./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN --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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- 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-6b4ec56 [2022-11-20 11:11:20,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:11:20,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:11:20,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:11:20,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:11:20,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:11:20,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:11:20,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:11:20,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:11:20,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:11:20,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:11:20,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:11:20,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:11:20,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:11:20,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:11:20,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:11:20,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:11:20,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:11:20,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:11:20,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:11:20,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:11:20,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:11:20,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:11:20,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:11:20,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:11:20,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:11:20,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:11:20,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:11:20,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:11:20,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:11:20,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:11:20,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:11:20,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:11:20,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:11:20,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:11:20,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:11:20,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:11:20,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:11:20,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:11:20,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:11:20,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:11:20,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:11:20,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:11:20,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:11:20,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:11:20,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:11:20,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:11:20,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:11:20,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:11:20,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:11:20,292 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:11:20,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:11:20,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:11:20,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:11:20,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:11:20,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:11:20,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:11:20,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:11:20,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:11:20,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:11:20,296 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:11:20,297 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:11:20,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:11:20,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:11:20,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:11:20,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:11:20,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:11:20,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:11:20,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:20,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:11:20,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:11:20,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:11:20,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:11:20,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:11:20,302 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:11:20,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:11:20,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:11:20,303 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_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2022-11-20 11:11:20,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:11:20,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:11:20,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:11:20,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:11:20,733 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:11:20,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-20 11:11:24,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:11:24,526 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:11:24,527 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-20 11:11:24,534 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/data/5516d9e65/75c8493a08464edca66675b6d5bbdde1/FLAG38dc91ac9 [2022-11-20 11:11:24,551 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/data/5516d9e65/75c8493a08464edca66675b6d5bbdde1 [2022-11-20 11:11:24,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:11:24,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:11:24,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:24,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:11:24,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:11:24,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:24" (1/1) ... [2022-11-20 11:11:24,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd732c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:24, skipping insertion in model container [2022-11-20 11:11:24,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:24" (1/1) ... [2022-11-20 11:11:24,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:11:24,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:11:24,939 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_e681126d-d39f-4da4-9d70-f22f5f30da03/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-20 11:11:24,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:24,972 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:11:25,006 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_e681126d-d39f-4da4-9d70-f22f5f30da03/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-20 11:11:25,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:25,037 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:11:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25 WrapperNode [2022-11-20 11:11:25,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:25,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:25,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:11:25,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:11:25,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,148 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 284 [2022-11-20 11:11:25,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:25,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:11:25,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:11:25,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:11:25,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,227 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:11:25,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:11:25,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:11:25,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:11:25,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (1/1) ... [2022-11-20 11:11:25,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:25,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:25,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:25,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:11:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:11:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:11:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:11:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:11:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:11:25,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:11:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:11:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:11:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:11:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:11:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:11:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:11:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:11:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:11:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:11:25,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:11:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:11:25,357 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:11:25,573 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:11:25,576 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:11:26,283 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:11:26,572 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:11:26,573 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 11:11:26,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:26 BoogieIcfgContainer [2022-11-20 11:11:26,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:11:26,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:11:26,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:11:26,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:11:26,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:11:24" (1/3) ... [2022-11-20 11:11:26,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1eaf26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:26, skipping insertion in model container [2022-11-20 11:11:26,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:25" (2/3) ... [2022-11-20 11:11:26,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1eaf26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:26, skipping insertion in model container [2022-11-20 11:11:26,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:26" (3/3) ... [2022-11-20 11:11:26,587 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2022-11-20 11:11:26,597 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:11:26,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:11:26,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-20 11:11:26,610 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:11:26,802 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:11:26,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 390 transitions, 804 flow [2022-11-20 11:11:27,044 INFO L130 PetriNetUnfolder]: 31/387 cut-off events. [2022-11-20 11:11:27,050 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:11:27,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 387 events. 31/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 406 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 294. Up to 3 conditions per place. [2022-11-20 11:11:27,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 390 transitions, 804 flow [2022-11-20 11:11:27,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 362 transitions, 742 flow [2022-11-20 11:11:27,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:11:27,108 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;@1776bc02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:11:27,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-11-20 11:11:27,129 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-11-20 11:11:27,129 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:11:27,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:27,130 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:27,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:11:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1133252855, now seen corresponding path program 1 times [2022-11-20 11:11:27,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:27,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125836335] [2022-11-20 11:11:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:27,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:27,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:27,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125836335] [2022-11-20 11:11:27,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125836335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:27,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:27,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:27,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416288723] [2022-11-20 11:11:27,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:27,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:27,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:27,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:27,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-11-20 11:11:27,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 362 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:27,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:27,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-11-20 11:11:27,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:28,632 INFO L130 PetriNetUnfolder]: 159/882 cut-off events. [2022-11-20 11:11:28,633 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-11-20 11:11:28,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 882 events. 159/882 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3199 event pairs, 74 based on Foata normal form. 117/750 useless extension candidates. Maximal degree in co-relation 536. Up to 150 conditions per place. [2022-11-20 11:11:28,654 INFO L137 encePairwiseOnDemand]: 351/390 looper letters, 76 selfloop transitions, 14 changer transitions 11/383 dead transitions. [2022-11-20 11:11:28,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 383 transitions, 982 flow [2022-11-20 11:11:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:11:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1722 transitions. [2022-11-20 11:11:28,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830769230769231 [2022-11-20 11:11:28,688 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1722 transitions. [2022-11-20 11:11:28,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1722 transitions. [2022-11-20 11:11:28,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:28,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1722 transitions. [2022-11-20 11:11:28,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.4) internal successors, (1722), 5 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:28,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:28,723 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:28,726 INFO L175 Difference]: Start difference. First operand has 342 places, 362 transitions, 742 flow. Second operand 5 states and 1722 transitions. [2022-11-20 11:11:28,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 383 transitions, 982 flow [2022-11-20 11:11:28,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 383 transitions, 958 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:11:28,749 INFO L231 Difference]: Finished difference. Result has 341 places, 343 transitions, 774 flow [2022-11-20 11:11:28,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=341, PETRI_TRANSITIONS=343} [2022-11-20 11:11:28,759 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, -1 predicate places. [2022-11-20 11:11:28,760 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 343 transitions, 774 flow [2022-11-20 11:11:28,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:28,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:28,763 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:28,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:11:28,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:11:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1598332872, now seen corresponding path program 1 times [2022-11-20 11:11:28,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:28,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29505277] [2022-11-20 11:11:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:28,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:29,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29505277] [2022-11-20 11:11:29,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29505277] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:29,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783802820] [2022-11-20 11:11:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:29,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:29,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:29,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:29,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:11:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:11:29,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:29,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:29,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783802820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:29,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:11:29,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:11:29,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457364407] [2022-11-20 11:11:29,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:29,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:11:29,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:29,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:11:29,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:11:29,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-11-20 11:11:29,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 343 transitions, 774 flow. Second operand has 12 states, 12 states have (on average 321.6666666666667) internal successors, (3860), 12 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:29,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:29,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-11-20 11:11:29,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:31,031 INFO L130 PetriNetUnfolder]: 396/2034 cut-off events. [2022-11-20 11:11:31,032 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-11-20 11:11:31,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2872 conditions, 2034 events. 396/2034 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11388 event pairs, 185 based on Foata normal form. 9/1473 useless extension candidates. Maximal degree in co-relation 1936. Up to 141 conditions per place. [2022-11-20 11:11:31,066 INFO L137 encePairwiseOnDemand]: 367/390 looper letters, 154 selfloop transitions, 62 changer transitions 0/498 dead transitions. [2022-11-20 11:11:31,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 498 transitions, 1618 flow [2022-11-20 11:11:31,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:11:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:11:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5967 transitions. [2022-11-20 11:11:31,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-11-20 11:11:31,125 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5967 transitions. [2022-11-20 11:11:31,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5967 transitions. [2022-11-20 11:11:31,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:31,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5967 transitions. [2022-11-20 11:11:31,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 331.5) internal successors, (5967), 18 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:31,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 390.0) internal successors, (7410), 19 states have internal predecessors, (7410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:31,171 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 390.0) internal successors, (7410), 19 states have internal predecessors, (7410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:31,172 INFO L175 Difference]: Start difference. First operand has 341 places, 343 transitions, 774 flow. Second operand 18 states and 5967 transitions. [2022-11-20 11:11:31,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 498 transitions, 1618 flow [2022-11-20 11:11:31,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 498 transitions, 1610 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:11:31,189 INFO L231 Difference]: Finished difference. Result has 350 places, 385 transitions, 1136 flow [2022-11-20 11:11:31,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1136, PETRI_PLACES=350, PETRI_TRANSITIONS=385} [2022-11-20 11:11:31,191 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 8 predicate places. [2022-11-20 11:11:31,192 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 385 transitions, 1136 flow [2022-11-20 11:11:31,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 321.6666666666667) internal successors, (3860), 12 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:31,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:31,196 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:31,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:31,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:31,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:11:31,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:31,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1991289503, now seen corresponding path program 1 times [2022-11-20 11:11:31,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:31,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129309317] [2022-11-20 11:11:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:31,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:31,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:31,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129309317] [2022-11-20 11:11:31,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129309317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:31,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956638297] [2022-11-20 11:11:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:31,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:31,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:31,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:31,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:11:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:11:31,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:31,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:31,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956638297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:31,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:31,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:11:31,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834534913] [2022-11-20 11:11:31,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:31,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:11:31,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:11:31,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:31,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-11-20 11:11:31,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 385 transitions, 1136 flow. Second operand has 6 states, 6 states have (on average 321.3333333333333) internal successors, (1928), 6 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:31,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:31,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-11-20 11:11:31,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:32,929 INFO L130 PetriNetUnfolder]: 396/2022 cut-off events. [2022-11-20 11:11:32,929 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-11-20 11:11:32,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 2022 events. 396/2022 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11298 event pairs, 185 based on Foata normal form. 12/1464 useless extension candidates. Maximal degree in co-relation 2297. Up to 492 conditions per place. [2022-11-20 11:11:32,955 INFO L137 encePairwiseOnDemand]: 373/390 looper letters, 77 selfloop transitions, 43 changer transitions 0/402 dead transitions. [2022-11-20 11:11:32,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 402 transitions, 1365 flow [2022-11-20 11:11:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:11:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:11:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2323 transitions. [2022-11-20 11:11:32,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8509157509157509 [2022-11-20 11:11:32,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2323 transitions. [2022-11-20 11:11:32,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2323 transitions. [2022-11-20 11:11:32,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:32,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2323 transitions. [2022-11-20 11:11:32,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 331.85714285714283) internal successors, (2323), 7 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:32,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:32,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:32,985 INFO L175 Difference]: Start difference. First operand has 350 places, 385 transitions, 1136 flow. Second operand 7 states and 2323 transitions. [2022-11-20 11:11:32,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 402 transitions, 1365 flow [2022-11-20 11:11:32,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 402 transitions, 1249 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 11:11:33,008 INFO L231 Difference]: Finished difference. Result has 344 places, 373 transitions, 1025 flow [2022-11-20 11:11:33,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1025, PETRI_PLACES=344, PETRI_TRANSITIONS=373} [2022-11-20 11:11:33,013 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 2 predicate places. [2022-11-20 11:11:33,014 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 373 transitions, 1025 flow [2022-11-20 11:11:33,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.3333333333333) internal successors, (1928), 6 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:33,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:33,018 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:33,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:33,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:33,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:11:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash -89243447, now seen corresponding path program 2 times [2022-11-20 11:11:33,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:33,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355201464] [2022-11-20 11:11:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:33,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:33,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:33,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355201464] [2022-11-20 11:11:33,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355201464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:33,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115701564] [2022-11-20 11:11:33,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:33,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:33,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:33,689 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:33,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:11:33,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:33,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:33,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:11:33,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:11:34,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:11:34,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115701564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:34,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:11:34,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:11:34,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528717159] [2022-11-20 11:11:34,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:34,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:11:34,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:11:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:11:34,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 390 [2022-11-20 11:11:34,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 373 transitions, 1025 flow. Second operand has 18 states, 18 states have (on average 295.72222222222223) internal successors, (5323), 18 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:34,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:34,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 390 [2022-11-20 11:11:34,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:38,204 INFO L130 PetriNetUnfolder]: 3074/8288 cut-off events. [2022-11-20 11:11:38,204 INFO L131 PetriNetUnfolder]: For 528/528 co-relation queries the response was YES. [2022-11-20 11:11:38,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13178 conditions, 8288 events. 3074/8288 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 65578 event pairs, 1939 based on Foata normal form. 6/5060 useless extension candidates. Maximal degree in co-relation 10765. Up to 707 conditions per place. [2022-11-20 11:11:38,294 INFO L137 encePairwiseOnDemand]: 363/390 looper letters, 260 selfloop transitions, 81 changer transitions 0/596 dead transitions. [2022-11-20 11:11:38,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 596 transitions, 2256 flow [2022-11-20 11:11:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:11:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 11:11:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7355 transitions. [2022-11-20 11:11:38,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7857905982905983 [2022-11-20 11:11:38,318 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7355 transitions. [2022-11-20 11:11:38,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7355 transitions. [2022-11-20 11:11:38,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:38,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7355 transitions. [2022-11-20 11:11:38,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 306.4583333333333) internal successors, (7355), 24 states have internal predecessors, (7355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:38,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:38,397 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:38,398 INFO L175 Difference]: Start difference. First operand has 344 places, 373 transitions, 1025 flow. Second operand 24 states and 7355 transitions. [2022-11-20 11:11:38,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 596 transitions, 2256 flow [2022-11-20 11:11:38,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 596 transitions, 2165 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 11:11:38,412 INFO L231 Difference]: Finished difference. Result has 356 places, 389 transitions, 1188 flow [2022-11-20 11:11:38,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1188, PETRI_PLACES=356, PETRI_TRANSITIONS=389} [2022-11-20 11:11:38,414 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 14 predicate places. [2022-11-20 11:11:38,415 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 389 transitions, 1188 flow [2022-11-20 11:11:38,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 295.72222222222223) internal successors, (5323), 18 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:38,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:38,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:38,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:38,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:38,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:11:38,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1957827463, now seen corresponding path program 1 times [2022-11-20 11:11:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:38,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730431955] [2022-11-20 11:11:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:39,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:39,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730431955] [2022-11-20 11:11:39,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730431955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:39,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:39,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:11:39,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398718639] [2022-11-20 11:11:39,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:39,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:11:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:11:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:39,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 390 [2022-11-20 11:11:39,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 389 transitions, 1188 flow. Second operand has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:39,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:39,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 390 [2022-11-20 11:11:39,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:41,848 INFO L130 PetriNetUnfolder]: 2635/7140 cut-off events. [2022-11-20 11:11:41,849 INFO L131 PetriNetUnfolder]: For 549/549 co-relation queries the response was YES. [2022-11-20 11:11:41,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 7140 events. 2635/7140 cut-off events. For 549/549 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 55392 event pairs, 1662 based on Foata normal form. 3/4389 useless extension candidates. Maximal degree in co-relation 1810. Up to 3888 conditions per place. [2022-11-20 11:11:41,908 INFO L137 encePairwiseOnDemand]: 372/390 looper letters, 120 selfloop transitions, 25 changer transitions 0/393 dead transitions. [2022-11-20 11:11:41,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 393 transitions, 1482 flow [2022-11-20 11:11:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:11:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:11:41,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2167 transitions. [2022-11-20 11:11:41,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.694551282051282 [2022-11-20 11:11:41,915 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2167 transitions. [2022-11-20 11:11:41,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2167 transitions. [2022-11-20 11:11:41,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:41,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2167 transitions. [2022-11-20 11:11:41,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 270.875) internal successors, (2167), 8 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:41,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:41,931 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:41,931 INFO L175 Difference]: Start difference. First operand has 356 places, 389 transitions, 1188 flow. Second operand 8 states and 2167 transitions. [2022-11-20 11:11:41,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 393 transitions, 1482 flow [2022-11-20 11:11:41,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 393 transitions, 1318 flow, removed 12 selfloop flow, removed 16 redundant places. [2022-11-20 11:11:41,944 INFO L231 Difference]: Finished difference. Result has 348 places, 387 transitions, 1072 flow [2022-11-20 11:11:41,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1072, PETRI_PLACES=348, PETRI_TRANSITIONS=387} [2022-11-20 11:11:41,948 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 6 predicate places. [2022-11-20 11:11:41,948 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 387 transitions, 1072 flow [2022-11-20 11:11:41,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:41,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:41,950 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:11:41,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:11:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:41,952 INFO L85 PathProgramCache]: Analyzing trace with hash -870973157, now seen corresponding path program 1 times [2022-11-20 11:11:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:41,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048699545] [2022-11-20 11:11:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:41,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:11:43,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:43,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048699545] [2022-11-20 11:11:43,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048699545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:43,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711809154] [2022-11-20 11:11:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:43,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:43,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:43,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:11:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:43,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:11:43,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:43,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:11:43,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:11:43,967 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:11:43,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:11:44,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:11:44,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 11:11:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:11:44,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:44,373 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_146) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-11-20 11:11:44,404 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_146) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-11-20 11:11:45,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:11:45,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-20 11:11:45,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:11:45,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-20 11:11:45,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-11-20 11:11:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-20 11:11:45,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711809154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:45,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:11:45,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2022-11-20 11:11:45,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310970410] [2022-11-20 11:11:45,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:45,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 11:11:45,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:45,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 11:11:45,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=937, Unknown=5, NotChecked=126, Total=1190 [2022-11-20 11:11:45,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 390 [2022-11-20 11:11:45,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 387 transitions, 1072 flow. Second operand has 35 states, 35 states have (on average 243.28571428571428) internal successors, (8515), 35 states have internal predecessors, (8515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:45,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:45,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 390 [2022-11-20 11:11:45,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:01,265 INFO L130 PetriNetUnfolder]: 19663/47628 cut-off events. [2022-11-20 11:12:01,265 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2022-11-20 11:12:01,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74198 conditions, 47628 events. 19663/47628 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 516271 event pairs, 10968 based on Foata normal form. 0/31188 useless extension candidates. Maximal degree in co-relation 54480. Up to 6402 conditions per place. [2022-11-20 11:12:01,741 INFO L137 encePairwiseOnDemand]: 345/390 looper letters, 347 selfloop transitions, 81 changer transitions 0/648 dead transitions. [2022-11-20 11:12:01,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 648 transitions, 2539 flow [2022-11-20 11:12:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:12:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:12:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 9266 transitions. [2022-11-20 11:12:01,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6421344421344422 [2022-11-20 11:12:01,766 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 9266 transitions. [2022-11-20 11:12:01,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 9266 transitions. [2022-11-20 11:12:01,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:01,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 9266 transitions. [2022-11-20 11:12:01,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 250.43243243243242) internal successors, (9266), 37 states have internal predecessors, (9266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:01,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 390.0) internal successors, (14820), 38 states have internal predecessors, (14820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:01,826 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 390.0) internal successors, (14820), 38 states have internal predecessors, (14820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:01,827 INFO L175 Difference]: Start difference. First operand has 348 places, 387 transitions, 1072 flow. Second operand 37 states and 9266 transitions. [2022-11-20 11:12:01,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 648 transitions, 2539 flow [2022-11-20 11:12:01,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 648 transitions, 2485 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 11:12:01,844 INFO L231 Difference]: Finished difference. Result has 398 places, 442 transitions, 1474 flow [2022-11-20 11:12:01,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1474, PETRI_PLACES=398, PETRI_TRANSITIONS=442} [2022-11-20 11:12:01,848 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 56 predicate places. [2022-11-20 11:12:01,849 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 442 transitions, 1474 flow [2022-11-20 11:12:01,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 243.28571428571428) internal successors, (8515), 35 states have internal predecessors, (8515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:01,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:01,853 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:01,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:02,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:12:02,060 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:12:02,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1230363251, now seen corresponding path program 1 times [2022-11-20 11:12:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:02,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263763766] [2022-11-20 11:12:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:02,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:12:02,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:02,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263763766] [2022-11-20 11:12:02,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263763766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:02,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:02,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:02,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208103733] [2022-11-20 11:12:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:02,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:12:02,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:02,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:12:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:12:02,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-11-20 11:12:02,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 442 transitions, 1474 flow. Second operand has 4 states, 4 states have (on average 310.5) internal successors, (1242), 4 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:02,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:02,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-11-20 11:12:02,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:06,248 INFO L130 PetriNetUnfolder]: 2239/9294 cut-off events. [2022-11-20 11:12:06,248 INFO L131 PetriNetUnfolder]: For 944/944 co-relation queries the response was YES. [2022-11-20 11:12:06,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14257 conditions, 9294 events. 2239/9294 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 88153 event pairs, 1110 based on Foata normal form. 36/6300 useless extension candidates. Maximal degree in co-relation 13812. Up to 2287 conditions per place. [2022-11-20 11:12:06,342 INFO L137 encePairwiseOnDemand]: 377/390 looper letters, 86 selfloop transitions, 10 changer transitions 0/466 dead transitions. [2022-11-20 11:12:06,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 466 transitions, 1701 flow [2022-11-20 11:12:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:12:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:12:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1327 transitions. [2022-11-20 11:12:06,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8506410256410256 [2022-11-20 11:12:06,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1327 transitions. [2022-11-20 11:12:06,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1327 transitions. [2022-11-20 11:12:06,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:06,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1327 transitions. [2022-11-20 11:12:06,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.75) internal successors, (1327), 4 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:06,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:06,357 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:06,357 INFO L175 Difference]: Start difference. First operand has 398 places, 442 transitions, 1474 flow. Second operand 4 states and 1327 transitions. [2022-11-20 11:12:06,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 466 transitions, 1701 flow [2022-11-20 11:12:06,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 466 transitions, 1695 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:12:06,374 INFO L231 Difference]: Finished difference. Result has 400 places, 440 transitions, 1499 flow [2022-11-20 11:12:06,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1499, PETRI_PLACES=400, PETRI_TRANSITIONS=440} [2022-11-20 11:12:06,375 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 58 predicate places. [2022-11-20 11:12:06,376 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 440 transitions, 1499 flow [2022-11-20 11:12:06,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 310.5) internal successors, (1242), 4 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:06,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:06,377 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:06,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:12:06,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:12:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1909301833, now seen corresponding path program 2 times [2022-11-20 11:12:06,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:06,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707587003] [2022-11-20 11:12:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:06,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:06,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707587003] [2022-11-20 11:12:06,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707587003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:06,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559079399] [2022-11-20 11:12:06,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:06,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:06,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:06,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:06,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:12:07,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:12:07,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:07,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:12:07,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:07,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:08,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559079399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:08,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:08,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-20 11:12:08,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25508410] [2022-11-20 11:12:08,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:08,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:12:08,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:08,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:12:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:12:08,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 390 [2022-11-20 11:12:08,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 440 transitions, 1499 flow. Second operand has 32 states, 32 states have (on average 299.09375) internal successors, (9571), 32 states have internal predecessors, (9571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:08,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:08,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 390 [2022-11-20 11:12:08,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:16,069 INFO L130 PetriNetUnfolder]: 7385/18970 cut-off events. [2022-11-20 11:12:16,069 INFO L131 PetriNetUnfolder]: For 1085/1085 co-relation queries the response was YES. [2022-11-20 11:12:16,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30849 conditions, 18970 events. 7385/18970 cut-off events. For 1085/1085 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 181728 event pairs, 4709 based on Foata normal form. 4/11338 useless extension candidates. Maximal degree in co-relation 26900. Up to 9190 conditions per place. [2022-11-20 11:12:16,504 INFO L137 encePairwiseOnDemand]: 364/390 looper letters, 103 selfloop transitions, 99 changer transitions 0/490 dead transitions. [2022-11-20 11:12:16,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 490 transitions, 2038 flow [2022-11-20 11:12:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:12:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:12:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 8717 transitions. [2022-11-20 11:12:16,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7707338638373121 [2022-11-20 11:12:16,525 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 8717 transitions. [2022-11-20 11:12:16,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 8717 transitions. [2022-11-20 11:12:16,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:16,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 8717 transitions. [2022-11-20 11:12:16,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 300.58620689655174) internal successors, (8717), 29 states have internal predecessors, (8717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:16,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:16,570 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:16,571 INFO L175 Difference]: Start difference. First operand has 400 places, 440 transitions, 1499 flow. Second operand 29 states and 8717 transitions. [2022-11-20 11:12:16,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 490 transitions, 2038 flow [2022-11-20 11:12:16,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 490 transitions, 2024 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-20 11:12:16,588 INFO L231 Difference]: Finished difference. Result has 422 places, 444 transitions, 1754 flow [2022-11-20 11:12:16,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1754, PETRI_PLACES=422, PETRI_TRANSITIONS=444} [2022-11-20 11:12:16,590 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 80 predicate places. [2022-11-20 11:12:16,590 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 444 transitions, 1754 flow [2022-11-20 11:12:16,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 299.09375) internal successors, (9571), 32 states have internal predecessors, (9571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:16,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:16,594 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:16,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:16,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:16,802 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:12:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:16,802 INFO L85 PathProgramCache]: Analyzing trace with hash 767426956, now seen corresponding path program 1 times [2022-11-20 11:12:16,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:16,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050154733] [2022-11-20 11:12:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:16,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:12:16,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:16,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050154733] [2022-11-20 11:12:16,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050154733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:16,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:16,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:16,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072697217] [2022-11-20 11:12:16,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:16,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:12:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:12:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:12:16,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-11-20 11:12:16,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 444 transitions, 1754 flow. Second operand has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:16,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:16,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-11-20 11:12:16,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:18,819 INFO L130 PetriNetUnfolder]: 1264/5562 cut-off events. [2022-11-20 11:12:18,819 INFO L131 PetriNetUnfolder]: For 837/837 co-relation queries the response was YES. [2022-11-20 11:12:18,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8820 conditions, 5562 events. 1264/5562 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 44621 event pairs, 629 based on Foata normal form. 12/3854 useless extension candidates. Maximal degree in co-relation 7327. Up to 1408 conditions per place. [2022-11-20 11:12:18,864 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 82 selfloop transitions, 8 changer transitions 0/468 dead transitions. [2022-11-20 11:12:18,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 468 transitions, 1980 flow [2022-11-20 11:12:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:12:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:12:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1323 transitions. [2022-11-20 11:12:18,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8480769230769231 [2022-11-20 11:12:18,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1323 transitions. [2022-11-20 11:12:18,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1323 transitions. [2022-11-20 11:12:18,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:18,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1323 transitions. [2022-11-20 11:12:18,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:18,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:18,877 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:18,877 INFO L175 Difference]: Start difference. First operand has 422 places, 444 transitions, 1754 flow. Second operand 4 states and 1323 transitions. [2022-11-20 11:12:18,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 468 transitions, 1980 flow [2022-11-20 11:12:18,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 468 transitions, 1849 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-11-20 11:12:18,895 INFO L231 Difference]: Finished difference. Result has 413 places, 442 transitions, 1627 flow [2022-11-20 11:12:18,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1627, PETRI_PLACES=413, PETRI_TRANSITIONS=442} [2022-11-20 11:12:18,897 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 71 predicate places. [2022-11-20 11:12:18,897 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 442 transitions, 1627 flow [2022-11-20 11:12:18,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:18,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:18,898 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:18,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:12:18,898 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:12:18,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:18,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1979567264, now seen corresponding path program 1 times [2022-11-20 11:12:18,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:18,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95187616] [2022-11-20 11:12:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:18,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:20,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:20,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95187616] [2022-11-20 11:12:20,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95187616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:20,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954265914] [2022-11-20 11:12:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:20,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:20,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:20,016 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:20,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:12:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:12:20,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:20,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:12:20,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:12:20,585 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:12:20,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:12:20,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:12:20,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:12:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:20,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:21,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:12:21,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-20 11:12:21,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:12:21,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-20 11:12:21,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 11:12:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:21,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954265914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:21,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:21,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2022-11-20 11:12:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018697490] [2022-11-20 11:12:21,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:21,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:12:21,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:12:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1115, Unknown=13, NotChecked=0, Total=1260 [2022-11-20 11:12:21,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 390 [2022-11-20 11:12:21,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 442 transitions, 1627 flow. Second operand has 36 states, 36 states have (on average 243.38888888888889) internal successors, (8762), 36 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:21,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:21,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 390 [2022-11-20 11:12:21,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:32,958 INFO L130 PetriNetUnfolder]: 13912/33849 cut-off events. [2022-11-20 11:12:32,958 INFO L131 PetriNetUnfolder]: For 545/545 co-relation queries the response was YES. [2022-11-20 11:12:33,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53277 conditions, 33849 events. 13912/33849 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 344274 event pairs, 7769 based on Foata normal form. 0/22253 useless extension candidates. Maximal degree in co-relation 46579. Up to 10580 conditions per place. [2022-11-20 11:12:33,264 INFO L137 encePairwiseOnDemand]: 354/390 looper letters, 240 selfloop transitions, 53 changer transitions 0/519 dead transitions. [2022-11-20 11:12:33,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 519 transitions, 2409 flow [2022-11-20 11:12:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:12:33,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 11:12:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 6715 transitions. [2022-11-20 11:12:33,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.637701804368471 [2022-11-20 11:12:33,276 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 6715 transitions. [2022-11-20 11:12:33,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 6715 transitions. [2022-11-20 11:12:33,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:33,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 6715 transitions. [2022-11-20 11:12:33,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 248.7037037037037) internal successors, (6715), 27 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:33,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 390.0) internal successors, (10920), 28 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:33,314 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 390.0) internal successors, (10920), 28 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:33,314 INFO L175 Difference]: Start difference. First operand has 413 places, 442 transitions, 1627 flow. Second operand 27 states and 6715 transitions. [2022-11-20 11:12:33,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 519 transitions, 2409 flow [2022-11-20 11:12:33,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 519 transitions, 2392 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:12:33,333 INFO L231 Difference]: Finished difference. Result has 439 places, 445 transitions, 1769 flow [2022-11-20 11:12:33,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1769, PETRI_PLACES=439, PETRI_TRANSITIONS=445} [2022-11-20 11:12:33,340 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 97 predicate places. [2022-11-20 11:12:33,340 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 445 transitions, 1769 flow [2022-11-20 11:12:33,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 243.38888888888889) internal successors, (8762), 36 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:33,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:33,344 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:33,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:33,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:12:33,552 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:12:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash 462319179, now seen corresponding path program 1 times [2022-11-20 11:12:33,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:33,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428024738] [2022-11-20 11:12:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:33,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:12:33,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:33,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428024738] [2022-11-20 11:12:33,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428024738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:33,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:33,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:33,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838637456] [2022-11-20 11:12:33,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:33,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:12:33,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:12:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:12:33,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-11-20 11:12:33,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 445 transitions, 1769 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:33,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:33,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-11-20 11:12:33,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:35,628 INFO L130 PetriNetUnfolder]: 1337/5810 cut-off events. [2022-11-20 11:12:35,629 INFO L131 PetriNetUnfolder]: For 959/959 co-relation queries the response was YES. [2022-11-20 11:12:35,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9276 conditions, 5810 events. 1337/5810 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 46871 event pairs, 666 based on Foata normal form. 12/4016 useless extension candidates. Maximal degree in co-relation 7858. Up to 1548 conditions per place. [2022-11-20 11:12:35,677 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 81 selfloop transitions, 8 changer transitions 0/469 dead transitions. [2022-11-20 11:12:35,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 469 transitions, 1996 flow [2022-11-20 11:12:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:12:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:12:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1319 transitions. [2022-11-20 11:12:35,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8455128205128205 [2022-11-20 11:12:35,680 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1319 transitions. [2022-11-20 11:12:35,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1319 transitions. [2022-11-20 11:12:35,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:35,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1319 transitions. [2022-11-20 11:12:35,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 329.75) internal successors, (1319), 4 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:35,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:35,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:35,688 INFO L175 Difference]: Start difference. First operand has 439 places, 445 transitions, 1769 flow. Second operand 4 states and 1319 transitions. [2022-11-20 11:12:35,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 469 transitions, 1996 flow [2022-11-20 11:12:35,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 469 transitions, 1925 flow, removed 1 selfloop flow, removed 20 redundant places. [2022-11-20 11:12:35,706 INFO L231 Difference]: Finished difference. Result has 422 places, 445 transitions, 1725 flow [2022-11-20 11:12:35,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1725, PETRI_PLACES=422, PETRI_TRANSITIONS=445} [2022-11-20 11:12:35,707 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 80 predicate places. [2022-11-20 11:12:35,708 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 445 transitions, 1725 flow [2022-11-20 11:12:35,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:35,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:35,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:35,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:12:35,709 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-20 11:12:35,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:35,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2137261565, now seen corresponding path program 1 times [2022-11-20 11:12:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:35,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521922126] [2022-11-20 11:12:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:39,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:39,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521922126] [2022-11-20 11:12:39,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521922126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:39,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541556243] [2022-11-20 11:12:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:39,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:39,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:39,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:39,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e681126d-d39f-4da4-9d70-f22f5f30da03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:12:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:39,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-20 11:12:39,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:39,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:12:39,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:12:40,000 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:12:40,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:12:40,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:12:40,400 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:12:40,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:12:40,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:12:40,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:12:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:41,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:43,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2022-11-20 11:12:43,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-20 11:12:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:43,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541556243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:43,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:43,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 22, 22] total 66 [2022-11-20 11:12:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536091987] [2022-11-20 11:12:43,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:43,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-20 11:12:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:43,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-20 11:12:43,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=4138, Unknown=2, NotChecked=0, Total=4422 [2022-11-20 11:12:43,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 390 [2022-11-20 11:12:43,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 445 transitions, 1725 flow. Second operand has 67 states, 67 states have (on average 141.28358208955223) internal successors, (9466), 67 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:43,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 390 [2022-11-20 11:12:43,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand