./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8 --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 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- 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-e04fb08 [2022-11-16 10:54:50,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:54:50,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:54:50,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:54:51,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:54:51,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:54:51,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:54:51,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:54:51,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:54:51,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:54:51,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:54:51,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:54:51,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:54:51,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:54:51,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:54:51,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:54:51,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:54:51,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:54:51,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:54:51,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:54:51,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:54:51,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:54:51,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:54:51,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:54:51,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:54:51,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:54:51,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:54:51,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:54:51,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:54:51,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:54:51,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:54:51,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:54:51,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:54:51,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:54:51,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:54:51,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:54:51,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:54:51,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:54:51,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:54:51,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:54:51,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:54:51,100 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 10:54:51,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:54:51,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:54:51,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:54:51,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:54:51,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:54:51,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:54:51,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:54:51,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:54:51,155 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:54:51,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:54:51,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:54:51,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:54:51,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:54:51,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:54:51,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:54:51,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:54:51,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:54:51,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:54:51,159 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 10:54:51,159 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:54:51,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:54:51,160 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:54:51,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:54:51,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:54:51,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:54:51,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:54:51,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:51,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:54:51,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:54:51,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:54:51,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:54:51,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:54:51,164 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:54:51,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:54:51,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:54:51,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2022-11-16 10:54:51,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:54:51,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:54:51,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:54:51,557 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:54:51,558 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:54:51,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-11-16 10:54:51,652 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/data/b2af21a7d/79215dfb7c704641af058c29b0363234/FLAG1cd3c6560 [2022-11-16 10:54:52,155 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:54:52,156 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-11-16 10:54:52,164 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/data/b2af21a7d/79215dfb7c704641af058c29b0363234/FLAG1cd3c6560 [2022-11-16 10:54:52,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/data/b2af21a7d/79215dfb7c704641af058c29b0363234 [2022-11-16 10:54:52,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:54:52,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:54:52,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:52,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:54:52,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:54:52,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:52,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554b30c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52, skipping insertion in model container [2022-11-16 10:54:52,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:52,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:54:52,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:54:52,858 WARN L229 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_5bffc6ef-c4cb-4425-8930-44f415464739/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-11-16 10:54:52,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:52,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:54:52,899 WARN L229 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_5bffc6ef-c4cb-4425-8930-44f415464739/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-11-16 10:54:52,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:52,920 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:54:52,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52 WrapperNode [2022-11-16 10:54:52,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:52,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:52,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:54:52,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:54:52,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:52,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:52,974 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 156 [2022-11-16 10:54:52,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:52,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:54:52,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:54:52,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:54:52,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:52,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:52,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:52,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:52,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:53,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:53,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:53,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:53,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:54:53,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:54:53,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:54:53,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:54:53,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (1/1) ... [2022-11-16 10:54:53,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:53,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:53,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:54:53,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:54:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:54:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 10:54:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 10:54:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 10:54:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 10:54:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:54:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:54:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:54:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:54:53,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:54:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:54:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:54:53,150 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 10:54:53,317 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:54:53,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:54:53,840 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:54:53,850 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:54:53,851 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 10:54:53,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:53 BoogieIcfgContainer [2022-11-16 10:54:53,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:54:53,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:54:53,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:54:53,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:54:53,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:54:52" (1/3) ... [2022-11-16 10:54:53,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32140361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:53, skipping insertion in model container [2022-11-16 10:54:53,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:52" (2/3) ... [2022-11-16 10:54:53,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32140361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:53, skipping insertion in model container [2022-11-16 10:54:53,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:53" (3/3) ... [2022-11-16 10:54:53,863 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2022-11-16 10:54:53,872 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:54:53,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:54:53,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 10:54:53,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:54:54,053 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 10:54:54,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 217 transitions, 450 flow [2022-11-16 10:54:54,267 INFO L130 PetriNetUnfolder]: 17/215 cut-off events. [2022-11-16 10:54:54,267 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 10:54:54,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 215 events. 17/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 464 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2022-11-16 10:54:54,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 217 transitions, 450 flow [2022-11-16 10:54:54,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 180 transitions, 369 flow [2022-11-16 10:54:54,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:54:54,330 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;@786f3819, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:54:54,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 10:54:54,373 INFO L130 PetriNetUnfolder]: 4/88 cut-off events. [2022-11-16 10:54:54,373 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 10:54:54,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:54,374 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:54,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:54,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:54,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1488778149, now seen corresponding path program 1 times [2022-11-16 10:54:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:54,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789079847] [2022-11-16 10:54:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:54,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:54,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789079847] [2022-11-16 10:54:54,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789079847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:54,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:54,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463103885] [2022-11-16 10:54:54,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:54,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:54,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:54,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:54,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-16 10:54:54,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 180 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:54,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:54,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-16 10:54:54,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:55,362 INFO L130 PetriNetUnfolder]: 116/708 cut-off events. [2022-11-16 10:54:55,362 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-16 10:54:55,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 708 events. 116/708 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4078 event pairs, 11 based on Foata normal form. 43/620 useless extension candidates. Maximal degree in co-relation 813. Up to 152 conditions per place. [2022-11-16 10:54:55,374 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 36 selfloop transitions, 5 changer transitions 0/184 dead transitions. [2022-11-16 10:54:55,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 184 transitions, 468 flow [2022-11-16 10:54:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1100 transitions. [2022-11-16 10:54:55,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8448540706605223 [2022-11-16 10:54:55,393 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1100 transitions. [2022-11-16 10:54:55,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1100 transitions. [2022-11-16 10:54:55,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:55,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1100 transitions. [2022-11-16 10:54:55,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,426 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,428 INFO L175 Difference]: Start difference. First operand has 173 places, 180 transitions, 369 flow. Second operand 6 states and 1100 transitions. [2022-11-16 10:54:55,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 184 transitions, 468 flow [2022-11-16 10:54:55,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 184 transitions, 459 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:54:55,438 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 364 flow [2022-11-16 10:54:55,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=364, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2022-11-16 10:54:55,444 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 1 predicate places. [2022-11-16 10:54:55,444 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 364 flow [2022-11-16 10:54:55,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:55,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:55,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:54:55,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:55,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1092518201, now seen corresponding path program 1 times [2022-11-16 10:54:55,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:55,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144915768] [2022-11-16 10:54:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:55,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:55,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:55,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144915768] [2022-11-16 10:54:55,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144915768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:55,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:55,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351701729] [2022-11-16 10:54:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:55,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:55,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:55,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:55,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:55,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 217 [2022-11-16 10:54:55,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:55,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 217 [2022-11-16 10:54:55,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:55,758 INFO L130 PetriNetUnfolder]: 49/479 cut-off events. [2022-11-16 10:54:55,759 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 10:54:55,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 479 events. 49/479 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2550 event pairs, 12 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 417. Up to 43 conditions per place. [2022-11-16 10:54:55,764 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 32 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2022-11-16 10:54:55,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 186 transitions, 463 flow [2022-11-16 10:54:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 766 transitions. [2022-11-16 10:54:55,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8824884792626728 [2022-11-16 10:54:55,768 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 766 transitions. [2022-11-16 10:54:55,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 766 transitions. [2022-11-16 10:54:55,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:55,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 766 transitions. [2022-11-16 10:54:55,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.5) internal successors, (766), 4 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,776 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,776 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 364 flow. Second operand 4 states and 766 transitions. [2022-11-16 10:54:55,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 186 transitions, 463 flow [2022-11-16 10:54:55,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 186 transitions, 454 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:55,784 INFO L231 Difference]: Finished difference. Result has 175 places, 176 transitions, 379 flow [2022-11-16 10:54:55,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=175, PETRI_TRANSITIONS=176} [2022-11-16 10:54:55,786 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 2 predicate places. [2022-11-16 10:54:55,786 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 176 transitions, 379 flow [2022-11-16 10:54:55,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:55,788 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:55,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:54:55,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash 765085087, now seen corresponding path program 1 times [2022-11-16 10:54:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:55,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171766944] [2022-11-16 10:54:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:55,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:55,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:55,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171766944] [2022-11-16 10:54:55,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171766944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:55,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:55,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:55,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620129357] [2022-11-16 10:54:55,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:55,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:55,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:55,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:55,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:55,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-16 10:54:55,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 176 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:55,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-16 10:54:55,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:56,215 INFO L130 PetriNetUnfolder]: 153/903 cut-off events. [2022-11-16 10:54:56,215 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-16 10:54:56,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 903 events. 153/903 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5753 event pairs, 18 based on Foata normal form. 0/730 useless extension candidates. Maximal degree in co-relation 1029. Up to 209 conditions per place. [2022-11-16 10:54:56,222 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 35 selfloop transitions, 5 changer transitions 0/183 dead transitions. [2022-11-16 10:54:56,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 183 transitions, 475 flow [2022-11-16 10:54:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:56,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1091 transitions. [2022-11-16 10:54:56,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8379416282642089 [2022-11-16 10:54:56,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1091 transitions. [2022-11-16 10:54:56,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1091 transitions. [2022-11-16 10:54:56,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:56,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1091 transitions. [2022-11-16 10:54:56,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,235 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,235 INFO L175 Difference]: Start difference. First operand has 175 places, 176 transitions, 379 flow. Second operand 6 states and 1091 transitions. [2022-11-16 10:54:56,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 183 transitions, 475 flow [2022-11-16 10:54:56,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 183 transitions, 475 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:54:56,242 INFO L231 Difference]: Finished difference. Result has 179 places, 175 transitions, 387 flow [2022-11-16 10:54:56,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=179, PETRI_TRANSITIONS=175} [2022-11-16 10:54:56,245 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 6 predicate places. [2022-11-16 10:54:56,245 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 175 transitions, 387 flow [2022-11-16 10:54:56,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:56,247 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:56,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 10:54:56,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2052165448, now seen corresponding path program 1 times [2022-11-16 10:54:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:56,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64777490] [2022-11-16 10:54:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:56,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:56,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64777490] [2022-11-16 10:54:56,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64777490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:56,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:56,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067844968] [2022-11-16 10:54:56,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:56,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:56,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:56,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:56,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:56,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 217 [2022-11-16 10:54:56,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 175 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:56,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 217 [2022-11-16 10:54:56,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:56,577 INFO L130 PetriNetUnfolder]: 98/626 cut-off events. [2022-11-16 10:54:56,578 INFO L131 PetriNetUnfolder]: For 94/96 co-relation queries the response was YES. [2022-11-16 10:54:56,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 626 events. 98/626 cut-off events. For 94/96 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4316 event pairs, 36 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 810. Up to 95 conditions per place. [2022-11-16 10:54:56,583 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 31 selfloop transitions, 4 changer transitions 0/185 dead transitions. [2022-11-16 10:54:56,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 185 transitions, 479 flow [2022-11-16 10:54:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 765 transitions. [2022-11-16 10:54:56,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.881336405529954 [2022-11-16 10:54:56,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 765 transitions. [2022-11-16 10:54:56,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 765 transitions. [2022-11-16 10:54:56,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:56,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 765 transitions. [2022-11-16 10:54:56,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,597 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,597 INFO L175 Difference]: Start difference. First operand has 179 places, 175 transitions, 387 flow. Second operand 4 states and 765 transitions. [2022-11-16 10:54:56,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 185 transitions, 479 flow [2022-11-16 10:54:56,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 185 transitions, 470 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:56,602 INFO L231 Difference]: Finished difference. Result has 180 places, 176 transitions, 402 flow [2022-11-16 10:54:56,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=180, PETRI_TRANSITIONS=176} [2022-11-16 10:54:56,604 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 7 predicate places. [2022-11-16 10:54:56,604 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 176 transitions, 402 flow [2022-11-16 10:54:56,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:56,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:56,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 10:54:56,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1973396384, now seen corresponding path program 1 times [2022-11-16 10:54:56,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:56,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514697659] [2022-11-16 10:54:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:56,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:56,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514697659] [2022-11-16 10:54:56,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514697659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:56,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:56,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:56,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612684579] [2022-11-16 10:54:56,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:56,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:56,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:56,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 217 [2022-11-16 10:54:56,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 176 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:56,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 217 [2022-11-16 10:54:56,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:56,886 INFO L130 PetriNetUnfolder]: 44/612 cut-off events. [2022-11-16 10:54:56,886 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-16 10:54:56,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 612 events. 44/612 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3541 event pairs, 12 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 656. Up to 41 conditions per place. [2022-11-16 10:54:56,892 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 32 selfloop transitions, 3 changer transitions 0/185 dead transitions. [2022-11-16 10:54:56,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 185 transitions, 491 flow [2022-11-16 10:54:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 764 transitions. [2022-11-16 10:54:56,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.880184331797235 [2022-11-16 10:54:56,895 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 764 transitions. [2022-11-16 10:54:56,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 764 transitions. [2022-11-16 10:54:56,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:56,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 764 transitions. [2022-11-16 10:54:56,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,900 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,900 INFO L175 Difference]: Start difference. First operand has 180 places, 176 transitions, 402 flow. Second operand 4 states and 764 transitions. [2022-11-16 10:54:56,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 185 transitions, 491 flow [2022-11-16 10:54:56,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 185 transitions, 489 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:56,906 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 400 flow [2022-11-16 10:54:56,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2022-11-16 10:54:56,909 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 9 predicate places. [2022-11-16 10:54:56,909 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 400 flow [2022-11-16 10:54:56,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:56,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:56,910 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:56,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:54:56,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:56,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1045746341, now seen corresponding path program 1 times [2022-11-16 10:54:56,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:56,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425483968] [2022-11-16 10:54:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:56,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:57,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425483968] [2022-11-16 10:54:57,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425483968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:57,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:57,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053989984] [2022-11-16 10:54:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:57,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:57,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:57,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-16 10:54:57,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:57,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-16 10:54:57,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:57,335 INFO L130 PetriNetUnfolder]: 130/1098 cut-off events. [2022-11-16 10:54:57,335 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-16 10:54:57,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 1098 events. 130/1098 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7598 event pairs, 11 based on Foata normal form. 0/952 useless extension candidates. Maximal degree in co-relation 1293. Up to 199 conditions per place. [2022-11-16 10:54:57,344 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 34 selfloop transitions, 5 changer transitions 0/183 dead transitions. [2022-11-16 10:54:57,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 183 transitions, 499 flow [2022-11-16 10:54:57,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1090 transitions. [2022-11-16 10:54:57,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.837173579109063 [2022-11-16 10:54:57,347 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1090 transitions. [2022-11-16 10:54:57,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1090 transitions. [2022-11-16 10:54:57,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:57,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1090 transitions. [2022-11-16 10:54:57,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.66666666666666) internal successors, (1090), 6 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,355 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,355 INFO L175 Difference]: Start difference. First operand has 182 places, 175 transitions, 400 flow. Second operand 6 states and 1090 transitions. [2022-11-16 10:54:57,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 183 transitions, 499 flow [2022-11-16 10:54:57,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 183 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:57,361 INFO L231 Difference]: Finished difference. Result has 184 places, 174 transitions, 403 flow [2022-11-16 10:54:57,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=184, PETRI_TRANSITIONS=174} [2022-11-16 10:54:57,364 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 11 predicate places. [2022-11-16 10:54:57,365 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 174 transitions, 403 flow [2022-11-16 10:54:57,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:57,366 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:57,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:54:57,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:57,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash 815233320, now seen corresponding path program 1 times [2022-11-16 10:54:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:57,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311413194] [2022-11-16 10:54:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:57,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:57,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:57,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311413194] [2022-11-16 10:54:57,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311413194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:57,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:57,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759986914] [2022-11-16 10:54:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:57,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:57,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:57,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:57,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:57,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 217 [2022-11-16 10:54:57,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 174 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:57,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 217 [2022-11-16 10:54:57,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:57,641 INFO L130 PetriNetUnfolder]: 50/671 cut-off events. [2022-11-16 10:54:57,641 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 10:54:57,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 671 events. 50/671 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4122 event pairs, 18 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 758. Up to 60 conditions per place. [2022-11-16 10:54:57,646 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 29 selfloop transitions, 3 changer transitions 0/183 dead transitions. [2022-11-16 10:54:57,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 183 transitions, 488 flow [2022-11-16 10:54:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 761 transitions. [2022-11-16 10:54:57,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8767281105990783 [2022-11-16 10:54:57,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 761 transitions. [2022-11-16 10:54:57,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 761 transitions. [2022-11-16 10:54:57,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:57,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 761 transitions. [2022-11-16 10:54:57,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,656 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,656 INFO L175 Difference]: Start difference. First operand has 184 places, 174 transitions, 403 flow. Second operand 4 states and 761 transitions. [2022-11-16 10:54:57,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 183 transitions, 488 flow [2022-11-16 10:54:57,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 183 transitions, 477 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:57,661 INFO L231 Difference]: Finished difference. Result has 182 places, 174 transitions, 401 flow [2022-11-16 10:54:57,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=401, PETRI_PLACES=182, PETRI_TRANSITIONS=174} [2022-11-16 10:54:57,662 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 9 predicate places. [2022-11-16 10:54:57,662 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 174 transitions, 401 flow [2022-11-16 10:54:57,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:57,663 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:57,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 10:54:57,663 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:57,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:57,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1424476769, now seen corresponding path program 1 times [2022-11-16 10:54:57,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:57,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415202194] [2022-11-16 10:54:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:57,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:57,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:57,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415202194] [2022-11-16 10:54:57,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415202194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:57,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:57,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724599846] [2022-11-16 10:54:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:57,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:57,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:57,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 217 [2022-11-16 10:54:57,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 174 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:57,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 217 [2022-11-16 10:54:57,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:57,959 INFO L130 PetriNetUnfolder]: 121/764 cut-off events. [2022-11-16 10:54:57,960 INFO L131 PetriNetUnfolder]: For 170/173 co-relation queries the response was YES. [2022-11-16 10:54:57,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 764 events. 121/764 cut-off events. For 170/173 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5674 event pairs, 48 based on Foata normal form. 5/619 useless extension candidates. Maximal degree in co-relation 1055. Up to 116 conditions per place. [2022-11-16 10:54:57,966 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 31 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2022-11-16 10:54:57,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 182 transitions, 483 flow [2022-11-16 10:54:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 763 transitions. [2022-11-16 10:54:57,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2022-11-16 10:54:57,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 763 transitions. [2022-11-16 10:54:57,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 763 transitions. [2022-11-16 10:54:57,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:57,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 763 transitions. [2022-11-16 10:54:57,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,978 INFO L175 Difference]: Start difference. First operand has 182 places, 174 transitions, 401 flow. Second operand 4 states and 763 transitions. [2022-11-16 10:54:57,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 182 transitions, 483 flow [2022-11-16 10:54:57,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 182 transitions, 479 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:57,982 INFO L231 Difference]: Finished difference. Result has 183 places, 173 transitions, 397 flow [2022-11-16 10:54:57,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=397, PETRI_PLACES=183, PETRI_TRANSITIONS=173} [2022-11-16 10:54:57,985 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 10 predicate places. [2022-11-16 10:54:57,985 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 173 transitions, 397 flow [2022-11-16 10:54:57,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:57,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:57,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:57,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 10:54:57,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1490920906, now seen corresponding path program 1 times [2022-11-16 10:54:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:57,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295672976] [2022-11-16 10:54:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:57,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:58,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:58,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295672976] [2022-11-16 10:54:58,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295672976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:58,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:58,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:58,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199536312] [2022-11-16 10:54:58,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:58,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:58,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 217 [2022-11-16 10:54:58,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 173 transitions, 397 flow. Second operand has 8 states, 8 states have (on average 172.125) internal successors, (1377), 8 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:58,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 217 [2022-11-16 10:54:58,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:58,641 INFO L130 PetriNetUnfolder]: 186/1494 cut-off events. [2022-11-16 10:54:58,641 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 10:54:58,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 1494 events. 186/1494 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 11770 event pairs, 15 based on Foata normal form. 0/1310 useless extension candidates. Maximal degree in co-relation 1803. Up to 183 conditions per place. [2022-11-16 10:54:58,650 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 45 selfloop transitions, 9 changer transitions 0/192 dead transitions. [2022-11-16 10:54:58,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 192 transitions, 552 flow [2022-11-16 10:54:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1415 transitions. [2022-11-16 10:54:58,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8150921658986175 [2022-11-16 10:54:58,654 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1415 transitions. [2022-11-16 10:54:58,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1415 transitions. [2022-11-16 10:54:58,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:58,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1415 transitions. [2022-11-16 10:54:58,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 176.875) internal successors, (1415), 8 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,663 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,664 INFO L175 Difference]: Start difference. First operand has 183 places, 173 transitions, 397 flow. Second operand 8 states and 1415 transitions. [2022-11-16 10:54:58,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 192 transitions, 552 flow [2022-11-16 10:54:58,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 192 transitions, 547 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:58,669 INFO L231 Difference]: Finished difference. Result has 190 places, 174 transitions, 422 flow [2022-11-16 10:54:58,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=422, PETRI_PLACES=190, PETRI_TRANSITIONS=174} [2022-11-16 10:54:58,670 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 17 predicate places. [2022-11-16 10:54:58,670 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 174 transitions, 422 flow [2022-11-16 10:54:58,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 172.125) internal successors, (1377), 8 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:58,671 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:58,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 10:54:58,672 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:58,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:58,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1209106231, now seen corresponding path program 1 times [2022-11-16 10:54:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:58,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696208066] [2022-11-16 10:54:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:58,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:58,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696208066] [2022-11-16 10:54:58,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696208066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:58,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:58,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:58,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626867170] [2022-11-16 10:54:58,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:58,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:58,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-16 10:54:58,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 174 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:58,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:58,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-16 10:54:58,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:59,081 INFO L130 PetriNetUnfolder]: 199/1352 cut-off events. [2022-11-16 10:54:59,081 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2022-11-16 10:54:59,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 1352 events. 199/1352 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 10020 event pairs, 17 based on Foata normal form. 0/1128 useless extension candidates. Maximal degree in co-relation 1689. Up to 308 conditions per place. [2022-11-16 10:54:59,090 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 33 selfloop transitions, 5 changer transitions 0/181 dead transitions. [2022-11-16 10:54:59,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 181 transitions, 518 flow [2022-11-16 10:54:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1089 transitions. [2022-11-16 10:54:59,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836405529953917 [2022-11-16 10:54:59,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1089 transitions. [2022-11-16 10:54:59,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1089 transitions. [2022-11-16 10:54:59,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:59,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1089 transitions. [2022-11-16 10:54:59,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.5) internal successors, (1089), 6 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,101 INFO L175 Difference]: Start difference. First operand has 190 places, 174 transitions, 422 flow. Second operand 6 states and 1089 transitions. [2022-11-16 10:54:59,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 181 transitions, 518 flow [2022-11-16 10:54:59,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 181 transitions, 505 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:59,105 INFO L231 Difference]: Finished difference. Result has 190 places, 173 transitions, 421 flow [2022-11-16 10:54:59,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=190, PETRI_TRANSITIONS=173} [2022-11-16 10:54:59,107 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 17 predicate places. [2022-11-16 10:54:59,107 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 173 transitions, 421 flow [2022-11-16 10:54:59,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:59,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:59,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 10:54:59,108 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1026091577, now seen corresponding path program 1 times [2022-11-16 10:54:59,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:59,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685863010] [2022-11-16 10:54:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:59,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:59,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685863010] [2022-11-16 10:54:59,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685863010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:59,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:59,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:59,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020903340] [2022-11-16 10:54:59,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:59,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:59,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:59,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:59,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:59,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 217 [2022-11-16 10:54:59,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 173 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 172.25) internal successors, (1378), 8 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:59,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 217 [2022-11-16 10:54:59,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:59,656 INFO L130 PetriNetUnfolder]: 162/1454 cut-off events. [2022-11-16 10:54:59,657 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2022-11-16 10:54:59,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 1454 events. 162/1454 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11332 event pairs, 15 based on Foata normal form. 0/1298 useless extension candidates. Maximal degree in co-relation 1808. Up to 165 conditions per place. [2022-11-16 10:54:59,666 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 48 selfloop transitions, 9 changer transitions 0/194 dead transitions. [2022-11-16 10:54:59,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 194 transitions, 601 flow [2022-11-16 10:54:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1417 transitions. [2022-11-16 10:54:59,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8162442396313364 [2022-11-16 10:54:59,670 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1417 transitions. [2022-11-16 10:54:59,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1417 transitions. [2022-11-16 10:54:59,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:59,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1417 transitions. [2022-11-16 10:54:59,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.125) internal successors, (1417), 8 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,679 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,679 INFO L175 Difference]: Start difference. First operand has 190 places, 173 transitions, 421 flow. Second operand 8 states and 1417 transitions. [2022-11-16 10:54:59,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 194 transitions, 601 flow [2022-11-16 10:54:59,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 194 transitions, 584 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:59,685 INFO L231 Difference]: Finished difference. Result has 195 places, 174 transitions, 442 flow [2022-11-16 10:54:59,686 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=442, PETRI_PLACES=195, PETRI_TRANSITIONS=174} [2022-11-16 10:54:59,686 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 22 predicate places. [2022-11-16 10:54:59,687 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 174 transitions, 442 flow [2022-11-16 10:54:59,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 172.25) internal successors, (1378), 8 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:59,688 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:59,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 10:54:59,688 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:54:59,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:59,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1434569044, now seen corresponding path program 1 times [2022-11-16 10:54:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:59,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188459025] [2022-11-16 10:54:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:59,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:59,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188459025] [2022-11-16 10:54:59,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188459025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:59,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:59,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540153433] [2022-11-16 10:54:59,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:54:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:54:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:54:59,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 217 [2022-11-16 10:54:59,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 174 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:59,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 217 [2022-11-16 10:54:59,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:00,031 INFO L130 PetriNetUnfolder]: 149/813 cut-off events. [2022-11-16 10:55:00,032 INFO L131 PetriNetUnfolder]: For 178/181 co-relation queries the response was YES. [2022-11-16 10:55:00,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 813 events. 149/813 cut-off events. For 178/181 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6288 event pairs, 60 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1189. Up to 147 conditions per place. [2022-11-16 10:55:00,039 INFO L137 encePairwiseOnDemand]: 210/217 looper letters, 36 selfloop transitions, 7 changer transitions 0/189 dead transitions. [2022-11-16 10:55:00,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 189 transitions, 560 flow [2022-11-16 10:55:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:55:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:55:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1112 transitions. [2022-11-16 10:55:00,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8540706605222734 [2022-11-16 10:55:00,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1112 transitions. [2022-11-16 10:55:00,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1112 transitions. [2022-11-16 10:55:00,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:00,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1112 transitions. [2022-11-16 10:55:00,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.33333333333334) internal successors, (1112), 6 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,051 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,051 INFO L175 Difference]: Start difference. First operand has 195 places, 174 transitions, 442 flow. Second operand 6 states and 1112 transitions. [2022-11-16 10:55:00,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 189 transitions, 560 flow [2022-11-16 10:55:00,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 189 transitions, 546 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 10:55:00,057 INFO L231 Difference]: Finished difference. Result has 196 places, 177 transitions, 463 flow [2022-11-16 10:55:00,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=196, PETRI_TRANSITIONS=177} [2022-11-16 10:55:00,058 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 23 predicate places. [2022-11-16 10:55:00,058 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 177 transitions, 463 flow [2022-11-16 10:55:00,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,059 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:00,059 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:00,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 10:55:00,059 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:55:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:00,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1541439019, now seen corresponding path program 1 times [2022-11-16 10:55:00,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:00,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522522463] [2022-11-16 10:55:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:00,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:00,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522522463] [2022-11-16 10:55:00,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522522463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:00,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:00,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269447124] [2022-11-16 10:55:00,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:00,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:00,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:00,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:55:00,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 217 [2022-11-16 10:55:00,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 177 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:00,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 217 [2022-11-16 10:55:00,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:00,484 INFO L130 PetriNetUnfolder]: 62/575 cut-off events. [2022-11-16 10:55:00,484 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-11-16 10:55:00,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 575 events. 62/575 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3412 event pairs, 29 based on Foata normal form. 2/540 useless extension candidates. Maximal degree in co-relation 886. Up to 91 conditions per place. [2022-11-16 10:55:00,490 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 38 selfloop transitions, 7 changer transitions 0/187 dead transitions. [2022-11-16 10:55:00,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 187 transitions, 582 flow [2022-11-16 10:55:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:55:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:55:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1249 transitions. [2022-11-16 10:55:00,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8222514812376563 [2022-11-16 10:55:00,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1249 transitions. [2022-11-16 10:55:00,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1249 transitions. [2022-11-16 10:55:00,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:00,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1249 transitions. [2022-11-16 10:55:00,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.42857142857142) internal successors, (1249), 7 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,503 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,503 INFO L175 Difference]: Start difference. First operand has 196 places, 177 transitions, 463 flow. Second operand 7 states and 1249 transitions. [2022-11-16 10:55:00,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 187 transitions, 582 flow [2022-11-16 10:55:00,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 187 transitions, 577 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:55:00,509 INFO L231 Difference]: Finished difference. Result has 203 places, 180 transitions, 494 flow [2022-11-16 10:55:00,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=203, PETRI_TRANSITIONS=180} [2022-11-16 10:55:00,510 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 30 predicate places. [2022-11-16 10:55:00,511 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 180 transitions, 494 flow [2022-11-16 10:55:00,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:00,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:00,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 10:55:00,512 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:55:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1267000143, now seen corresponding path program 1 times [2022-11-16 10:55:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:00,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817899979] [2022-11-16 10:55:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:00,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:00,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817899979] [2022-11-16 10:55:00,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817899979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:00,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:00,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:00,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249368510] [2022-11-16 10:55:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:00,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:00,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:55:00,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 217 [2022-11-16 10:55:00,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 180 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:00,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 217 [2022-11-16 10:55:00,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:00,926 INFO L130 PetriNetUnfolder]: 58/569 cut-off events. [2022-11-16 10:55:00,926 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2022-11-16 10:55:00,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 569 events. 58/569 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3348 event pairs, 24 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 914. Up to 76 conditions per place. [2022-11-16 10:55:00,932 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 47 selfloop transitions, 8 changer transitions 0/197 dead transitions. [2022-11-16 10:55:00,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 197 transitions, 669 flow [2022-11-16 10:55:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:55:00,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:55:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1255 transitions. [2022-11-16 10:55:00,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.826201448321264 [2022-11-16 10:55:00,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1255 transitions. [2022-11-16 10:55:00,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1255 transitions. [2022-11-16 10:55:00,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:00,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1255 transitions. [2022-11-16 10:55:00,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.28571428571428) internal successors, (1255), 7 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,944 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,944 INFO L175 Difference]: Start difference. First operand has 203 places, 180 transitions, 494 flow. Second operand 7 states and 1255 transitions. [2022-11-16 10:55:00,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 197 transitions, 669 flow [2022-11-16 10:55:00,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 197 transitions, 667 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:55:00,950 INFO L231 Difference]: Finished difference. Result has 211 places, 184 transitions, 541 flow [2022-11-16 10:55:00,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=211, PETRI_TRANSITIONS=184} [2022-11-16 10:55:00,951 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 38 predicate places. [2022-11-16 10:55:00,951 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 184 transitions, 541 flow [2022-11-16 10:55:00,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:00,952 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:00,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 10:55:00,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:55:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash -561939954, now seen corresponding path program 1 times [2022-11-16 10:55:00,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:00,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806325660] [2022-11-16 10:55:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:00,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:01,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:01,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806325660] [2022-11-16 10:55:01,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806325660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:01,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:01,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:55:01,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578538127] [2022-11-16 10:55:01,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:01,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:55:01,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:55:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:55:01,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 217 [2022-11-16 10:55:01,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 184 transitions, 541 flow. Second operand has 8 states, 8 states have (on average 172.25) internal successors, (1378), 8 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:01,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 217 [2022-11-16 10:55:01,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:01,558 INFO L130 PetriNetUnfolder]: 262/1455 cut-off events. [2022-11-16 10:55:01,558 INFO L131 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2022-11-16 10:55:01,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2364 conditions, 1455 events. 262/1455 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11268 event pairs, 17 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 2062. Up to 218 conditions per place. [2022-11-16 10:55:01,572 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 45 selfloop transitions, 11 changer transitions 0/202 dead transitions. [2022-11-16 10:55:01,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 202 transitions, 693 flow [2022-11-16 10:55:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:55:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:55:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1414 transitions. [2022-11-16 10:55:01,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8145161290322581 [2022-11-16 10:55:01,577 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1414 transitions. [2022-11-16 10:55:01,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1414 transitions. [2022-11-16 10:55:01,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:01,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1414 transitions. [2022-11-16 10:55:01,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 176.75) internal successors, (1414), 8 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,587 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,587 INFO L175 Difference]: Start difference. First operand has 211 places, 184 transitions, 541 flow. Second operand 8 states and 1414 transitions. [2022-11-16 10:55:01,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 202 transitions, 693 flow [2022-11-16 10:55:01,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 202 transitions, 693 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:55:01,594 INFO L231 Difference]: Finished difference. Result has 220 places, 185 transitions, 577 flow [2022-11-16 10:55:01,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=220, PETRI_TRANSITIONS=185} [2022-11-16 10:55:01,595 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 47 predicate places. [2022-11-16 10:55:01,596 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 185 transitions, 577 flow [2022-11-16 10:55:01,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 172.25) internal successors, (1378), 8 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:01,597 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:01,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 10:55:01,597 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:55:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash -240268730, now seen corresponding path program 1 times [2022-11-16 10:55:01,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:01,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664116676] [2022-11-16 10:55:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:01,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:01,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:01,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664116676] [2022-11-16 10:55:01,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664116676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:01,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:01,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:55:01,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544328348] [2022-11-16 10:55:01,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:01,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:55:01,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:55:01,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:55:01,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 217 [2022-11-16 10:55:01,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 185 transitions, 577 flow. Second operand has 8 states, 8 states have (on average 172.375) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:01,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 217 [2022-11-16 10:55:01,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:02,143 INFO L130 PetriNetUnfolder]: 234/1423 cut-off events. [2022-11-16 10:55:02,144 INFO L131 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2022-11-16 10:55:02,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 1423 events. 234/1423 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10724 event pairs, 21 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 2082. Up to 203 conditions per place. [2022-11-16 10:55:02,157 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 47 selfloop transitions, 9 changer transitions 0/204 dead transitions. [2022-11-16 10:55:02,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 204 transitions, 733 flow [2022-11-16 10:55:02,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:55:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:55:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1416 transitions. [2022-11-16 10:55:02,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815668202764977 [2022-11-16 10:55:02,161 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1416 transitions. [2022-11-16 10:55:02,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1416 transitions. [2022-11-16 10:55:02,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:02,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1416 transitions. [2022-11-16 10:55:02,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,170 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,170 INFO L175 Difference]: Start difference. First operand has 220 places, 185 transitions, 577 flow. Second operand 8 states and 1416 transitions. [2022-11-16 10:55:02,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 204 transitions, 733 flow [2022-11-16 10:55:02,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 204 transitions, 724 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:55:02,178 INFO L231 Difference]: Finished difference. Result has 225 places, 186 transitions, 598 flow [2022-11-16 10:55:02,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=598, PETRI_PLACES=225, PETRI_TRANSITIONS=186} [2022-11-16 10:55:02,179 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 52 predicate places. [2022-11-16 10:55:02,179 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 186 transitions, 598 flow [2022-11-16 10:55:02,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 172.375) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:02,180 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:02,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 10:55:02,181 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:55:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:02,181 INFO L85 PathProgramCache]: Analyzing trace with hash 802953034, now seen corresponding path program 1 times [2022-11-16 10:55:02,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:02,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633344364] [2022-11-16 10:55:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:02,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:02,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:02,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633344364] [2022-11-16 10:55:02,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633344364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:02,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:02,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:02,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354540593] [2022-11-16 10:55:02,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:02,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:02,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:55:02,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 217 [2022-11-16 10:55:02,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 186 transitions, 598 flow. Second operand has 6 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:02,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 217 [2022-11-16 10:55:02,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:02,578 INFO L130 PetriNetUnfolder]: 209/860 cut-off events. [2022-11-16 10:55:02,578 INFO L131 PetriNetUnfolder]: For 405/408 co-relation queries the response was YES. [2022-11-16 10:55:02,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 860 events. 209/860 cut-off events. For 405/408 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 7339 event pairs, 116 based on Foata normal form. 5/699 useless extension candidates. Maximal degree in co-relation 1586. Up to 268 conditions per place. [2022-11-16 10:55:02,585 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 36 selfloop transitions, 7 changer transitions 4/195 dead transitions. [2022-11-16 10:55:02,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 195 transitions, 713 flow [2022-11-16 10:55:02,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:55:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:55:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1248 transitions. [2022-11-16 10:55:02,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8215931533903884 [2022-11-16 10:55:02,589 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1248 transitions. [2022-11-16 10:55:02,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1248 transitions. [2022-11-16 10:55:02,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:02,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1248 transitions. [2022-11-16 10:55:02,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.28571428571428) internal successors, (1248), 7 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,596 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,596 INFO L175 Difference]: Start difference. First operand has 225 places, 186 transitions, 598 flow. Second operand 7 states and 1248 transitions. [2022-11-16 10:55:02,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 195 transitions, 713 flow [2022-11-16 10:55:02,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 195 transitions, 701 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:55:02,602 INFO L231 Difference]: Finished difference. Result has 229 places, 189 transitions, 622 flow [2022-11-16 10:55:02,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=229, PETRI_TRANSITIONS=189} [2022-11-16 10:55:02,603 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 56 predicate places. [2022-11-16 10:55:02,603 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 189 transitions, 622 flow [2022-11-16 10:55:02,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:02,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:02,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 10:55:02,604 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-16 10:55:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash -151228845, now seen corresponding path program 1 times [2022-11-16 10:55:02,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:02,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868107172] [2022-11-16 10:55:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:02,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:02,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868107172] [2022-11-16 10:55:02,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868107172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:02,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:02,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247740745] [2022-11-16 10:55:02,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:02,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:02,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:02,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:55:02,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 217 [2022-11-16 10:55:02,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 189 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 175.66666666666666) internal successors, (1054), 6 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:02,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 217 [2022-11-16 10:55:02,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:03,038 INFO L130 PetriNetUnfolder]: 197/843 cut-off events. [2022-11-16 10:55:03,038 INFO L131 PetriNetUnfolder]: For 412/415 co-relation queries the response was YES. [2022-11-16 10:55:03,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1742 conditions, 843 events. 197/843 cut-off events. For 412/415 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7091 event pairs, 92 based on Foata normal form. 5/716 useless extension candidates. Maximal degree in co-relation 1671. Up to 219 conditions per place. [2022-11-16 10:55:03,047 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 0 selfloop transitions, 0 changer transitions 204/204 dead transitions. [2022-11-16 10:55:03,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 204 transitions, 780 flow [2022-11-16 10:55:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:55:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:55:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1254 transitions. [2022-11-16 10:55:03,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825543120473996 [2022-11-16 10:55:03,062 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1254 transitions. [2022-11-16 10:55:03,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1254 transitions. [2022-11-16 10:55:03,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:03,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1254 transitions. [2022-11-16 10:55:03,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.14285714285714) internal successors, (1254), 7 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:03,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:03,066 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:03,066 INFO L175 Difference]: Start difference. First operand has 229 places, 189 transitions, 622 flow. Second operand 7 states and 1254 transitions. [2022-11-16 10:55:03,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 204 transitions, 780 flow [2022-11-16 10:55:03,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 204 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:55:03,072 INFO L231 Difference]: Finished difference. Result has 233 places, 0 transitions, 0 flow [2022-11-16 10:55:03,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=233, PETRI_TRANSITIONS=0} [2022-11-16 10:55:03,073 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 60 predicate places. [2022-11-16 10:55:03,074 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 0 transitions, 0 flow [2022-11-16 10:55:03,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.66666666666666) internal successors, (1054), 6 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:03,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 26 remaining) [2022-11-16 10:55:03,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-16 10:55:03,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-16 10:55:03,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-16 10:55:03,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-16 10:55:03,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-16 10:55:03,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-16 10:55:03,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-16 10:55:03,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-16 10:55:03,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-16 10:55:03,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-16 10:55:03,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-16 10:55:03,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2022-11-16 10:55:03,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-16 10:55:03,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-16 10:55:03,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-16 10:55:03,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-16 10:55:03,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-16 10:55:03,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-16 10:55:03,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-16 10:55:03,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-16 10:55:03,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-16 10:55:03,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-16 10:55:03,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-16 10:55:03,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-16 10:55:03,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-16 10:55:03,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 10:55:03,082 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:03,088 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 10:55:03,088 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:55:03,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:55:03 BasicIcfg [2022-11-16 10:55:03,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:55:03,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:55:03,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:55:03,096 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:55:03,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:53" (3/4) ... [2022-11-16 10:55:03,099 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 10:55:03,105 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 10:55:03,105 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 10:55:03,111 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-16 10:55:03,111 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 10:55:03,111 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 10:55:03,111 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 10:55:03,151 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 10:55:03,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:55:03,153 INFO L158 Benchmark]: Toolchain (without parser) took 10656.98ms. Allocated memory was 130.0MB in the beginning and 237.0MB in the end (delta: 107.0MB). Free memory was 96.5MB in the beginning and 174.3MB in the end (delta: -77.7MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2022-11-16 10:55:03,153 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 88.1MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:55:03,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.43ms. Allocated memory is still 130.0MB. Free memory was 96.1MB in the beginning and 105.7MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 10:55:03,154 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.41ms. Allocated memory is still 130.0MB. Free memory was 105.7MB in the beginning and 103.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:55:03,154 INFO L158 Benchmark]: Boogie Preprocessor took 32.84ms. Allocated memory is still 130.0MB. Free memory was 103.6MB in the beginning and 102.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:55:03,155 INFO L158 Benchmark]: RCFGBuilder took 844.81ms. Allocated memory is still 130.0MB. Free memory was 102.0MB in the beginning and 83.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 10:55:03,155 INFO L158 Benchmark]: TraceAbstraction took 9239.54ms. Allocated memory was 130.0MB in the beginning and 237.0MB in the end (delta: 107.0MB). Free memory was 82.6MB in the beginning and 177.4MB in the end (delta: -94.8MB). Peak memory consumption was 124.7MB. Max. memory is 16.1GB. [2022-11-16 10:55:03,155 INFO L158 Benchmark]: Witness Printer took 55.74ms. Allocated memory is still 237.0MB. Free memory was 177.4MB in the beginning and 174.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 10:55:03,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 88.1MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.43ms. Allocated memory is still 130.0MB. Free memory was 96.1MB in the beginning and 105.7MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.41ms. Allocated memory is still 130.0MB. Free memory was 105.7MB in the beginning and 103.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.84ms. Allocated memory is still 130.0MB. Free memory was 103.6MB in the beginning and 102.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 844.81ms. Allocated memory is still 130.0MB. Free memory was 102.0MB in the beginning and 83.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9239.54ms. Allocated memory was 130.0MB in the beginning and 237.0MB in the end (delta: 107.0MB). Free memory was 82.6MB in the beginning and 177.4MB in the end (delta: -94.8MB). Peak memory consumption was 124.7MB. Max. memory is 16.1GB. * Witness Printer took 55.74ms. Allocated memory is still 237.0MB. Free memory was 177.4MB in the beginning and 174.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 325 locations, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.0s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 984 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 984 mSDsluCounter, 507 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 257 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1637 IncrementalHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 250 mSDtfsCounter, 1637 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=622occurred in iteration=17, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1090 NumberOfCodeBlocks, 1090 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1072 ConstructedInterpolants, 0 QuantifiedInterpolants, 2454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 10:55:03,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bffc6ef-c4cb-4425-8930-44f415464739/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE