54:40,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 581 flow. Second operand has 11 states, 11 states have (on average 160.45454545454547) internal successors, (1765), 11 states have internal predecessors, (1765), 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) [2022-12-13 19:54:40,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:54:40,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 412 [2022-12-13 19:54:40,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:54:55,116 INFO L130 PetriNetUnfolder]: 135629/204913 cut-off events. [2022-12-13 19:54:55,116 INFO L131 PetriNetUnfolder]: For 203609/203609 co-relation queries the response was YES. [2022-12-13 19:54:55,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533687 conditions, 204913 events. 135629/204913 cut-off events. For 203609/203609 co-relation queries the response was YES. Maximal size of possible extension queue 6616. Compared 1810971 event pairs, 30646 based on Foata normal form. 0/170163 useless extension candidates. Maximal degree in co-relation 533663. Up to 108479 conditions per place. [2022-12-13 19:54:56,295 INFO L137 encePairwiseOnDemand]: 398/412 looper letters, 251 selfloop transitions, 90 changer transitions 0/351 dead transitions. [2022-12-13 19:54:56,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 351 transitions, 2241 flow [2022-12-13 19:54:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:54:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:54:56,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1869 transitions. [2022-12-13 19:54:56,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45364077669902914 [2022-12-13 19:54:56,299 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1869 transitions. [2022-12-13 19:54:56,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1869 transitions. [2022-12-13 19:54:56,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:54:56,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1869 transitions. [2022-12-13 19:54:56,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 186.9) internal successors, (1869), 10 states have internal predecessors, (1869), 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) [2022-12-13 19:54:56,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 412.0) internal successors, (4532), 11 states have internal predecessors, (4532), 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) [2022-12-13 19:54:56,305 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 412.0) internal successors, (4532), 11 states have internal predecessors, (4532), 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) [2022-12-13 19:54:56,305 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 581 flow. Second operand 10 states and 1869 transitions. [2022-12-13 19:54:56,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 351 transitions, 2241 flow [2022-12-13 19:54:56,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 351 transitions, 2241 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:54:56,839 INFO L231 Difference]: Finished difference. Result has 107 places, 164 transitions, 1231 flow [2022-12-13 19:54:56,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1231, PETRI_PLACES=107, PETRI_TRANSITIONS=164} [2022-12-13 19:54:56,839 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 34 predicate places. [2022-12-13 19:54:56,839 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 164 transitions, 1231 flow [2022-12-13 19:54:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 160.45454545454547) internal successors, (1765), 11 states have internal predecessors, (1765), 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) [2022-12-13 19:54:56,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:54:56,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:54:56,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 19:54:57,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 19:54:57,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:54:57,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:54:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1720407879, now seen corresponding path program 1 times [2022-12-13 19:54:57,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:54:57,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67653069] [2022-12-13 19:54:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:54:57,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:54:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:54:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:54:57,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:54:57,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67653069] [2022-12-13 19:54:57,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67653069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:54:57,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:54:57,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:54:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656424918] [2022-12-13 19:54:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:54:57,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:54:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:54:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:54:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:54:57,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 412 [2022-12-13 19:54:57,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 164 transitions, 1231 flow. Second operand has 7 states, 7 states have (on average 178.28571428571428) internal successors, (1248), 7 states have internal predecessors, (1248), 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) [2022-12-13 19:54:57,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:54:57,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 412 [2022-12-13 19:54:57,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:55:22,445 INFO L130 PetriNetUnfolder]: 198954/299984 cut-off events. [2022-12-13 19:55:22,445 INFO L131 PetriNetUnfolder]: For 428606/428606 co-relation queries the response was YES. [2022-12-13 19:55:23,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844186 conditions, 299984 events. 198954/299984 cut-off events. For 428606/428606 co-relation queries the response was YES. Maximal size of possible extension queue 9750. Compared 2749357 event pairs, 33651 based on Foata normal form. 3507/264167 useless extension candidates. Maximal degree in co-relation 844156. Up to 123483 conditions per place. [2022-12-13 19:55:24,321 INFO L137 encePairwiseOnDemand]: 396/412 looper letters, 456 selfloop transitions, 185 changer transitions 0/651 dead transitions. [2022-12-13 19:55:24,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 651 transitions, 4706 flow [2022-12-13 19:55:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:55:24,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 19:55:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3158 transitions. [2022-12-13 19:55:24,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5110032362459547 [2022-12-13 19:55:24,328 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3158 transitions. [2022-12-13 19:55:24,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3158 transitions. [2022-12-13 19:55:24,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:55:24,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3158 transitions. [2022-12-13 19:55:24,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 210.53333333333333) internal successors, (3158), 15 states have internal predecessors, (3158), 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) [2022-12-13 19:55:24,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 412.0) internal successors, (6592), 16 states have internal predecessors, (6592), 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) [2022-12-13 19:55:24,338 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 412.0) internal successors, (6592), 16 states have internal predecessors, (6592), 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) [2022-12-13 19:55:24,338 INFO L175 Difference]: Start difference. First operand has 107 places, 164 transitions, 1231 flow. Second operand 15 states and 3158 transitions. [2022-12-13 19:55:24,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 651 transitions, 4706 flow [2022-12-13 19:55:31,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 651 transitions, 4702 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 19:55:31,558 INFO L231 Difference]: Finished difference. Result has 129 places, 277 transitions, 2951 flow [2022-12-13 19:55:31,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2951, PETRI_PLACES=129, PETRI_TRANSITIONS=277} [2022-12-13 19:55:31,559 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 56 predicate places. [2022-12-13 19:55:31,559 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 277 transitions, 2951 flow [2022-12-13 19:55:31,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.28571428571428) internal successors, (1248), 7 states have internal predecessors, (1248), 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) [2022-12-13 19:55:31,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:55:31,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:55:31,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:55:31,559 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:55:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1720407910, now seen corresponding path program 1 times [2022-12-13 19:55:31,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:31,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462366207] [2022-12-13 19:55:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:31,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:31,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:31,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462366207] [2022-12-13 19:55:31,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462366207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:31,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:55:31,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:55:31,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753293471] [2022-12-13 19:55:31,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:31,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:55:31,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:55:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:55:31,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 412 [2022-12-13 19:55:31,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 277 transitions, 2951 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) [2022-12-13 19:55:31,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:55:31,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 412 [2022-12-13 19:55:31,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:56:09,775 INFO L130 PetriNetUnfolder]: 234610/353369 cut-off events. [2022-12-13 19:56:09,775 INFO L131 PetriNetUnfolder]: For 1008550/1008550 co-relation queries the response was YES. [2022-12-13 19:56:11,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142380 conditions, 353369 events. 234610/353369 cut-off events. For 1008550/1008550 co-relation queries the response was YES. Maximal size of possible extension queue 11502. Compared 3297527 event pairs, 123981 based on Foata normal form. 7008/322374 useless extension candidates. Maximal degree in co-relation 1142340. Up to 223252 conditions per place. [2022-12-13 19:56:12,481 INFO L137 encePairwiseOnDemand]: 405/412 looper letters, 313 selfloop transitions, 57 changer transitions 0/380 dead transitions. [2022-12-13 19:56:12,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 380 transitions, 4579 flow [2022-12-13 19:56:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:56:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:56:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-12-13 19:56:12,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5347896440129449 [2022-12-13 19:56:12,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-12-13 19:56:12,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-12-13 19:56:12,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:56:12,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-12-13 19:56:12,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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) [2022-12-13 19:56:12,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 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) [2022-12-13 19:56:12,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 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) [2022-12-13 19:56:12,487 INFO L175 Difference]: Start difference. First operand has 129 places, 277 transitions, 2951 flow. Second operand 3 states and 661 transitions. [2022-12-13 19:56:12,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 380 transitions, 4579 flow [2022-12-13 19:57:36,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 380 transitions, 4098 flow, removed 95 selfloop flow, removed 6 redundant places. [2022-12-13 19:57:36,014 INFO L231 Difference]: Finished difference. Result has 127 places, 292 transitions, 3001 flow [2022-12-13 19:57:36,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3001, PETRI_PLACES=127, PETRI_TRANSITIONS=292} [2022-12-13 19:57:36,014 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 54 predicate places. [2022-12-13 19:57:36,015 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 292 transitions, 3001 flow [2022-12-13 19:57:36,015 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) [2022-12-13 19:57:36,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:57:36,015 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:36,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 19:57:36,015 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:57:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:36,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1106368291, now seen corresponding path program 1 times [2022-12-13 19:57:36,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:36,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478883932] [2022-12-13 19:57:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:36,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:36,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:36,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478883932] [2022-12-13 19:57:36,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478883932] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:57:36,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419369183] [2022-12-13 19:57:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:36,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:57:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:36,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:57:36,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:57:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:36,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 19:57:36,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:57:36,222 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 19:57:36,222 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 [2022-12-13 19:57:36,241 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 14 treesize of output 16 [2022-12-13 19:57:36,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-13 19:57:36,321 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 14 treesize of output 16 [2022-12-13 19:57:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:36,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:57:36,373 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_240 (Array Int Int)) (v_ArrVal_239 Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| c_t_funThread1of3ForFork0_~p~0.base (store (select |c_#memory_int| c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset v_ArrVal_239)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_240) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset) 2147483648)) (not (<= (+ |c_t_funThread1of3ForFork0_#t~post6| 1) v_ArrVal_239)))) is different from false [2022-12-13 19:57:36,383 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_240 (Array Int Int)) (v_ArrVal_239 Int)) (let ((.cse0 (select |c_#memory_int| c_t_funThread1of3ForFork0_~p~0.base))) (or (< 0 (+ (select (select (store (store |c_#memory_int| c_t_funThread1of3ForFork0_~p~0.base (store .cse0 c_t_funThread1of3ForFork0_~p~0.offset v_ArrVal_239)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_240) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset) 2147483648)) (< v_ArrVal_239 (+ (select .cse0 c_t_funThread1of3ForFork0_~p~0.offset) 1))))) is different from false [2022-12-13 19:57:36,406 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_240 (Array Int Int)) (v_ArrVal_239 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#global~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#global~0.base| (store .cse0 |c_~#global~0.offset| v_ArrVal_239)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_240) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483648)) (< v_ArrVal_239 (+ (select .cse0 |c_~#global~0.offset|) 1))))) is different from false [2022-12-13 19:57:36,438 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array Int Int)) (v_ArrVal_240 (Array Int Int)) (v_ArrVal_239 Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_237))) (let ((.cse0 (select .cse1 |c_~#global~0.base|))) (or (< v_ArrVal_239 (+ (select .cse0 |c_~#global~0.offset|) 1)) (< 0 (+ (select (select (store (store .cse1 |c_~#global~0.base| (store .cse0 |c_~#global~0.offset| v_ArrVal_239)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_240) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483648)))))) is different from false [2022-12-13 19:57:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 19:57:36,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419369183] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:57:36,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:57:36,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 16 [2022-12-13 19:57:36,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936182596] [2022-12-13 19:57:36,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:57:36,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 19:57:36,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:36,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 19:57:36,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=139, Unknown=6, NotChecked=108, Total=306 [2022-12-13 19:57:36,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 412 [2022-12-13 19:57:36,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 292 transitions, 3001 flow. Second operand has 18 states, 18 states have (on average 153.83333333333334) internal successors, (2769), 18 states have internal predecessors, (2769), 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) [2022-12-13 19:57:36,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:57:36,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 412 [2022-12-13 19:57:36,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:20,604 INFO L130 PetriNetUnfolder]: 282674/423925 cut-off events. [2022-12-13 19:58:20,604 INFO L131 PetriNetUnfolder]: For 1373767/1373767 co-relation queries the response was YES. [2022-12-13 19:58:22,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415283 conditions, 423925 events. 282674/423925 cut-off events. For 1373767/1373767 co-relation queries the response was YES. Maximal size of possible extension queue 13939. Compared 3982649 event pairs, 84730 based on Foata normal form. 4726/383442 useless extension candidates. Maximal degree in co-relation 1415245. Up to 249564 conditions per place. [2022-12-13 19:58:23,994 INFO L137 encePairwiseOnDemand]: 395/412 looper letters, 567 selfloop transitions, 310 changer transitions 0/887 dead transitions. [2022-12-13 19:58:23,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 887 transitions, 9117 flow [2022-12-13 19:58:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:58:23,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 19:58:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2378 transitions. [2022-12-13 19:58:23,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4439880507841673 [2022-12-13 19:58:23,999 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2378 transitions. [2022-12-13 19:58:23,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2378 transitions. [2022-12-13 19:58:24,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:24,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2378 transitions. [2022-12-13 19:58:24,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 182.92307692307693) internal successors, (2378), 13 states have internal predecessors, (2378), 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) [2022-12-13 19:58:24,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 412.0) internal successors, (5768), 14 states have internal predecessors, (5768), 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) [2022-12-13 19:58:24,007 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 412.0) internal successors, (5768), 14 states have internal predecessors, (5768), 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) [2022-12-13 19:58:24,007 INFO L175 Difference]: Start difference. First operand has 127 places, 292 transitions, 3001 flow. Second operand 13 states and 2378 transitions. [2022-12-13 19:58:24,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 887 transitions, 9117 flow [2022-12-13 19:59:56,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 887 transitions, 8819 flow, removed 17 selfloop flow, removed 2 redundant places. [2022-12-13 19:59:56,620 INFO L231 Difference]: Finished difference. Result has 147 places, 539 transitions, 6808 flow [2022-12-13 19:59:56,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6808, PETRI_PLACES=147, PETRI_TRANSITIONS=539} [2022-12-13 19:59:56,621 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 74 predicate places. [2022-12-13 19:59:56,621 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 539 transitions, 6808 flow [2022-12-13 19:59:56,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 153.83333333333334) internal successors, (2769), 18 states have internal predecessors, (2769), 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) [2022-12-13 19:59:56,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:59:56,621 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:59:56,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:59:56,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-13 19:59:56,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:59:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:59:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1106368260, now seen corresponding path program 1 times [2022-12-13 19:59:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:59:56,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182936691] [2022-12-13 19:59:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:59:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:59:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:59:56,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:59:56,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182936691] [2022-12-13 19:59:56,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182936691] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:59:56,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984313670] [2022-12-13 19:59:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:59:56,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:59:56,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:59:56,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:59:56,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:59:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:59:56,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 19:59:56,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:59:57,006 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 19:59:57,006 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 [2022-12-13 19:59:57,043 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 11 treesize of output 7 [2022-12-13 19:59:57,061 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 14 treesize of output 16 [2022-12-13 19:59:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:59:57,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:59:57,092 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_275 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_275) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset) 2147483649)) is different from false [2022-12-13 19:59:57,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 19:59:57,104 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-12-13 19:59:57,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-12-13 19:59:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 19:59:57,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984313670] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:59:57,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:59:57,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2022-12-13 19:59:57,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979539877] [2022-12-13 19:59:57,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:59:57,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:59:57,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:59:57,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:59:57,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=141, Unknown=1, NotChecked=24, Total=210 [2022-12-13 19:59:57,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 412 [2022-12-13 19:59:57,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 539 transitions, 6808 flow. Second operand has 15 states, 15 states have (on average 154.2) internal successors, (2313), 15 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:59:57,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:59:57,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 412 [2022-12-13 19:59:57,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:01:01,020 INFO L130 PetriNetUnfolder]: 317307/477608 cut-off events. [2022-12-13 20:01:01,020 INFO L131 PetriNetUnfolder]: For 2174849/2174849 co-relation queries the response was YES. [2022-12-13 20:01:03,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818273 conditions, 477608 events. 317307/477608 cut-off events. For 2174849/2174849 co-relation queries the response was YES. Maximal size of possible extension queue 15514. Compared 4566730 event pairs, 42186 based on Foata normal form. 3395/430601 useless extension candidates. Maximal degree in co-relation 1818224. Up to 89043 conditions per place. [2022-12-13 20:01:05,567 INFO L137 encePairwiseOnDemand]: 396/412 looper letters, 1020 selfloop transitions, 672 changer transitions 2/1704 dead transitions. [2022-12-13 20:01:05,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 1704 transitions, 18512 flow [2022-12-13 20:01:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 20:01:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 20:01:05,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4523 transitions. [2022-12-13 20:01:05,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4574231391585761 [2022-12-13 20:01:05,573 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4523 transitions. [2022-12-13 20:01:05,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4523 transitions. [2022-12-13 20:01:05,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:01:05,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4523 transitions. [2022-12-13 20:01:05,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 188.45833333333334) internal successors, (4523), 24 states have internal predecessors, (4523), 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) [2022-12-13 20:01:05,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 412.0) internal successors, (10300), 25 states have internal predecessors, (10300), 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) [2022-12-13 20:01:05,593 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 412.0) internal successors, (10300), 25 states have internal predecessors, (10300), 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) [2022-12-13 20:01:05,594 INFO L175 Difference]: Start difference. First operand has 147 places, 539 transitions, 6808 flow. Second operand 24 states and 4523 transitions. [2022-12-13 20:01:05,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 1704 transitions, 18512 flow [2022-12-13 20:04:48,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1704 transitions, 18143 flow, removed 151 selfloop flow, removed 3 redundant places. [2022-12-13 20:04:48,020 INFO L231 Difference]: Finished difference. Result has 184 places, 896 transitions, 13778 flow [2022-12-13 20:04:48,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=6496, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=366, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=13778, PETRI_PLACES=184, PETRI_TRANSITIONS=896} [2022-12-13 20:04:48,020 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 111 predicate places. [2022-12-13 20:04:48,021 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 896 transitions, 13778 flow [2022-12-13 20:04:48,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 154.2) internal successors, (2313), 15 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:04:48,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:04:48,021 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 20:04:48,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:04:48,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21869dee-037c-4002-a138-aebd504b65f9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:04:48,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:04:48,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash -613669648, now seen corresponding path program 1 times [2022-12-13 20:04:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:48,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054428977] [2022-12-13 20:04:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:48,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:04:48,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:04:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:04:48,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:04:48,260 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:04:48,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 20:04:48,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 20:04:48,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 20:04:48,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 20:04:48,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 20:04:48,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 20:04:48,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 20:04:48,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 20:04:48,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 20:04:48,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 20:04:48,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 20:04:48,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 20:04:48,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 20:04:48,263 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:04:48,263 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:04:48,263 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 20:04:48,284 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 20:04:48,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 267 transitions, 578 flow [2022-12-13 20:04:48,351 INFO L130 PetriNetUnfolder]: 81/692 cut-off events. [2022-12-13 20:04:48,351 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:04:48,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 692 events. 81/692 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2803 event pairs, 6 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 470. Up to 32 conditions per place. [2022-12-13 20:04:48,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 267 transitions, 578 flow [2022-12-13 20:04:48,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 267 transitions, 578 flow [2022-12-13 20:04:48,358 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:04:48,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 267 transitions, 578 flow [2022-12-13 20:04:48,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 267 transitions, 578 flow [2022-12-13 20:04:48,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 267 transitions, 578 flow [2022-12-13 20:04:48,422 INFO L130 PetriNetUnfolder]: 81/692 cut-off events. [2022-12-13 20:04:48,422 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:04:48,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 692 events. 81/692 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2803 event pairs, 6 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 470. Up to 32 conditions per place. [2022-12-13 20:04:48,441 INFO L119 LiptonReduction]: Number of co-enabled transitions 39688 [2022-12-13 20:04:51,134 INFO L134 LiptonReduction]: Checked pairs total: 92499 [2022-12-13 20:04:51,135 INFO L136 LiptonReduction]: Total number of compositions: 217 [2022-12-13 20:04:51,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:04:51,136 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;@6e787489, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:04:51,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 20:04:51,138 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2022-12-13 20:04:51,138 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:04:51,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:04:51,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:04:51,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 20:04:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:04:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1790794566, now seen corresponding path program 1 times [2022-12-13 20:04:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:04:51,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674166082] [2022-12-13 20:04:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:04:51,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:04:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:04:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:04:51,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:04:51,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674166082] [2022-12-13 20:04:51,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674166082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:04:51,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:04:51,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:04:51,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395171894] [2022-12-13 20:04:51,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:04:51,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:04:51,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:04:51,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:04:51,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:04:51,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 484 [2022-12-13 20:04:51,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 113 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2022-12-13 20:04:51,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:04:51,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 484 [2022-12-13 20:04:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand