./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a --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 e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --- 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-b5237d8 [2022-11-21 16:24:58,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:24:58,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:24:58,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:24:58,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:24:58,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:24:58,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:24:58,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:24:58,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:24:58,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:24:58,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:24:58,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:24:58,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:24:58,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:24:58,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:24:58,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:24:58,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:24:58,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:24:58,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:24:58,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:24:58,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:24:58,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:24:58,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:24:58,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:24:58,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:24:58,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:24:58,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:24:58,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:24:58,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:24:58,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:24:58,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:24:58,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:24:58,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:24:58,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:24:58,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:24:58,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:24:58,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:24:58,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:24:58,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:24:58,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:24:58,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:24:58,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:24:58,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:24:58,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:24:58,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:24:58,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:24:58,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:24:58,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:24:58,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:24:58,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:24:58,139 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:24:58,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:24:58,140 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:24:58,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:24:58,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:24:58,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:24:58,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:24:58,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:24:58,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:24:58,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:24:58,141 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:24:58,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:24:58,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:24:58,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:24:58,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:24:58,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:24:58,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:24:58,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:24:58,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:24:58,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:24:58,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:24:58,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:24:58,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:24:58,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:24:58,144 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:24:58,144 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:24:58,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:24:58,144 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_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e [2022-11-21 16:24:58,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:24:58,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:24:58,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:24:58,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:24:58,410 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:24:58,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-11-21 16:25:01,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:25:01,827 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:25:01,827 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-11-21 16:25:01,836 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/data/1c2fcc625/cc4e776d30dd4e34b77de2e07cd6a08b/FLAGe49cb0446 [2022-11-21 16:25:01,855 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/data/1c2fcc625/cc4e776d30dd4e34b77de2e07cd6a08b [2022-11-21 16:25:01,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:25:01,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:25:01,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:25:01,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:25:01,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:25:01,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:25:01" (1/1) ... [2022-11-21 16:25:01,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315871bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:01, skipping insertion in model container [2022-11-21 16:25:01,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:25:01" (1/1) ... [2022-11-21 16:25:01,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:25:01,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:25:02,142 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-11-21 16:25:02,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:25:02,161 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:25:02,190 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-11-21 16:25:02,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:25:02,207 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:25:02,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02 WrapperNode [2022-11-21 16:25:02,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:25:02,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:25:02,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:25:02,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:25:02,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,256 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 131 [2022-11-21 16:25:02,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:25:02,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:25:02,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:25:02,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:25:02,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:25:02,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:25:02,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:25:02,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:25:02,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (1/1) ... [2022-11-21 16:25:02,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:25:02,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:02,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:25:02,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:25:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:25:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:25:02,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:25:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:25:02,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:25:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:25:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:25:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:25:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:25:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:25:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:25:02,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:25:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:25:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:25:02,391 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:25:02,557 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:25:02,559 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:25:02,833 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:25:02,972 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:25:02,978 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:25:02,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:25:02 BoogieIcfgContainer [2022-11-21 16:25:02,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:25:02,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:25:02,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:25:02,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:25:02,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:25:01" (1/3) ... [2022-11-21 16:25:02,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3adf0f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:25:02, skipping insertion in model container [2022-11-21 16:25:02,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:02" (2/3) ... [2022-11-21 16:25:02,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3adf0f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:25:02, skipping insertion in model container [2022-11-21 16:25:02,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:25:02" (3/3) ... [2022-11-21 16:25:02,995 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-11-21 16:25:03,005 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:25:03,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:25:03,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 16:25:03,017 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:25:03,142 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:25:03,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 196 flow [2022-11-21 16:25:03,245 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-11-21 16:25:03,245 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:25:03,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 1/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-11-21 16:25:03,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 90 transitions, 196 flow [2022-11-21 16:25:03,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 147 flow [2022-11-21 16:25:03,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:25:03,274 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;@25cdfb46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:25:03,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-21 16:25:03,285 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-21 16:25:03,285 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:25:03,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:03,286 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] [2022-11-21 16:25:03,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash 467468219, now seen corresponding path program 1 times [2022-11-21 16:25:03,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:03,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446955113] [2022-11-21 16:25:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:03,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446955113] [2022-11-21 16:25:03,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446955113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:03,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:03,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:25:03,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573197542] [2022-11-21 16:25:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:03,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:25:03,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:25:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:25:03,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2022-11-21 16:25:03,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:03,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:03,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2022-11-21 16:25:03,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:03,929 INFO L130 PetriNetUnfolder]: 94/371 cut-off events. [2022-11-21 16:25:03,929 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-21 16:25:03,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 371 events. 94/371 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2045 event pairs, 20 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 539. Up to 82 conditions per place. [2022-11-21 16:25:03,935 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 38 selfloop transitions, 6 changer transitions 2/95 dead transitions. [2022-11-21 16:25:03,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 95 transitions, 300 flow [2022-11-21 16:25:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:25:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:25:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2022-11-21 16:25:03,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8555555555555555 [2022-11-21 16:25:03,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2022-11-21 16:25:03,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2022-11-21 16:25:03,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:03,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2022-11-21 16:25:03,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:03,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:03,968 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:03,970 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 147 flow. Second operand 5 states and 385 transitions. [2022-11-21 16:25:03,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 95 transitions, 300 flow [2022-11-21 16:25:03,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 95 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:25:03,978 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 174 flow [2022-11-21 16:25:03,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2022-11-21 16:25:03,984 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-11-21 16:25:03,984 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 174 flow [2022-11-21 16:25:03,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:03,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:03,985 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] [2022-11-21 16:25:03,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:25:03,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:03,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:03,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1674409468, now seen corresponding path program 1 times [2022-11-21 16:25:03,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:03,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212711929] [2022-11-21 16:25:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:04,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:04,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212711929] [2022-11-21 16:25:04,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212711929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:04,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:04,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:25:04,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900551595] [2022-11-21 16:25:04,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:04,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:25:04,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:04,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:25:04,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:25:04,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 90 [2022-11-21 16:25:04,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:04,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 90 [2022-11-21 16:25:04,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:04,371 INFO L130 PetriNetUnfolder]: 82/381 cut-off events. [2022-11-21 16:25:04,371 INFO L131 PetriNetUnfolder]: For 68/81 co-relation queries the response was YES. [2022-11-21 16:25:04,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 381 events. 82/381 cut-off events. For 68/81 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2132 event pairs, 51 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 581. Up to 119 conditions per place. [2022-11-21 16:25:04,375 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 27 selfloop transitions, 5 changer transitions 4/87 dead transitions. [2022-11-21 16:25:04,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 87 transitions, 289 flow [2022-11-21 16:25:04,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:25:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:25:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2022-11-21 16:25:04,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2022-11-21 16:25:04,380 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2022-11-21 16:25:04,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2022-11-21 16:25:04,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:04,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2022-11-21 16:25:04,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,387 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,389 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 174 flow. Second operand 5 states and 370 transitions. [2022-11-21 16:25:04,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 87 transitions, 289 flow [2022-11-21 16:25:04,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:25:04,396 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 196 flow [2022-11-21 16:25:04,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2022-11-21 16:25:04,399 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 7 predicate places. [2022-11-21 16:25:04,400 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 196 flow [2022-11-21 16:25:04,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:04,401 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] [2022-11-21 16:25:04,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:25:04,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash 54505802, now seen corresponding path program 1 times [2022-11-21 16:25:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:04,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497370146] [2022-11-21 16:25:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:04,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:04,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:04,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497370146] [2022-11-21 16:25:04,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497370146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:04,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:04,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:25:04,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090906007] [2022-11-21 16:25:04,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:04,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:25:04,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:04,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:25:04,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:25:04,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2022-11-21 16:25:04,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:04,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2022-11-21 16:25:04,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:04,747 INFO L130 PetriNetUnfolder]: 95/410 cut-off events. [2022-11-21 16:25:04,747 INFO L131 PetriNetUnfolder]: For 127/144 co-relation queries the response was YES. [2022-11-21 16:25:04,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 410 events. 95/410 cut-off events. For 127/144 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2456 event pairs, 19 based on Foata normal form. 7/407 useless extension candidates. Maximal degree in co-relation 414. Up to 96 conditions per place. [2022-11-21 16:25:04,753 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 38 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2022-11-21 16:25:04,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 360 flow [2022-11-21 16:25:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:25:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:25:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 383 transitions. [2022-11-21 16:25:04,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8511111111111112 [2022-11-21 16:25:04,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 383 transitions. [2022-11-21 16:25:04,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 383 transitions. [2022-11-21 16:25:04,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:04,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 383 transitions. [2022-11-21 16:25:04,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,760 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 196 flow. Second operand 5 states and 383 transitions. [2022-11-21 16:25:04,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 360 flow [2022-11-21 16:25:04,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:25:04,766 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 224 flow [2022-11-21 16:25:04,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2022-11-21 16:25:04,769 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 11 predicate places. [2022-11-21 16:25:04,769 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 224 flow [2022-11-21 16:25:04,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:04,770 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] [2022-11-21 16:25:04,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:25:04,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:04,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:04,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1860897946, now seen corresponding path program 1 times [2022-11-21 16:25:04,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:04,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750206062] [2022-11-21 16:25:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:04,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:04,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750206062] [2022-11-21 16:25:04,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750206062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:04,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:04,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:25:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763626355] [2022-11-21 16:25:04,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:04,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:25:04,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:25:04,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:25:04,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2022-11-21 16:25:04,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:04,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:04,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2022-11-21 16:25:04,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:05,210 INFO L130 PetriNetUnfolder]: 113/455 cut-off events. [2022-11-21 16:25:05,211 INFO L131 PetriNetUnfolder]: For 216/226 co-relation queries the response was YES. [2022-11-21 16:25:05,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 455 events. 113/455 cut-off events. For 216/226 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2722 event pairs, 7 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 581. Up to 79 conditions per place. [2022-11-21 16:25:05,215 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 63 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2022-11-21 16:25:05,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 126 transitions, 589 flow [2022-11-21 16:25:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:25:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:25:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 765 transitions. [2022-11-21 16:25:05,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2022-11-21 16:25:05,219 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 765 transitions. [2022-11-21 16:25:05,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 765 transitions. [2022-11-21 16:25:05,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:05,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 765 transitions. [2022-11-21 16:25:05,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 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) [2022-11-21 16:25:05,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,231 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,232 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 224 flow. Second operand 11 states and 765 transitions. [2022-11-21 16:25:05,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 126 transitions, 589 flow [2022-11-21 16:25:05,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 126 transitions, 577 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:25:05,241 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 312 flow [2022-11-21 16:25:05,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=312, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2022-11-21 16:25:05,248 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2022-11-21 16:25:05,249 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 312 flow [2022-11-21 16:25:05,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:05,251 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] [2022-11-21 16:25:05,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:25:05,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:05,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1860897947, now seen corresponding path program 1 times [2022-11-21 16:25:05,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:05,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503645481] [2022-11-21 16:25:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:05,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:05,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503645481] [2022-11-21 16:25:05,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503645481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:05,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:05,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:25:05,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228270671] [2022-11-21 16:25:05,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:05,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:25:05,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:25:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:25:05,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2022-11-21 16:25:05,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:05,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2022-11-21 16:25:05,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:05,640 INFO L130 PetriNetUnfolder]: 108/443 cut-off events. [2022-11-21 16:25:05,640 INFO L131 PetriNetUnfolder]: For 345/354 co-relation queries the response was YES. [2022-11-21 16:25:05,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 443 events. 108/443 cut-off events. For 345/354 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2630 event pairs, 21 based on Foata normal form. 6/439 useless extension candidates. Maximal degree in co-relation 967. Up to 117 conditions per place. [2022-11-21 16:25:05,645 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 45 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2022-11-21 16:25:05,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 528 flow [2022-11-21 16:25:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:25:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:25:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 737 transitions. [2022-11-21 16:25:05,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2022-11-21 16:25:05,648 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 737 transitions. [2022-11-21 16:25:05,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 737 transitions. [2022-11-21 16:25:05,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:05,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 737 transitions. [2022-11-21 16:25:05,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 67.0) internal successors, (737), 11 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) [2022-11-21 16:25:05,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,654 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,654 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 312 flow. Second operand 11 states and 737 transitions. [2022-11-21 16:25:05,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 528 flow [2022-11-21 16:25:05,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 500 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:25:05,661 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 326 flow [2022-11-21 16:25:05,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=326, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2022-11-21 16:25:05,665 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2022-11-21 16:25:05,665 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 326 flow [2022-11-21 16:25:05,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:05,666 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] [2022-11-21 16:25:05,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:25:05,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:05,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash 285041191, now seen corresponding path program 1 times [2022-11-21 16:25:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:05,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947940938] [2022-11-21 16:25:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:05,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:05,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:05,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947940938] [2022-11-21 16:25:05,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947940938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:05,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:05,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:25:05,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236498873] [2022-11-21 16:25:05,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:05,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:25:05,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:25:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:25:05,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2022-11-21 16:25:05,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:05,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2022-11-21 16:25:05,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:05,977 INFO L130 PetriNetUnfolder]: 103/427 cut-off events. [2022-11-21 16:25:05,977 INFO L131 PetriNetUnfolder]: For 366/375 co-relation queries the response was YES. [2022-11-21 16:25:05,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 427 events. 103/427 cut-off events. For 366/375 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2530 event pairs, 43 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 610. Up to 110 conditions per place. [2022-11-21 16:25:05,980 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 43 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2022-11-21 16:25:05,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 512 flow [2022-11-21 16:25:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:25:05,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:25:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 673 transitions. [2022-11-21 16:25:05,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7477777777777778 [2022-11-21 16:25:05,983 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 673 transitions. [2022-11-21 16:25:05,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 673 transitions. [2022-11-21 16:25:05,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:05,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 673 transitions. [2022-11-21 16:25:05,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 67.3) internal successors, (673), 10 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,988 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,988 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 326 flow. Second operand 10 states and 673 transitions. [2022-11-21 16:25:05,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 512 flow [2022-11-21 16:25:05,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 105 transitions, 457 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-21 16:25:05,993 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 299 flow [2022-11-21 16:25:05,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=299, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2022-11-21 16:25:05,994 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2022-11-21 16:25:05,994 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 299 flow [2022-11-21 16:25:05,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:05,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:05,995 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] [2022-11-21 16:25:05,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:25:05,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:05,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:05,995 INFO L85 PathProgramCache]: Analyzing trace with hash 285041192, now seen corresponding path program 1 times [2022-11-21 16:25:05,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:05,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223248832] [2022-11-21 16:25:05,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:05,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:06,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223248832] [2022-11-21 16:25:06,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223248832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:06,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:06,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:25:06,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388524177] [2022-11-21 16:25:06,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:06,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:25:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:06,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:25:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:25:06,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2022-11-21 16:25:06,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:06,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2022-11-21 16:25:06,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:06,328 INFO L130 PetriNetUnfolder]: 98/414 cut-off events. [2022-11-21 16:25:06,328 INFO L131 PetriNetUnfolder]: For 250/259 co-relation queries the response was YES. [2022-11-21 16:25:06,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 414 events. 98/414 cut-off events. For 250/259 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2403 event pairs, 8 based on Foata normal form. 6/415 useless extension candidates. Maximal degree in co-relation 527. Up to 51 conditions per place. [2022-11-21 16:25:06,331 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 56 selfloop transitions, 19 changer transitions 0/120 dead transitions. [2022-11-21 16:25:06,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 120 transitions, 568 flow [2022-11-21 16:25:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:25:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:25:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 758 transitions. [2022-11-21 16:25:06,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7656565656565657 [2022-11-21 16:25:06,334 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 758 transitions. [2022-11-21 16:25:06,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 758 transitions. [2022-11-21 16:25:06,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:06,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 758 transitions. [2022-11-21 16:25:06,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.9090909090909) internal successors, (758), 11 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,340 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,340 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 299 flow. Second operand 11 states and 758 transitions. [2022-11-21 16:25:06,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 120 transitions, 568 flow [2022-11-21 16:25:06,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 120 transitions, 528 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 16:25:06,344 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 291 flow [2022-11-21 16:25:06,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=291, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2022-11-21 16:25:06,345 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2022-11-21 16:25:06,345 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 291 flow [2022-11-21 16:25:06,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:06,346 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] [2022-11-21 16:25:06,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:25:06,346 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash -934227428, now seen corresponding path program 1 times [2022-11-21 16:25:06,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:06,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759015845] [2022-11-21 16:25:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:06,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:06,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759015845] [2022-11-21 16:25:06,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759015845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:06,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:06,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:25:06,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79292986] [2022-11-21 16:25:06,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:06,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:25:06,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:06,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:25:06,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:25:06,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 90 [2022-11-21 16:25:06,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:06,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 90 [2022-11-21 16:25:06,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:06,504 INFO L130 PetriNetUnfolder]: 86/396 cut-off events. [2022-11-21 16:25:06,504 INFO L131 PetriNetUnfolder]: For 272/279 co-relation queries the response was YES. [2022-11-21 16:25:06,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 396 events. 86/396 cut-off events. For 272/279 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2355 event pairs, 45 based on Foata normal form. 27/408 useless extension candidates. Maximal degree in co-relation 792. Up to 115 conditions per place. [2022-11-21 16:25:06,507 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 33 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2022-11-21 16:25:06,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 424 flow [2022-11-21 16:25:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:25:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:25:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2022-11-21 16:25:06,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8044444444444444 [2022-11-21 16:25:06,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2022-11-21 16:25:06,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2022-11-21 16:25:06,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:06,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2022-11-21 16:25:06,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,512 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,512 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 291 flow. Second operand 5 states and 362 transitions. [2022-11-21 16:25:06,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 424 flow [2022-11-21 16:25:06,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 378 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 16:25:06,515 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 283 flow [2022-11-21 16:25:06,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2022-11-21 16:25:06,516 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2022-11-21 16:25:06,516 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 283 flow [2022-11-21 16:25:06,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:06,517 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] [2022-11-21 16:25:06,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:25:06,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:06,518 INFO L85 PathProgramCache]: Analyzing trace with hash -464927842, now seen corresponding path program 1 times [2022-11-21 16:25:06,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:06,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129473233] [2022-11-21 16:25:06,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:06,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:06,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:06,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129473233] [2022-11-21 16:25:06,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129473233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:06,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:06,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:25:06,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916089482] [2022-11-21 16:25:06,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:06,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:25:06,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:25:06,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:25:06,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2022-11-21 16:25:06,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:06,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2022-11-21 16:25:06,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:06,772 INFO L130 PetriNetUnfolder]: 83/386 cut-off events. [2022-11-21 16:25:06,772 INFO L131 PetriNetUnfolder]: For 276/283 co-relation queries the response was YES. [2022-11-21 16:25:06,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 386 events. 83/386 cut-off events. For 276/283 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2260 event pairs, 51 based on Foata normal form. 7/382 useless extension candidates. Maximal degree in co-relation 827. Up to 115 conditions per place. [2022-11-21 16:25:06,775 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 32 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2022-11-21 16:25:06,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 395 flow [2022-11-21 16:25:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:25:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:25:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 541 transitions. [2022-11-21 16:25:06,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7513888888888889 [2022-11-21 16:25:06,777 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 541 transitions. [2022-11-21 16:25:06,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 541 transitions. [2022-11-21 16:25:06,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:06,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 541 transitions. [2022-11-21 16:25:06,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,781 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,781 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 283 flow. Second operand 8 states and 541 transitions. [2022-11-21 16:25:06,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 395 flow [2022-11-21 16:25:06,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 388 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:25:06,784 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 282 flow [2022-11-21 16:25:06,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=282, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2022-11-21 16:25:06,785 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2022-11-21 16:25:06,785 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 282 flow [2022-11-21 16:25:06,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:06,786 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] [2022-11-21 16:25:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:25:06,786 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:06,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -524239137, now seen corresponding path program 1 times [2022-11-21 16:25:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:06,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016906720] [2022-11-21 16:25:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:06,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:06,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016906720] [2022-11-21 16:25:06,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016906720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:06,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:06,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:25:06,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560183432] [2022-11-21 16:25:06,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:06,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:25:06,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:25:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:25:06,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2022-11-21 16:25:06,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:06,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:06,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2022-11-21 16:25:06,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:07,002 INFO L130 PetriNetUnfolder]: 80/376 cut-off events. [2022-11-21 16:25:07,002 INFO L131 PetriNetUnfolder]: For 272/279 co-relation queries the response was YES. [2022-11-21 16:25:07,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 376 events. 80/376 cut-off events. For 272/279 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2159 event pairs, 45 based on Foata normal form. 14/383 useless extension candidates. Maximal degree in co-relation 817. Up to 116 conditions per place. [2022-11-21 16:25:07,005 INFO L137 encePairwiseOnDemand]: 83/90 looper letters, 22 selfloop transitions, 4 changer transitions 21/93 dead transitions. [2022-11-21 16:25:07,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 397 flow [2022-11-21 16:25:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:25:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:25:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 477 transitions. [2022-11-21 16:25:07,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2022-11-21 16:25:07,007 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 477 transitions. [2022-11-21 16:25:07,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 477 transitions. [2022-11-21 16:25:07,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:07,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 477 transitions. [2022-11-21 16:25:07,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,011 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,011 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 282 flow. Second operand 7 states and 477 transitions. [2022-11-21 16:25:07,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 397 flow [2022-11-21 16:25:07,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 383 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:25:07,014 INFO L231 Difference]: Finished difference. Result has 97 places, 67 transitions, 213 flow [2022-11-21 16:25:07,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=213, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2022-11-21 16:25:07,015 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2022-11-21 16:25:07,015 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 213 flow [2022-11-21 16:25:07,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:07,016 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] [2022-11-21 16:25:07,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:25:07,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:07,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1911061853, now seen corresponding path program 1 times [2022-11-21 16:25:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:07,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807142498] [2022-11-21 16:25:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:07,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:07,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807142498] [2022-11-21 16:25:07,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807142498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:07,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:07,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:25:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166163216] [2022-11-21 16:25:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:07,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:25:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:25:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:25:07,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2022-11-21 16:25:07,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:07,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2022-11-21 16:25:07,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:07,186 INFO L130 PetriNetUnfolder]: 43/202 cut-off events. [2022-11-21 16:25:07,186 INFO L131 PetriNetUnfolder]: For 102/107 co-relation queries the response was YES. [2022-11-21 16:25:07,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 202 events. 43/202 cut-off events. For 102/107 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 812 event pairs, 29 based on Foata normal form. 5/204 useless extension candidates. Maximal degree in co-relation 391. Up to 88 conditions per place. [2022-11-21 16:25:07,188 INFO L137 encePairwiseOnDemand]: 85/90 looper letters, 21 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2022-11-21 16:25:07,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 71 transitions, 276 flow [2022-11-21 16:25:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:25:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:25:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2022-11-21 16:25:07,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7462962962962963 [2022-11-21 16:25:07,190 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 403 transitions. [2022-11-21 16:25:07,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 403 transitions. [2022-11-21 16:25:07,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:07,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 403 transitions. [2022-11-21 16:25:07,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,193 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,194 INFO L175 Difference]: Start difference. First operand has 97 places, 67 transitions, 213 flow. Second operand 6 states and 403 transitions. [2022-11-21 16:25:07,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 71 transitions, 276 flow [2022-11-21 16:25:07,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 71 transitions, 255 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-21 16:25:07,196 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 194 flow [2022-11-21 16:25:07,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2022-11-21 16:25:07,197 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2022-11-21 16:25:07,197 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 194 flow [2022-11-21 16:25:07,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:25:07,198 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] [2022-11-21 16:25:07,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:25:07,198 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-21 16:25:07,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1911061854, now seen corresponding path program 1 times [2022-11-21 16:25:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:07,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037260208] [2022-11-21 16:25:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:07,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:07,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037260208] [2022-11-21 16:25:07,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037260208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:07,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:07,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:25:07,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518530111] [2022-11-21 16:25:07,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:07,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:25:07,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:25:07,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:25:07,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2022-11-21 16:25:07,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:25:07,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2022-11-21 16:25:07,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:25:07,346 INFO L130 PetriNetUnfolder]: 43/199 cut-off events. [2022-11-21 16:25:07,346 INFO L131 PetriNetUnfolder]: For 69/74 co-relation queries the response was YES. [2022-11-21 16:25:07,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 199 events. 43/199 cut-off events. For 69/74 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 789 event pairs, 29 based on Foata normal form. 8/204 useless extension candidates. Maximal degree in co-relation 354. Up to 88 conditions per place. [2022-11-21 16:25:07,347 INFO L137 encePairwiseOnDemand]: 85/90 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2022-11-21 16:25:07,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 70 transitions, 259 flow [2022-11-21 16:25:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:25:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:25:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2022-11-21 16:25:07,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2022-11-21 16:25:07,349 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 402 transitions. [2022-11-21 16:25:07,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 402 transitions. [2022-11-21 16:25:07,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:25:07,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 402 transitions. [2022-11-21 16:25:07,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,352 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,352 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 194 flow. Second operand 6 states and 402 transitions. [2022-11-21 16:25:07,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 70 transitions, 259 flow [2022-11-21 16:25:07,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 70 transitions, 252 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:25:07,354 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2022-11-21 16:25:07,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2022-11-21 16:25:07,355 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2022-11-21 16:25:07,355 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2022-11-21 16:25:07,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:07,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-21 16:25:07,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-21 16:25:07,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-21 16:25:07,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-21 16:25:07,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-21 16:25:07,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-21 16:25:07,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-21 16:25:07,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-21 16:25:07,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-21 16:25:07,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-21 16:25:07,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-21 16:25:07,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-21 16:25:07,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-21 16:25:07,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-21 16:25:07,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-21 16:25:07,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-21 16:25:07,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-21 16:25:07,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-21 16:25:07,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:25:07,362 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:07,368 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 16:25:07,368 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:25:07,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:25:07 BasicIcfg [2022-11-21 16:25:07,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:25:07,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:25:07,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:25:07,374 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:25:07,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:25:02" (3/4) ... [2022-11-21 16:25:07,377 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:25:07,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 16:25:07,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 16:25:07,387 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-21 16:25:07,387 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 16:25:07,387 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:25:07,387 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:25:07,419 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:25:07,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:25:07,419 INFO L158 Benchmark]: Toolchain (without parser) took 5556.22ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 109.5MB in the beginning and 74.1MB in the end (delta: 35.3MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2022-11-21 16:25:07,420 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:25:07,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.17ms. Allocated memory is still 140.5MB. Free memory was 109.5MB in the beginning and 98.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:25:07,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.28ms. Allocated memory is still 140.5MB. Free memory was 98.5MB in the beginning and 96.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:25:07,421 INFO L158 Benchmark]: Boogie Preprocessor took 42.10ms. Allocated memory is still 140.5MB. Free memory was 96.5MB in the beginning and 95.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:25:07,421 INFO L158 Benchmark]: RCFGBuilder took 682.33ms. Allocated memory is still 140.5MB. Free memory was 95.2MB in the beginning and 77.1MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-21 16:25:07,421 INFO L158 Benchmark]: TraceAbstraction took 4388.26ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 76.3MB in the beginning and 76.2MB in the end (delta: 63.1kB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2022-11-21 16:25:07,421 INFO L158 Benchmark]: Witness Printer took 45.13ms. Allocated memory is still 169.9MB. Free memory was 76.2MB in the beginning and 74.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:25:07,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.17ms. Allocated memory is still 140.5MB. Free memory was 109.5MB in the beginning and 98.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.28ms. Allocated memory is still 140.5MB. Free memory was 98.5MB in the beginning and 96.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.10ms. Allocated memory is still 140.5MB. Free memory was 96.5MB in the beginning and 95.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 682.33ms. Allocated memory is still 140.5MB. Free memory was 95.2MB in the beginning and 77.1MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4388.26ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 76.3MB in the beginning and 76.2MB in the end (delta: 63.1kB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * Witness Printer took 45.13ms. Allocated memory is still 169.9MB. Free memory was 76.2MB in the beginning and 74.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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, 124 locations, 18 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: 4.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 679 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 679 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 712 IncrementalHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 65 mSDtfsCounter, 712 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=326occurred in iteration=5, InterpolantAutomatonStates: 90, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 494 NumberOfCodeBlocks, 494 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 1152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:25:07,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acf894a3-eb98-465c-8920-f7aedd974ec9/bin/uautomizer-vX5HgA9Q3a/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