./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro --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 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 --- 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-8393723 [2022-11-18 19:48:50,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:48:50,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:48:50,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:48:50,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:48:50,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:48:50,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:48:50,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:48:50,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:48:50,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:48:50,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:48:50,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:48:50,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:48:50,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:48:50,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:48:50,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:48:50,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:48:50,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:48:50,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:48:50,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:48:50,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:48:50,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:48:50,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:48:50,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:48:50,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:48:50,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:48:50,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:48:50,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:48:50,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:48:50,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:48:50,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:48:50,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:48:50,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:48:50,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:48:50,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:48:50,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:48:50,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:48:50,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:48:50,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:48:50,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:48:50,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:48:50,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:48:50,299 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:48:50,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:48:50,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:48:50,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:48:50,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:48:50,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:48:50,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:48:50,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:48:50,306 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:48:50,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:48:50,308 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:48:50,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:48:50,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:48:50,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:48:50,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:48:50,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:48:50,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:48:50,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:48:50,310 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:48:50,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:48:50,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:48:50,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:48:50,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:48:50,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:48:50,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:48:50,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:48:50,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:48:50,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:48:50,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:48:50,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:48:50,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:48:50,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:48:50,313 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:48:50,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:48:50,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:48:50,314 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_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 [2022-11-18 19:48:50,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:48:50,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:48:50,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:48:50,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:48:50,650 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:48:50,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-18 19:48:50,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/data/d4248c3b3/92fa567f5bd54c16a2ac9867890fe181/FLAGdff7c8b8d [2022-11-18 19:48:51,311 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:48:51,311 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2022-11-18 19:48:51,319 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/data/d4248c3b3/92fa567f5bd54c16a2ac9867890fe181/FLAGdff7c8b8d [2022-11-18 19:48:51,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/data/d4248c3b3/92fa567f5bd54c16a2ac9867890fe181 [2022-11-18 19:48:51,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:48:51,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:48:51,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:48:51,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:48:51,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:48:51,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:48:51" (1/1) ... [2022-11-18 19:48:51,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152d9051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:51, skipping insertion in model container [2022-11-18 19:48:51,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:48:51" (1/1) ... [2022-11-18 19:48:51,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:48:51,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:48:51,997 WARN L234 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_92845efe-1df7-4c02-affc-bb4f261bf585/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-18 19:48:52,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:48:52,038 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:48:52,096 WARN L234 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_92845efe-1df7-4c02-affc-bb4f261bf585/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c[2865,2878] [2022-11-18 19:48:52,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:48:52,124 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:48:52,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52 WrapperNode [2022-11-18 19:48:52,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:48:52,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:48:52,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:48:52,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:48:52,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,217 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 333 [2022-11-18 19:48:52,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:48:52,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:48:52,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:48:52,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:48:52,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:48:52,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:48:52,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:48:52,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:48:52,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (1/1) ... [2022-11-18 19:48:52,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:48:52,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:52,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:48:52,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:48:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:48:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:48:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:48:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:48:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:48:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:48:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:48:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:48:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:48:52,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:48:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:48:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:48:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:48:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:48:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:48:52,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:48:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:48:52,417 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:48:52,640 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:48:52,643 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:48:53,437 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:48:54,118 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:48:54,119 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-18 19:48:54,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:48:54 BoogieIcfgContainer [2022-11-18 19:48:54,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:48:54,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:48:54,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:48:54,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:48:54,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:48:51" (1/3) ... [2022-11-18 19:48:54,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa77acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:48:54, skipping insertion in model container [2022-11-18 19:48:54,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:52" (2/3) ... [2022-11-18 19:48:54,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa77acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:48:54, skipping insertion in model container [2022-11-18 19:48:54,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:48:54" (3/3) ... [2022-11-18 19:48:54,135 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2022-11-18 19:48:54,147 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:48:54,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:48:54,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-18 19:48:54,159 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:48:54,353 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:48:54,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 306 transitions, 636 flow [2022-11-18 19:48:54,544 INFO L130 PetriNetUnfolder]: 25/303 cut-off events. [2022-11-18 19:48:54,544 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:48:54,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 25/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 596 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 232. Up to 2 conditions per place. [2022-11-18 19:48:54,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 306 transitions, 636 flow [2022-11-18 19:48:54,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 282 transitions, 579 flow [2022-11-18 19:48:54,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:48:54,581 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;@11df677b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:48:54,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-11-18 19:48:54,596 INFO L130 PetriNetUnfolder]: 3/68 cut-off events. [2022-11-18 19:48:54,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:48:54,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:54,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:54,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-18 19:48:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:54,604 INFO L85 PathProgramCache]: Analyzing trace with hash 362630567, now seen corresponding path program 1 times [2022-11-18 19:48:54,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:54,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022906594] [2022-11-18 19:48:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:54,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:55,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:55,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022906594] [2022-11-18 19:48:55,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022906594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:55,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:55,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:48:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044916247] [2022-11-18 19:48:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:55,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:48:55,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:55,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:48:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:48:55,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-11-18 19:48:55,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 282 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:55,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-11-18 19:48:55,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:57,424 INFO L130 PetriNetUnfolder]: 1085/5053 cut-off events. [2022-11-18 19:48:57,425 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2022-11-18 19:48:57,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6865 conditions, 5053 events. 1085/5053 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 58309 event pairs, 910 based on Foata normal form. 758/4093 useless extension candidates. Maximal degree in co-relation 2983. Up to 781 conditions per place. [2022-11-18 19:48:57,493 INFO L137 encePairwiseOnDemand]: 271/306 looper letters, 72 selfloop transitions, 9 changer transitions 5/297 dead transitions. [2022-11-18 19:48:57,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 297 transitions, 786 flow [2022-11-18 19:48:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:48:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1310 transitions. [2022-11-18 19:48:57,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8562091503267973 [2022-11-18 19:48:57,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1310 transitions. [2022-11-18 19:48:57,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1310 transitions. [2022-11-18 19:48:57,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:57,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1310 transitions. [2022-11-18 19:48:57,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,539 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,541 INFO L175 Difference]: Start difference. First operand has 268 places, 282 transitions, 579 flow. Second operand 5 states and 1310 transitions. [2022-11-18 19:48:57,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 297 transitions, 786 flow [2022-11-18 19:48:57,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 297 transitions, 768 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:48:57,556 INFO L231 Difference]: Finished difference. Result has 264 places, 262 transitions, 583 flow [2022-11-18 19:48:57,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=583, PETRI_PLACES=264, PETRI_TRANSITIONS=262} [2022-11-18 19:48:57,567 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, -4 predicate places. [2022-11-18 19:48:57,568 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 262 transitions, 583 flow [2022-11-18 19:48:57,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:57,570 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] [2022-11-18 19:48:57,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:48:57,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-18 19:48:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash -156937505, now seen corresponding path program 1 times [2022-11-18 19:48:57,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:57,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837718922] [2022-11-18 19:48:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:57,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837718922] [2022-11-18 19:48:57,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837718922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035051655] [2022-11-18 19:48:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:57,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:57,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:57,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:57,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:48:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:58,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:48:58,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:58,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:48:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:58,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035051655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:48:58,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:48:58,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:48:58,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485768239] [2022-11-18 19:48:58,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:58,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:48:58,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:58,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:48:58,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:48:58,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-11-18 19:48:58,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 262 transitions, 583 flow. Second operand has 12 states, 12 states have (on average 239.66666666666666) internal successors, (2876), 12 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:58,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:58,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-11-18 19:48:58,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:02,828 INFO L130 PetriNetUnfolder]: 2711/12512 cut-off events. [2022-11-18 19:49:02,830 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-18 19:49:02,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16836 conditions, 12512 events. 2711/12512 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 161701 event pairs, 2275 based on Foata normal form. 6/8248 useless extension candidates. Maximal degree in co-relation 13264. Up to 774 conditions per place. [2022-11-18 19:49:02,987 INFO L137 encePairwiseOnDemand]: 291/306 looper letters, 156 selfloop transitions, 40 changer transitions 0/407 dead transitions. [2022-11-18 19:49:02,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 407 transitions, 1339 flow [2022-11-18 19:49:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:49:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:49:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4468 transitions. [2022-11-18 19:49:02,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8111837327523602 [2022-11-18 19:49:02,998 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4468 transitions. [2022-11-18 19:49:02,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4468 transitions. [2022-11-18 19:49:03,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:03,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4468 transitions. [2022-11-18 19:49:03,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 248.22222222222223) internal successors, (4468), 18 states have internal predecessors, (4468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,027 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,027 INFO L175 Difference]: Start difference. First operand has 264 places, 262 transitions, 583 flow. Second operand 18 states and 4468 transitions. [2022-11-18 19:49:03,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 407 transitions, 1339 flow [2022-11-18 19:49:03,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 407 transitions, 1334 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:49:03,036 INFO L231 Difference]: Finished difference. Result has 279 places, 289 transitions, 816 flow [2022-11-18 19:49:03,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=816, PETRI_PLACES=279, PETRI_TRANSITIONS=289} [2022-11-18 19:49:03,038 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 11 predicate places. [2022-11-18 19:49:03,038 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 289 transitions, 816 flow [2022-11-18 19:49:03,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 239.66666666666666) internal successors, (2876), 12 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:03,041 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] [2022-11-18 19:49:03,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:03,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:03,258 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-18 19:49:03,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:03,259 INFO L85 PathProgramCache]: Analyzing trace with hash -570094258, now seen corresponding path program 1 times [2022-11-18 19:49:03,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:03,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692667522] [2022-11-18 19:49:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:03,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:03,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:03,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692667522] [2022-11-18 19:49:03,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692667522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:03,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60685625] [2022-11-18 19:49:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:03,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:03,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:03,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:49:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:03,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:49:03,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:03,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:49:03,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60685625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:03,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:49:03,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:49:03,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267409417] [2022-11-18 19:49:03,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:03,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:49:03,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:49:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:49:03,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-11-18 19:49:03,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 289 transitions, 816 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:03,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-11-18 19:49:03,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:07,247 INFO L130 PetriNetUnfolder]: 2711/12504 cut-off events. [2022-11-18 19:49:07,247 INFO L131 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2022-11-18 19:49:07,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 12504 events. 2711/12504 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 161818 event pairs, 2275 based on Foata normal form. 8/8242 useless extension candidates. Maximal degree in co-relation 13468. Up to 3052 conditions per place. [2022-11-18 19:49:07,361 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 73 selfloop transitions, 27 changer transitions 0/311 dead transitions. [2022-11-18 19:49:07,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 1032 flow [2022-11-18 19:49:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:49:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:49:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1740 transitions. [2022-11-18 19:49:07,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8123249299719888 [2022-11-18 19:49:07,367 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1740 transitions. [2022-11-18 19:49:07,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1740 transitions. [2022-11-18 19:49:07,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:07,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1740 transitions. [2022-11-18 19:49:07,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 248.57142857142858) internal successors, (1740), 7 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,381 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,381 INFO L175 Difference]: Start difference. First operand has 279 places, 289 transitions, 816 flow. Second operand 7 states and 1740 transitions. [2022-11-18 19:49:07,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 1032 flow [2022-11-18 19:49:07,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 311 transitions, 958 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-18 19:49:07,397 INFO L231 Difference]: Finished difference. Result has 274 places, 281 transitions, 742 flow [2022-11-18 19:49:07,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=274, PETRI_TRANSITIONS=281} [2022-11-18 19:49:07,400 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 6 predicate places. [2022-11-18 19:49:07,401 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 281 transitions, 742 flow [2022-11-18 19:49:07,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:07,402 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] [2022-11-18 19:49:07,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:49:07,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:07,609 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-18 19:49:07,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash 451955623, now seen corresponding path program 2 times [2022-11-18 19:49:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:07,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576607807] [2022-11-18 19:49:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:07,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576607807] [2022-11-18 19:49:07,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576607807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410072671] [2022-11-18 19:49:07,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:49:07,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:07,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:07,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:08,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:49:08,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:49:08,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:08,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:49:08,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:49:08,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:49:08,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410072671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:08,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:08,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 19:49:08,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740916029] [2022-11-18 19:49:08,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:08,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:49:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:08,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:49:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:49:08,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-11-18 19:49:08,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 281 transitions, 742 flow. Second operand has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:08,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:08,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-11-18 19:49:08,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:16,360 INFO L130 PetriNetUnfolder]: 7078/25163 cut-off events. [2022-11-18 19:49:16,361 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2022-11-18 19:49:16,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35972 conditions, 25163 events. 7078/25163 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 333598 event pairs, 5509 based on Foata normal form. 4/15626 useless extension candidates. Maximal degree in co-relation 30534. Up to 1422 conditions per place. [2022-11-18 19:49:16,622 INFO L137 encePairwiseOnDemand]: 286/306 looper letters, 247 selfloop transitions, 65 changer transitions 0/503 dead transitions. [2022-11-18 19:49:16,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 503 transitions, 1905 flow [2022-11-18 19:49:16,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 19:49:16,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 19:49:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10949 transitions. [2022-11-18 19:49:16,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7302254235027344 [2022-11-18 19:49:16,649 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10949 transitions. [2022-11-18 19:49:16,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10949 transitions. [2022-11-18 19:49:16,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:16,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10949 transitions. [2022-11-18 19:49:16,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 223.44897959183675) internal successors, (10949), 49 states have internal predecessors, (10949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 306.0) internal successors, (15300), 50 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,735 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 306.0) internal successors, (15300), 50 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,735 INFO L175 Difference]: Start difference. First operand has 274 places, 281 transitions, 742 flow. Second operand 49 states and 10949 transitions. [2022-11-18 19:49:16,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 503 transitions, 1905 flow [2022-11-18 19:49:16,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 503 transitions, 1862 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:49:16,748 INFO L231 Difference]: Finished difference. Result has 320 places, 306 transitions, 957 flow [2022-11-18 19:49:16,749 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=957, PETRI_PLACES=320, PETRI_TRANSITIONS=306} [2022-11-18 19:49:16,750 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 52 predicate places. [2022-11-18 19:49:16,751 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 306 transitions, 957 flow [2022-11-18 19:49:16,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:16,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:16,753 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] [2022-11-18 19:49:16,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:16,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92845efe-1df7-4c02-affc-bb4f261bf585/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 19:49:16,961 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-18 19:49:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash -425379176, now seen corresponding path program 1 times [2022-11-18 19:49:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:16,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998909854] [2022-11-18 19:49:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:16,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:17,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:17,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998909854] [2022-11-18 19:49:17,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998909854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:17,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:17,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:49:17,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988302337] [2022-11-18 19:49:17,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:17,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:17,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:17,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:17,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:17,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 306 [2022-11-18 19:49:17,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 306 transitions, 957 flow. Second operand has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:17,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:17,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 306 [2022-11-18 19:49:17,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:28,424 INFO L130 PetriNetUnfolder]: 13609/46600 cut-off events. [2022-11-18 19:49:28,425 INFO L131 PetriNetUnfolder]: For 1217/1308 co-relation queries the response was YES. [2022-11-18 19:49:28,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67560 conditions, 46600 events. 13609/46600 cut-off events. For 1217/1308 co-relation queries the response was YES. Maximal size of possible extension queue 1960. Compared 665681 event pairs, 10633 based on Foata normal form. 0/30206 useless extension candidates. Maximal degree in co-relation 57909. Up to 14321 conditions per place. [2022-11-18 19:49:28,909 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 140 selfloop transitions, 22 changer transitions 0/371 dead transitions. [2022-11-18 19:49:28,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 371 transitions, 1516 flow [2022-11-18 19:49:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:49:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:49:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2358 transitions. [2022-11-18 19:49:28,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705882352941177 [2022-11-18 19:49:28,916 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2358 transitions. [2022-11-18 19:49:28,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2358 transitions. [2022-11-18 19:49:28,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:28,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2358 transitions. [2022-11-18 19:49:28,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 235.8) internal successors, (2358), 10 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:28,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:28,929 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:28,930 INFO L175 Difference]: Start difference. First operand has 320 places, 306 transitions, 957 flow. Second operand 10 states and 2358 transitions. [2022-11-18 19:49:28,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 371 transitions, 1516 flow [2022-11-18 19:49:28,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 371 transitions, 1409 flow, removed 13 selfloop flow, removed 15 redundant places. [2022-11-18 19:49:28,939 INFO L231 Difference]: Finished difference. Result has 317 places, 308 transitions, 936 flow [2022-11-18 19:49:28,940 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=936, PETRI_PLACES=317, PETRI_TRANSITIONS=308} [2022-11-18 19:49:28,943 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 49 predicate places. [2022-11-18 19:49:28,943 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 308 transitions, 936 flow [2022-11-18 19:49:28,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:28,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:28,944 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] [2022-11-18 19:49:28,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:49:28,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-18 19:49:28,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash 32746338, now seen corresponding path program 1 times [2022-11-18 19:49:28,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:28,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174060463] [2022-11-18 19:49:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:28,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:29,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:29,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174060463] [2022-11-18 19:49:29,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174060463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:29,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:29,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:49:29,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426857692] [2022-11-18 19:49:29,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:29,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:49:29,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:29,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:49:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:49:29,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 306 [2022-11-18 19:49:29,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 308 transitions, 936 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:29,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:29,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 306 [2022-11-18 19:49:29,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:42,423 INFO L130 PetriNetUnfolder]: 18656/58101 cut-off events. [2022-11-18 19:49:42,423 INFO L131 PetriNetUnfolder]: For 3284/3494 co-relation queries the response was YES. [2022-11-18 19:49:42,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87530 conditions, 58101 events. 18656/58101 cut-off events. For 3284/3494 co-relation queries the response was YES. Maximal size of possible extension queue 1727. Compared 799132 event pairs, 14441 based on Foata normal form. 210/38914 useless extension candidates. Maximal degree in co-relation 81305. Up to 24080 conditions per place. [2022-11-18 19:49:43,077 INFO L137 encePairwiseOnDemand]: 292/306 looper letters, 160 selfloop transitions, 23 changer transitions 2/375 dead transitions. [2022-11-18 19:49:43,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 375 transitions, 1521 flow [2022-11-18 19:49:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:49:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:49:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2276 transitions. [2022-11-18 19:49:43,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6761734997029115 [2022-11-18 19:49:43,085 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2276 transitions. [2022-11-18 19:49:43,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2276 transitions. [2022-11-18 19:49:43,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:43,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2276 transitions. [2022-11-18 19:49:43,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 206.9090909090909) internal successors, (2276), 11 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:43,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:43,099 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:43,099 INFO L175 Difference]: Start difference. First operand has 317 places, 308 transitions, 936 flow. Second operand 11 states and 2276 transitions. [2022-11-18 19:49:43,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 375 transitions, 1521 flow [2022-11-18 19:49:43,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 375 transitions, 1497 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:49:43,118 INFO L231 Difference]: Finished difference. Result has 328 places, 312 transitions, 988 flow [2022-11-18 19:49:43,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=988, PETRI_PLACES=328, PETRI_TRANSITIONS=312} [2022-11-18 19:49:43,119 INFO L288 CegarLoopForPetriNet]: 268 programPoint places, 60 predicate places. [2022-11-18 19:49:43,119 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 312 transitions, 988 flow [2022-11-18 19:49:43,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:43,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:43,121 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] [2022-11-18 19:49:43,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:49:43,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-18 19:49:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:43,122 INFO L85 PathProgramCache]: Analyzing trace with hash -570715185, now seen corresponding path program 1 times [2022-11-18 19:49:43,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:43,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776338415] [2022-11-18 19:49:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:43,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:49:43,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:43,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776338415] [2022-11-18 19:49:43,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776338415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:43,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:43,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:49:43,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538260773] [2022-11-18 19:49:43,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:43,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:49:43,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:43,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:49:43,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:49:43,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 306 [2022-11-18 19:49:43,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 312 transitions, 988 flow. Second operand has 12 states, 12 states have (on average 202.41666666666666) internal successors, (2429), 12 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:43,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:43,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 306 [2022-11-18 19:49:43,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand