./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/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_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/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_a9b74025-8757-4cb0-984d-c15a327e64fa/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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- 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 12:57:36,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:57:36,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:57:36,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:57:36,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:57:36,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:57:36,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:57:36,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:57:36,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:57:36,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:57:36,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:57:36,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:57:36,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:57:36,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:57:36,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:57:36,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:57:36,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:57:36,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:57:36,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:57:36,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:57:36,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:57:36,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:57:36,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:57:36,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:57:36,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:57:36,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:57:36,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:57:36,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:57:36,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:57:36,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:57:36,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:57:36,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:57:36,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:57:36,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:57:36,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:57:36,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:57:36,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:57:36,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:57:36,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:57:36,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:57:36,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:57:36,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:57:36,864 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:57:36,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:57:36,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:57:36,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:57:36,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:57:36,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:57:36,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:57:36,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:57:36,877 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:57:36,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:57:36,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:57:36,877 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:57:36,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:57:36,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:57:36,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:57:36,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:57:36,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:57:36,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:57:36,879 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:57:36,879 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:57:36,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:57:36,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:57:36,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:57:36,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:57:36,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:57:36,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:57:36,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:57:36,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:57:36,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:57:36,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:57:36,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:57:36,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:57:36,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:57:36,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:57:36,881 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:57:36,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:57:36,881 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:57:36,882 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_a9b74025-8757-4cb0-984d-c15a327e64fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2022-12-13 12:57:37,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:57:37,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:57:37,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:57:37,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:57:37,089 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:57:37,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-12-13 12:57:39,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:57:39,880 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:57:39,881 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-12-13 12:57:39,891 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/data/6a0862f20/ec4837bfc2d14538b889a3f71bec8c68/FLAG52bbc7715 [2022-12-13 12:57:39,901 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/data/6a0862f20/ec4837bfc2d14538b889a3f71bec8c68 [2022-12-13 12:57:39,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:57:39,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:57:39,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:57:39,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:57:39,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:57:39,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:57:39" (1/1) ... [2022-12-13 12:57:39,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b3cea86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:39, skipping insertion in model container [2022-12-13 12:57:39,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:57:39" (1/1) ... [2022-12-13 12:57:39,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:57:39,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:57:40,247 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_a9b74025-8757-4cb0-984d-c15a327e64fa/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-12-13 12:57:40,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:57:40,270 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:57:40,295 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_a9b74025-8757-4cb0-984d-c15a327e64fa/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-12-13 12:57:40,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:57:40,337 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:57:40,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40 WrapperNode [2022-12-13 12:57:40,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:57:40,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:57:40,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:57:40,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:57:40,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,375 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2022-12-13 12:57:40,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:57:40,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:57:40,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:57:40,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:57:40,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,397 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:57:40,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:57:40,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:57:40,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:57:40,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (1/1) ... [2022-12-13 12:57:40,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:57:40,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:57:40,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:57:40,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9b74025-8757-4cb0-984d-c15a327e64fa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:57:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:57:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:57:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:57:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:57:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 12:57:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:57:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 12:57:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 12:57:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:57:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:57:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:57:40,462 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 12:57:40,572 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:57:40,574 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:57:40,756 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:57:40,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:57:40,761 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 12:57:40,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:57:40 BoogieIcfgContainer [2022-12-13 12:57:40,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:57:40,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:57:40,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:57:40,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:57:40,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:57:39" (1/3) ... [2022-12-13 12:57:40,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f0c288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:57:40, skipping insertion in model container [2022-12-13 12:57:40,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:57:40" (2/3) ... [2022-12-13 12:57:40,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f0c288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:57:40, skipping insertion in model container [2022-12-13 12:57:40,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:57:40" (3/3) ... [2022-12-13 12:57:40,770 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2022-12-13 12:57:40,776 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:57:40,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:57:40,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 12:57:40,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:57:40,826 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 12:57:40,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 141 transitions, 290 flow [2022-12-13 12:57:40,914 INFO L130 PetriNetUnfolder]: 23/185 cut-off events. [2022-12-13 12:57:40,915 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:57:40,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 23/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 427 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2022-12-13 12:57:40,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 141 transitions, 290 flow [2022-12-13 12:57:40,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 138 transitions, 284 flow [2022-12-13 12:57:40,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:57:40,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 138 transitions, 284 flow [2022-12-13 12:57:40,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 138 transitions, 284 flow [2022-12-13 12:57:40,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 138 transitions, 284 flow [2022-12-13 12:57:40,967 INFO L130 PetriNetUnfolder]: 22/182 cut-off events. [2022-12-13 12:57:40,968 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:57:40,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 22/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 426 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2022-12-13 12:57:40,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 3888 [2022-12-13 12:57:43,778 INFO L134 LiptonReduction]: Checked pairs total: 6268 [2022-12-13 12:57:43,778 INFO L136 LiptonReduction]: Total number of compositions: 133 [2022-12-13 12:57:43,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:57:43,793 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;@2e2d4803, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:57:43,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 12:57:43,796 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-12-13 12:57:43,796 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:57:43,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:43,797 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:57:43,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 12:57:43,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:43,801 INFO L85 PathProgramCache]: Analyzing trace with hash 16801986, now seen corresponding path program 1 times [2022-12-13 12:57:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:43,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757850350] [2022-12-13 12:57:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:43,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:43,978 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 12:57:43,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:43,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757850350] [2022-12-13 12:57:43,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757850350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:43,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:43,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:57:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162978123] [2022-12-13 12:57:43,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:43,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:43,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:44,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:44,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:44,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 274 [2022-12-13 12:57:44,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 12:57:44,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:44,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 274 [2022-12-13 12:57:44,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:44,106 INFO L130 PetriNetUnfolder]: 133/284 cut-off events. [2022-12-13 12:57:44,107 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:57:44,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 284 events. 133/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1153 event pairs, 99 based on Foata normal form. 11/211 useless extension candidates. Maximal degree in co-relation 551. Up to 267 conditions per place. [2022-12-13 12:57:44,109 INFO L137 encePairwiseOnDemand]: 260/274 looper letters, 39 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2022-12-13 12:57:44,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 176 flow [2022-12-13 12:57:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:44,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2022-12-13 12:57:44,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5206812652068127 [2022-12-13 12:57:44,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2022-12-13 12:57:44,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2022-12-13 12:57:44,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:44,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2022-12-13 12:57:44,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 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 12:57:44,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 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 12:57:44,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 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 12:57:44,132 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 88 flow. Second operand 3 states and 428 transitions. [2022-12-13 12:57:44,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 176 flow [2022-12-13 12:57:44,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:57:44,136 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 78 flow [2022-12-13 12:57:44,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-12-13 12:57:44,140 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2022-12-13 12:57:44,140 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 78 flow [2022-12-13 12:57:44,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 12:57:44,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:44,141 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 12:57:44,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:57:44,141 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 12:57:44,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1033125102, now seen corresponding path program 1 times [2022-12-13 12:57:44,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:44,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518978900] [2022-12-13 12:57:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:44,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:57:44,161 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:57:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:57:44,187 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:57:44,187 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:57:44,188 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-13 12:57:44,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-13 12:57:44,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-13 12:57:44,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-13 12:57:44,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-13 12:57:44,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-13 12:57:44,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-13 12:57:44,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-13 12:57:44,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-13 12:57:44,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-13 12:57:44,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-13 12:57:44,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-13 12:57:44,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-13 12:57:44,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:57:44,192 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 12:57:44,194 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:57:44,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 12:57:44,208 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:57:44,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 179 transitions, 376 flow [2022-12-13 12:57:44,239 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2022-12-13 12:57:44,240 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 12:57:44,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 899 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2022-12-13 12:57:44,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 179 transitions, 376 flow [2022-12-13 12:57:44,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 179 transitions, 376 flow [2022-12-13 12:57:44,243 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:57:44,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 179 transitions, 376 flow [2022-12-13 12:57:44,244 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 179 transitions, 376 flow [2022-12-13 12:57:44,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 179 transitions, 376 flow [2022-12-13 12:57:44,265 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2022-12-13 12:57:44,265 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 12:57:44,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 899 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2022-12-13 12:57:44,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 11736 [2022-12-13 12:57:47,239 INFO L134 LiptonReduction]: Checked pairs total: 30591 [2022-12-13 12:57:47,239 INFO L136 LiptonReduction]: Total number of compositions: 150 [2022-12-13 12:57:47,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:57:47,241 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;@2e2d4803, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:57:47,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 12:57:47,243 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 12:57:47,243 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:57:47,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:47,243 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:57:47,244 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 12:57:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:47,244 INFO L85 PathProgramCache]: Analyzing trace with hash 871006058, now seen corresponding path program 1 times [2022-12-13 12:57:47,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:47,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767794442] [2022-12-13 12:57:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:47,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:47,286 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 12:57:47,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:47,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767794442] [2022-12-13 12:57:47,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767794442] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:47,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:47,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:57:47,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531358827] [2022-12-13 12:57:47,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:47,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:47,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 329 [2022-12-13 12:57:47,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 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 12:57:47,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:47,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 329 [2022-12-13 12:57:47,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:47,970 INFO L130 PetriNetUnfolder]: 5772/9248 cut-off events. [2022-12-13 12:57:47,971 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-12-13 12:57:47,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18366 conditions, 9248 events. 5772/9248 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 57836 event pairs, 2604 based on Foata normal form. 410/6754 useless extension candidates. Maximal degree in co-relation 1965. Up to 8989 conditions per place. [2022-12-13 12:57:48,012 INFO L137 encePairwiseOnDemand]: 309/329 looper letters, 63 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-13 12:57:48,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 288 flow [2022-12-13 12:57:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2022-12-13 12:57:48,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5552178318135765 [2022-12-13 12:57:48,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2022-12-13 12:57:48,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2022-12-13 12:57:48,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:48,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2022-12-13 12:57:48,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 12:57:48,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 12:57:48,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 12:57:48,020 INFO L175 Difference]: Start difference. First operand has 56 places, 68 transitions, 154 flow. Second operand 3 states and 548 transitions. [2022-12-13 12:57:48,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 288 flow [2022-12-13 12:57:48,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:57:48,022 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 144 flow [2022-12-13 12:57:48,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2022-12-13 12:57:48,022 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-12-13 12:57:48,023 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 144 flow [2022-12-13 12:57:48,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 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 12:57:48,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:48,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:48,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:57:48,024 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 12:57:48,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:48,024 INFO L85 PathProgramCache]: Analyzing trace with hash -474395509, now seen corresponding path program 1 times [2022-12-13 12:57:48,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:48,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212106917] [2022-12-13 12:57:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:48,068 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 12:57:48,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:48,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212106917] [2022-12-13 12:57:48,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212106917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:48,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:48,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:57:48,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285000748] [2022-12-13 12:57:48,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:48,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:48,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:48,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 329 [2022-12-13 12:57:48,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 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 12:57:48,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:48,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 329 [2022-12-13 12:57:48,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:48,800 INFO L130 PetriNetUnfolder]: 6436/10650 cut-off events. [2022-12-13 12:57:48,801 INFO L131 PetriNetUnfolder]: For 560/560 co-relation queries the response was YES. [2022-12-13 12:57:48,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22387 conditions, 10650 events. 6436/10650 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 71631 event pairs, 2081 based on Foata normal form. 0/8117 useless extension candidates. Maximal degree in co-relation 22294. Up to 7671 conditions per place. [2022-12-13 12:57:48,842 INFO L137 encePairwiseOnDemand]: 315/329 looper letters, 84 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2022-12-13 12:57:48,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 95 transitions, 428 flow [2022-12-13 12:57:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2022-12-13 12:57:48,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2022-12-13 12:57:48,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2022-12-13 12:57:48,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2022-12-13 12:57:48,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:48,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2022-12-13 12:57:48,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 12:57:48,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 12:57:48,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 12:57:48,849 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 144 flow. Second operand 3 states and 552 transitions. [2022-12-13 12:57:48,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 95 transitions, 428 flow [2022-12-13 12:57:48,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:57:48,852 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 202 flow [2022-12-13 12:57:48,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2022-12-13 12:57:48,853 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2022-12-13 12:57:48,853 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 202 flow [2022-12-13 12:57:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 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 12:57:48,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:48,853 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:57:48,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:57:48,853 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 12:57:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash 909573931, now seen corresponding path program 1 times [2022-12-13 12:57:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:48,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361030603] [2022-12-13 12:57:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:48,888 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 12:57:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:48,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361030603] [2022-12-13 12:57:48,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361030603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:48,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:48,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:57:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544550900] [2022-12-13 12:57:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:48,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:48,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:48,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:48,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:48,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 329 [2022-12-13 12:57:48,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 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 12:57:48,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:48,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 329 [2022-12-13 12:57:48,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:49,477 INFO L130 PetriNetUnfolder]: 6056/10061 cut-off events. [2022-12-13 12:57:49,478 INFO L131 PetriNetUnfolder]: For 2127/2127 co-relation queries the response was YES. [2022-12-13 12:57:49,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23978 conditions, 10061 events. 6056/10061 cut-off events. For 2127/2127 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 66047 event pairs, 5437 based on Foata normal form. 0/8429 useless extension candidates. Maximal degree in co-relation 19915. Up to 9957 conditions per place. [2022-12-13 12:57:49,524 INFO L137 encePairwiseOnDemand]: 327/329 looper letters, 53 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-12-13 12:57:49,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 306 flow [2022-12-13 12:57:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:49,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-12-13 12:57:49,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5146909827760892 [2022-12-13 12:57:49,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-12-13 12:57:49,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-12-13 12:57:49,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:49,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-12-13 12:57:49,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 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 12:57:49,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 12:57:49,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 12:57:49,529 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 202 flow. Second operand 3 states and 508 transitions. [2022-12-13 12:57:49,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 306 flow [2022-12-13 12:57:49,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:57:49,537 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 188 flow [2022-12-13 12:57:49,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2022-12-13 12:57:49,538 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2022-12-13 12:57:49,538 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 188 flow [2022-12-13 12:57:49,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 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 12:57:49,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:49,539 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:57:49,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:57:49,539 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 12:57:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:49,539 INFO L85 PathProgramCache]: Analyzing trace with hash 909573971, now seen corresponding path program 1 times [2022-12-13 12:57:49,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:49,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375301239] [2022-12-13 12:57:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:49,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:49,569 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 12:57:49,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375301239] [2022-12-13 12:57:49,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375301239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:49,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:49,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:57:49,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451912202] [2022-12-13 12:57:49,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:49,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:49,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:49,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:49,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 329 [2022-12-13 12:57:49,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 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 12:57:49,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:49,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 329 [2022-12-13 12:57:49,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:50,258 INFO L130 PetriNetUnfolder]: 5676/9455 cut-off events. [2022-12-13 12:57:50,258 INFO L131 PetriNetUnfolder]: For 1463/1463 co-relation queries the response was YES. [2022-12-13 12:57:50,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21864 conditions, 9455 events. 5676/9455 cut-off events. For 1463/1463 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 64421 event pairs, 812 based on Foata normal form. 0/8094 useless extension candidates. Maximal degree in co-relation 21852. Up to 8355 conditions per place. [2022-12-13 12:57:50,293 INFO L137 encePairwiseOnDemand]: 325/329 looper letters, 80 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2022-12-13 12:57:50,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 89 transitions, 442 flow [2022-12-13 12:57:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:57:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:57:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2022-12-13 12:57:50,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5400202634245187 [2022-12-13 12:57:50,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2022-12-13 12:57:50,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2022-12-13 12:57:50,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:50,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2022-12-13 12:57:50,297 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 12:57:50,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 12:57:50,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 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 12:57:50,300 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 188 flow. Second operand 3 states and 533 transitions. [2022-12-13 12:57:50,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 89 transitions, 442 flow [2022-12-13 12:57:50,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:57:50,304 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 199 flow [2022-12-13 12:57:50,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2022-12-13 12:57:50,304 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2022-12-13 12:57:50,305 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 199 flow [2022-12-13 12:57:50,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 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 12:57:50,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:50,305 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:50,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:57:50,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:57:50,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:50,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1756404257, now seen corresponding path program 1 times [2022-12-13 12:57:50,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:50,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944222139] [2022-12-13 12:57:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:50,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:50,383 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 12:57:50,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:50,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944222139] [2022-12-13 12:57:50,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944222139] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:50,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:50,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:57:50,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393873500] [2022-12-13 12:57:50,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:50,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:57:50,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:50,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:57:50,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:57:50,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 329 [2022-12-13 12:57:50,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 12:57:50,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:50,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 329 [2022-12-13 12:57:50,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:51,287 INFO L130 PetriNetUnfolder]: 6562/10911 cut-off events. [2022-12-13 12:57:51,288 INFO L131 PetriNetUnfolder]: For 3165/3165 co-relation queries the response was YES. [2022-12-13 12:57:51,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26024 conditions, 10911 events. 6562/10911 cut-off events. For 3165/3165 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 73645 event pairs, 974 based on Foata normal form. 98/9655 useless extension candidates. Maximal degree in co-relation 26010. Up to 4914 conditions per place. [2022-12-13 12:57:51,319 INFO L137 encePairwiseOnDemand]: 313/329 looper letters, 186 selfloop transitions, 26 changer transitions 0/217 dead transitions. [2022-12-13 12:57:51,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 217 transitions, 1104 flow [2022-12-13 12:57:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:57:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:57:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1250 transitions. [2022-12-13 12:57:51,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5427702996092054 [2022-12-13 12:57:51,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1250 transitions. [2022-12-13 12:57:51,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1250 transitions. [2022-12-13 12:57:51,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:51,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1250 transitions. [2022-12-13 12:57:51,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 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 12:57:51,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 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 12:57:51,327 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 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 12:57:51,328 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 199 flow. Second operand 7 states and 1250 transitions. [2022-12-13 12:57:51,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 217 transitions, 1104 flow [2022-12-13 12:57:51,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 217 transitions, 1086 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:57:51,331 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 413 flow [2022-12-13 12:57:51,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=413, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2022-12-13 12:57:51,332 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2022-12-13 12:57:51,332 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 413 flow [2022-12-13 12:57:51,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 12:57:51,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:51,332 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:51,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:57:51,332 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:57:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:51,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1756404182, now seen corresponding path program 1 times [2022-12-13 12:57:51,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:51,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747562985] [2022-12-13 12:57:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:51,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:51,384 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 12:57:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:51,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747562985] [2022-12-13 12:57:51,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747562985] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:51,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:51,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:57:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978010648] [2022-12-13 12:57:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:51,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:57:51,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:57:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:57:51,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 329 [2022-12-13 12:57:51,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 413 flow. Second operand has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 12:57:51,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:51,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 329 [2022-12-13 12:57:51,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:57:52,468 INFO L130 PetriNetUnfolder]: 6247/10522 cut-off events. [2022-12-13 12:57:52,469 INFO L131 PetriNetUnfolder]: For 10271/10271 co-relation queries the response was YES. [2022-12-13 12:57:52,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30025 conditions, 10522 events. 6247/10522 cut-off events. For 10271/10271 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 71738 event pairs, 908 based on Foata normal form. 289/9889 useless extension candidates. Maximal degree in co-relation 30004. Up to 5004 conditions per place. [2022-12-13 12:57:52,497 INFO L137 encePairwiseOnDemand]: 313/329 looper letters, 189 selfloop transitions, 33 changer transitions 0/227 dead transitions. [2022-12-13 12:57:52,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 227 transitions, 1358 flow [2022-12-13 12:57:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:57:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:57:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1247 transitions. [2022-12-13 12:57:52,503 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5414676508901433 [2022-12-13 12:57:52,503 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1247 transitions. [2022-12-13 12:57:52,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1247 transitions. [2022-12-13 12:57:52,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:57:52,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1247 transitions. [2022-12-13 12:57:52,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 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 12:57:52,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 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 12:57:52,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 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 12:57:52,513 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 413 flow. Second operand 7 states and 1247 transitions. [2022-12-13 12:57:52,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 227 transitions, 1358 flow [2022-12-13 12:57:52,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 227 transitions, 1358 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:57:52,536 INFO L231 Difference]: Finished difference. Result has 83 places, 93 transitions, 663 flow [2022-12-13 12:57:52,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=663, PETRI_PLACES=83, PETRI_TRANSITIONS=93} [2022-12-13 12:57:52,537 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2022-12-13 12:57:52,537 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 93 transitions, 663 flow [2022-12-13 12:57:52,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 12:57:52,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:52,537 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 12:57:52,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:57:52,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 12:57:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2072714274, now seen corresponding path program 1 times [2022-12-13 12:57:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:52,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216292311] [2022-12-13 12:57:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:52,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:57:52,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:57:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:57:52,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:57:52,556 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:57:52,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 12:57:52,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 12:57:52,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 12:57:52,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 12:57:52,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 12:57:52,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 12:57:52,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 12:57:52,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:57:52,557 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:57:52,558 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:57:52,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 12:57:52,576 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 12:57:52,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 217 transitions, 464 flow [2022-12-13 12:57:52,619 INFO L130 PetriNetUnfolder]: 62/464 cut-off events. [2022-12-13 12:57:52,620 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 12:57:52,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 464 events. 62/464 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1577 event pairs, 1 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2022-12-13 12:57:52,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 217 transitions, 464 flow [2022-12-13 12:57:52,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 217 transitions, 464 flow [2022-12-13 12:57:52,624 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:57:52,624 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 217 transitions, 464 flow [2022-12-13 12:57:52,624 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 217 transitions, 464 flow [2022-12-13 12:57:52,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 217 transitions, 464 flow [2022-12-13 12:57:52,659 INFO L130 PetriNetUnfolder]: 62/464 cut-off events. [2022-12-13 12:57:52,659 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 12:57:52,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 464 events. 62/464 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1577 event pairs, 1 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2022-12-13 12:57:52,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 21816 [2022-12-13 12:57:55,394 INFO L134 LiptonReduction]: Checked pairs total: 59973 [2022-12-13 12:57:55,394 INFO L136 LiptonReduction]: Total number of compositions: 174 [2022-12-13 12:57:55,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:57:55,395 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;@2e2d4803, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:57:55,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 12:57:55,396 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 12:57:55,396 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:57:55,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:57:55,397 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:57:55,397 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 12:57:55,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:57:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1279839745, now seen corresponding path program 1 times [2022-12-13 12:57:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:57:55,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809108203] [2022-12-13 12:57:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:57:55,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:57:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:57:55,415 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 12:57:55,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:57:55,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809108203] [2022-12-13 12:57:55,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809108203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:57:55,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:57:55,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:57:55,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810985582] [2022-12-13 12:57:55,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:57:55,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:57:55,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:57:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:57:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:57:55,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 391 [2022-12-13 12:57:55,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 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 12:57:55,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:57:55,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 391 [2022-12-13 12:57:55,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:03,273 INFO L130 PetriNetUnfolder]: 109810/155105 cut-off events. [2022-12-13 12:58:03,273 INFO L131 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-12-13 12:58:03,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307988 conditions, 155105 events. 109810/155105 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 4869. Compared 1173885 event pairs, 69236 based on Foata normal form. 14516/121736 useless extension candidates. Maximal degree in co-relation 20296. Up to 151136 conditions per place. [2022-12-13 12:58:03,962 INFO L137 encePairwiseOnDemand]: 365/391 looper letters, 76 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2022-12-13 12:58:03,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 87 transitions, 360 flow [2022-12-13 12:58:03,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:58:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:58:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2022-12-13 12:58:03,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601023017902813 [2022-12-13 12:58:03,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2022-12-13 12:58:03,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2022-12-13 12:58:03,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:03,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2022-12-13 12:58:03,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 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 12:58:03,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 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 12:58:03,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 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 12:58:03,969 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 212 flow. Second operand 3 states and 657 transitions. [2022-12-13 12:58:03,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 87 transitions, 360 flow [2022-12-13 12:58:03,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:58:03,972 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 190 flow [2022-12-13 12:58:03,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2022-12-13 12:58:03,973 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2022-12-13 12:58:03,973 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 190 flow [2022-12-13 12:58:03,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 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 12:58:03,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:03,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:58:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:58:03,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:58:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1574306783, now seen corresponding path program 1 times [2022-12-13 12:58:03,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:03,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900197061] [2022-12-13 12:58:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:03,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:04,007 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 12:58:04,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:04,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900197061] [2022-12-13 12:58:04,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900197061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:04,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:04,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:58:04,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743235169] [2022-12-13 12:58:04,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:04,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:58:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:04,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:58:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:58:04,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 391 [2022-12-13 12:58:04,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 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 12:58:04,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:04,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 391 [2022-12-13 12:58:04,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:14,484 INFO L130 PetriNetUnfolder]: 132409/192596 cut-off events. [2022-12-13 12:58:14,484 INFO L131 PetriNetUnfolder]: For 8858/8858 co-relation queries the response was YES. [2022-12-13 12:58:14,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397855 conditions, 192596 events. 132409/192596 cut-off events. For 8858/8858 co-relation queries the response was YES. Maximal size of possible extension queue 6086. Compared 1575570 event pairs, 56105 based on Foata normal form. 1155/147310 useless extension candidates. Maximal degree in co-relation 397761. Up to 146616 conditions per place. [2022-12-13 12:58:15,242 INFO L137 encePairwiseOnDemand]: 371/391 looper letters, 104 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2022-12-13 12:58:15,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 546 flow [2022-12-13 12:58:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:58:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:58:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2022-12-13 12:58:15,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5643648763853367 [2022-12-13 12:58:15,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2022-12-13 12:58:15,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2022-12-13 12:58:15,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:15,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2022-12-13 12:58:15,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 12:58:15,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 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 12:58:15,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 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 12:58:15,249 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 190 flow. Second operand 3 states and 662 transitions. [2022-12-13 12:58:15,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 546 flow [2022-12-13 12:58:15,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 121 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:58:15,272 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 272 flow [2022-12-13 12:58:15,272 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2022-12-13 12:58:15,273 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2022-12-13 12:58:15,273 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 272 flow [2022-12-13 12:58:15,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 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 12:58:15,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:15,273 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:58:15,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:58:15,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:58:15,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1150574266, now seen corresponding path program 1 times [2022-12-13 12:58:15,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:15,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088135807] [2022-12-13 12:58:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:15,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:15,298 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 12:58:15,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:15,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088135807] [2022-12-13 12:58:15,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088135807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:15,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:15,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:58:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235540666] [2022-12-13 12:58:15,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:15,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:58:15,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:15,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:58:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:58:15,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 391 [2022-12-13 12:58:15,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 12:58:15,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:15,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 391 [2022-12-13 12:58:15,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:26,227 INFO L130 PetriNetUnfolder]: 124822/181854 cut-off events. [2022-12-13 12:58:26,227 INFO L131 PetriNetUnfolder]: For 44768/45137 co-relation queries the response was YES. [2022-12-13 12:58:26,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437206 conditions, 181854 events. 124822/181854 cut-off events. For 44768/45137 co-relation queries the response was YES. Maximal size of possible extension queue 5630. Compared 1473032 event pairs, 112227 based on Foata normal form. 0/152444 useless extension candidates. Maximal degree in co-relation 127493. Up to 178721 conditions per place. [2022-12-13 12:58:26,983 INFO L137 encePairwiseOnDemand]: 389/391 looper letters, 68 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2022-12-13 12:58:26,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 406 flow [2022-12-13 12:58:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:58:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:58:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2022-12-13 12:58:26,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5208866155157715 [2022-12-13 12:58:26,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2022-12-13 12:58:26,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2022-12-13 12:58:26,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:26,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2022-12-13 12:58:26,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 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 12:58:26,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 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 12:58:26,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 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 12:58:26,989 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 272 flow. Second operand 3 states and 611 transitions. [2022-12-13 12:58:26,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 406 flow [2022-12-13 12:58:28,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:58:28,861 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 254 flow [2022-12-13 12:58:28,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2022-12-13 12:58:28,862 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2022-12-13 12:58:28,862 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 254 flow [2022-12-13 12:58:28,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 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 12:58:28,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:28,863 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:58:28,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:58:28,863 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 12:58:28,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1150574320, now seen corresponding path program 1 times [2022-12-13 12:58:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:28,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759623000] [2022-12-13 12:58:28,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:28,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:28,889 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 12:58:28,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:28,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759623000] [2022-12-13 12:58:28,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759623000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:28,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:28,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:58:28,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116619071] [2022-12-13 12:58:28,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:28,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:58:28,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:28,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:58:28,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:58:28,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 391 [2022-12-13 12:58:28,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 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 12:58:28,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:28,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 391 [2022-12-13 12:58:28,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:38,255 INFO L130 PetriNetUnfolder]: 117235/170324 cut-off events. [2022-12-13 12:58:38,255 INFO L131 PetriNetUnfolder]: For 30754/30770 co-relation queries the response was YES. [2022-12-13 12:58:38,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399328 conditions, 170324 events. 117235/170324 cut-off events. For 30754/30770 co-relation queries the response was YES. Maximal size of possible extension queue 5262. Compared 1387800 event pairs, 23251 based on Foata normal form. 0/145104 useless extension candidates. Maximal degree in co-relation 399315. Up to 150145 conditions per place. [2022-12-13 12:58:38,933 INFO L137 encePairwiseOnDemand]: 387/391 looper letters, 107 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2022-12-13 12:58:38,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 120 transitions, 600 flow [2022-12-13 12:58:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:58:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:58:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2022-12-13 12:58:38,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5515771526001705 [2022-12-13 12:58:38,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2022-12-13 12:58:38,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2022-12-13 12:58:38,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:38,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2022-12-13 12:58:38,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 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 12:58:38,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 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 12:58:38,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 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 12:58:38,939 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 254 flow. Second operand 3 states and 647 transitions. [2022-12-13 12:58:38,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 120 transitions, 600 flow [2022-12-13 12:58:38,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 599 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:58:38,948 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 265 flow [2022-12-13 12:58:38,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2022-12-13 12:58:38,948 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2022-12-13 12:58:38,948 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 265 flow [2022-12-13 12:58:38,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 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 12:58:38,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:38,949 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:58:38,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:58:38,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:58:38,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:38,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1209027812, now seen corresponding path program 1 times [2022-12-13 12:58:38,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:38,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44668682] [2022-12-13 12:58:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:38,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:38,992 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 12:58:38,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:38,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44668682] [2022-12-13 12:58:38,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44668682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:38,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:38,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:58:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319149060] [2022-12-13 12:58:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:58:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:58:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:58:39,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 391 [2022-12-13 12:58:39,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 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 12:58:39,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:39,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 391 [2022-12-13 12:58:39,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:58:51,834 INFO L130 PetriNetUnfolder]: 160424/235075 cut-off events. [2022-12-13 12:58:51,835 INFO L131 PetriNetUnfolder]: For 63824/63924 co-relation queries the response was YES. [2022-12-13 12:58:52,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562223 conditions, 235075 events. 160424/235075 cut-off events. For 63824/63924 co-relation queries the response was YES. Maximal size of possible extension queue 7656. Compared 1982089 event pairs, 33730 based on Foata normal form. 91/206318 useless extension candidates. Maximal degree in co-relation 562208. Up to 109361 conditions per place. [2022-12-13 12:58:52,972 INFO L137 encePairwiseOnDemand]: 369/391 looper letters, 245 selfloop transitions, 41 changer transitions 0/295 dead transitions. [2022-12-13 12:58:52,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 295 transitions, 1528 flow [2022-12-13 12:58:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:58:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:58:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1522 transitions. [2022-12-13 12:58:52,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.556083302886372 [2022-12-13 12:58:52,980 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1522 transitions. [2022-12-13 12:58:52,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1522 transitions. [2022-12-13 12:58:52,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:58:52,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1522 transitions. [2022-12-13 12:58:52,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 217.42857142857142) internal successors, (1522), 7 states have internal predecessors, (1522), 0 states have call successors, (0), 0 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 12:58:52,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 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 12:58:52,996 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 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 12:58:52,996 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 265 flow. Second operand 7 states and 1522 transitions. [2022-12-13 12:58:52,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 295 transitions, 1528 flow [2022-12-13 12:58:53,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 295 transitions, 1510 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:58:53,033 INFO L231 Difference]: Finished difference. Result has 91 places, 111 transitions, 619 flow [2022-12-13 12:58:53,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=619, PETRI_PLACES=91, PETRI_TRANSITIONS=111} [2022-12-13 12:58:53,034 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2022-12-13 12:58:53,034 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 111 transitions, 619 flow [2022-12-13 12:58:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 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 12:58:53,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:58:53,035 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:58:53,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:58:53,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:58:53,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:58:53,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1209027897, now seen corresponding path program 1 times [2022-12-13 12:58:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:58:53,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784059898] [2022-12-13 12:58:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:58:53,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:58:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:58:53,084 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 12:58:53,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:58:53,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784059898] [2022-12-13 12:58:53,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784059898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:58:53,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:58:53,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:58:53,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102906913] [2022-12-13 12:58:53,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:58:53,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:58:53,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:58:53,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:58:53,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:58:53,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 391 [2022-12-13 12:58:53,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 111 transitions, 619 flow. Second operand has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 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 12:58:53,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:58:53,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 391 [2022-12-13 12:58:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:59:10,172 INFO L130 PetriNetUnfolder]: 162894/242252 cut-off events. [2022-12-13 12:59:10,172 INFO L131 PetriNetUnfolder]: For 297468/297675 co-relation queries the response was YES. [2022-12-13 12:59:10,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715734 conditions, 242252 events. 162894/242252 cut-off events. For 297468/297675 co-relation queries the response was YES. Maximal size of possible extension queue 8070. Compared 2107277 event pairs, 31313 based on Foata normal form. 9116/234033 useless extension candidates. Maximal degree in co-relation 715712. Up to 124930 conditions per place. [2022-12-13 12:59:11,503 INFO L137 encePairwiseOnDemand]: 369/391 looper letters, 265 selfloop transitions, 53 changer transitions 0/327 dead transitions. [2022-12-13 12:59:11,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 327 transitions, 2120 flow [2022-12-13 12:59:11,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:59:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:59:11,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1522 transitions. [2022-12-13 12:59:11,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.556083302886372 [2022-12-13 12:59:11,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1522 transitions. [2022-12-13 12:59:11,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1522 transitions. [2022-12-13 12:59:11,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:59:11,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1522 transitions. [2022-12-13 12:59:11,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 217.42857142857142) internal successors, (1522), 7 states have internal predecessors, (1522), 0 states have call successors, (0), 0 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 12:59:11,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 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 12:59:11,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 391.0) internal successors, (3128), 8 states have internal predecessors, (3128), 0 states have call successors, (0), 0 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 12:59:11,514 INFO L175 Difference]: Start difference. First operand has 91 places, 111 transitions, 619 flow. Second operand 7 states and 1522 transitions. [2022-12-13 12:59:11,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 327 transitions, 2120 flow [2022-12-13 12:59:13,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 327 transitions, 2120 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:59:13,867 INFO L231 Difference]: Finished difference. Result has 101 places, 144 transitions, 1163 flow [2022-12-13 12:59:13,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1163, PETRI_PLACES=101, PETRI_TRANSITIONS=144} [2022-12-13 12:59:13,867 INFO L288 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2022-12-13 12:59:13,867 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 144 transitions, 1163 flow [2022-12-13 12:59:13,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 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 12:59:13,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:13,868 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 12:59:13,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:59:13,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 12:59:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2134409971, now seen corresponding path program 1 times [2022-12-13 12:59:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:13,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516365858] [2022-12-13 12:59:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:13,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:59:13,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:59:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:59:13,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:59:13,885 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:59:13,885 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 12:59:13,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 12:59:13,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 12:59:13,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 12:59:13,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 12:59:13,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 12:59:13,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:59:13,887 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:59:13,887 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 12:59:13,887 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 12:59:13,906 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 12:59:13,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 255 transitions, 554 flow [2022-12-13 12:59:14,010 INFO L130 PetriNetUnfolder]: 96/708 cut-off events. [2022-12-13 12:59:14,011 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 12:59:14,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 708 events. 96/708 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2811 event pairs, 6 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 484. Up to 32 conditions per place. [2022-12-13 12:59:14,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 255 transitions, 554 flow [2022-12-13 12:59:14,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 255 transitions, 554 flow [2022-12-13 12:59:14,022 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:59:14,022 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 255 transitions, 554 flow [2022-12-13 12:59:14,022 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 255 transitions, 554 flow [2022-12-13 12:59:14,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 255 transitions, 554 flow [2022-12-13 12:59:14,100 INFO L130 PetriNetUnfolder]: 96/708 cut-off events. [2022-12-13 12:59:14,100 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 12:59:14,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 708 events. 96/708 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2811 event pairs, 6 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 484. Up to 32 conditions per place. [2022-12-13 12:59:14,114 INFO L119 LiptonReduction]: Number of co-enabled transitions 34704 [2022-12-13 12:59:16,781 INFO L134 LiptonReduction]: Checked pairs total: 103344 [2022-12-13 12:59:16,781 INFO L136 LiptonReduction]: Total number of compositions: 203 [2022-12-13 12:59:16,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:59:16,782 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;@2e2d4803, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:59:16,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 12:59:16,791 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 12:59:16,791 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:59:16,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:59:16,792 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:59:16,792 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 12:59:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:59:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1752964396, now seen corresponding path program 1 times [2022-12-13 12:59:16,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:59:16,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398114880] [2022-12-13 12:59:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:59:16,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:59:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:59:16,808 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 12:59:16,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:59:16,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398114880] [2022-12-13 12:59:16,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398114880] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:59:16,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:59:16,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:59:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440281450] [2022-12-13 12:59:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:59:16,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:59:16,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:59:16,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:59:16,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:59:16,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 458 [2022-12-13 12:59:16,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 114 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 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 12:59:16,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:59:16,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 458 [2022-12-13 12:59:16,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand