./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:06:11,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:06:11,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:06:11,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:06:11,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:06:11,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:06:11,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:06:11,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:06:11,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:06:11,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:06:11,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:06:11,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:06:11,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:06:11,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:06:11,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:06:11,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:06:11,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:06:11,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:06:11,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:06:11,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:06:11,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:06:11,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:06:11,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:06:11,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:06:11,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:06:11,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:06:11,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:06:11,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:06:11,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:06:11,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:06:11,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:06:11,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:06:11,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:06:11,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:06:11,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:06:11,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:06:11,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:06:11,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:06:11,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:06:11,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:06:11,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:06:11,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 18:06:11,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:06:11,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:06:11,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:06:11,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:06:11,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:06:11,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:06:11,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:06:11,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:06:11,088 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:06:11,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:06:11,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:06:11,088 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:06:11,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:06:11,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:06:11,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:06:11,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:06:11,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:06:11,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:06:11,089 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 18:06:11,090 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:06:11,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:06:11,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:06:11,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:06:11,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:06:11,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:06:11,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:06:11,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:06:11,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:06:11,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:06:11,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:06:11,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:06:11,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:06:11,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:06:11,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:06:11,093 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:06:11,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:06:11,093 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:06:11,093 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2022-12-13 18:06:11,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:06:11,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:06:11,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:06:11,305 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:06:11,305 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:06:11,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-12-13 18:06:13,935 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:06:14,071 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:06:14,071 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-12-13 18:06:14,076 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/data/21daae044/e7819af477a24d248dd1a9e9faa5257f/FLAG3a2246a3e [2022-12-13 18:06:14,088 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/data/21daae044/e7819af477a24d248dd1a9e9faa5257f [2022-12-13 18:06:14,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:06:14,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:06:14,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:06:14,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:06:14,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:06:14,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f602357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14, skipping insertion in model container [2022-12-13 18:06:14,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:06:14,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:06:14,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:14,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:14,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:14,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:14,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:14,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:14,250 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-12-13 18:06:14,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:06:14,262 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:06:14,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:14,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:14,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:14,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:14,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:14,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:14,285 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-12-13 18:06:14,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:06:14,300 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:06:14,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14 WrapperNode [2022-12-13 18:06:14,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:06:14,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:06:14,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:06:14,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:06:14,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,339 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 418 [2022-12-13 18:06:14,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:06:14,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:06:14,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:06:14,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:06:14,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:06:14,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:06:14,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:06:14,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:06:14,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (1/1) ... [2022-12-13 18:06:14,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:06:14,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:06:14,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:06:14,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:06:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:06:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 18:06:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:06:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:06:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:06:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 18:06:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 18:06:14,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 18:06:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 18:06:14,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 18:06:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 18:06:14,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 18:06:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:06:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:06:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:06:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 18:06:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:06:14,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:06:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:06:14,442 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:06:14,541 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:06:14,543 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:06:15,095 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:06:15,384 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:06:15,384 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 18:06:15,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:06:15 BoogieIcfgContainer [2022-12-13 18:06:15,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:06:15,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:06:15,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:06:15,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:06:15,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:06:14" (1/3) ... [2022-12-13 18:06:15,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb1c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:06:15, skipping insertion in model container [2022-12-13 18:06:15,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:14" (2/3) ... [2022-12-13 18:06:15,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb1c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:06:15, skipping insertion in model container [2022-12-13 18:06:15,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:06:15" (3/3) ... [2022-12-13 18:06:15,394 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-12-13 18:06:15,401 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:06:15,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:06:15,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-12-13 18:06:15,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:06:15,547 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 18:06:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 397 transitions, 818 flow [2022-12-13 18:06:15,674 INFO L130 PetriNetUnfolder]: 35/394 cut-off events. [2022-12-13 18:06:15,674 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 18:06:15,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 394 events. 35/394 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 889 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 316. Up to 2 conditions per place. [2022-12-13 18:06:15,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 397 transitions, 818 flow [2022-12-13 18:06:15,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 373 transitions, 761 flow [2022-12-13 18:06:15,695 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:06:15,705 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 373 transitions, 761 flow [2022-12-13 18:06:15,708 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 373 transitions, 761 flow [2022-12-13 18:06:15,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 373 transitions, 761 flow [2022-12-13 18:06:15,777 INFO L130 PetriNetUnfolder]: 34/373 cut-off events. [2022-12-13 18:06:15,777 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:06:15,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 373 events. 34/373 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 850 event pairs, 0 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 316. Up to 2 conditions per place. [2022-12-13 18:06:15,786 INFO L119 LiptonReduction]: Number of co-enabled transitions 19278 [2022-12-13 18:06:43,752 INFO L134 LiptonReduction]: Checked pairs total: 22699 [2022-12-13 18:06:43,753 INFO L136 LiptonReduction]: Total number of compositions: 455 [2022-12-13 18:06:43,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:06:43,772 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;@443ecd0d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:06:43,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-12-13 18:06:43,775 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 18:06:43,775 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:06:43,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:43,776 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:06:43,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:06:43,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:43,780 INFO L85 PathProgramCache]: Analyzing trace with hash 63935, now seen corresponding path program 1 times [2022-12-13 18:06:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:43,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137960801] [2022-12-13 18:06:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:43,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:06:43,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:43,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137960801] [2022-12-13 18:06:43,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137960801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:43,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:43,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:06:43,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909808625] [2022-12-13 18:06:43,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:06:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:06:44,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:06:44,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 852 [2022-12-13 18:06:44,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:44,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:44,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 852 [2022-12-13 18:06:44,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:49,254 INFO L130 PetriNetUnfolder]: 23507/30843 cut-off events. [2022-12-13 18:06:49,254 INFO L131 PetriNetUnfolder]: For 929/929 co-relation queries the response was YES. [2022-12-13 18:06:49,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62640 conditions, 30843 events. 23507/30843 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 1849. Compared 180157 event pairs, 15681 based on Foata normal form. 0/12131 useless extension candidates. Maximal degree in co-relation 29288. Up to 15417 conditions per place. [2022-12-13 18:06:49,379 INFO L137 encePairwiseOnDemand]: 832/852 looper letters, 105 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2022-12-13 18:06:49,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 480 flow [2022-12-13 18:06:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:06:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:06:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1156 transitions. [2022-12-13 18:06:49,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4522691705790297 [2022-12-13 18:06:49,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1156 transitions. [2022-12-13 18:06:49,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1156 transitions. [2022-12-13 18:06:49,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:49,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1156 transitions. [2022-12-13 18:06:49,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 385.3333333333333) internal successors, (1156), 3 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:49,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:49,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:49,424 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 155 flow. Second operand 3 states and 1156 transitions. [2022-12-13 18:06:49,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 480 flow [2022-12-13 18:06:49,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 114 transitions, 462 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 18:06:49,460 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 186 flow [2022-12-13 18:06:49,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2022-12-13 18:06:49,465 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2022-12-13 18:06:49,465 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 186 flow [2022-12-13 18:06:49,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:49,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:49,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:06:49,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:06:49,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:06:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1986090, now seen corresponding path program 1 times [2022-12-13 18:06:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:49,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131371965] [2022-12-13 18:06:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:06:49,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131371965] [2022-12-13 18:06:49,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131371965] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:06:49,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300319512] [2022-12-13 18:06:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:49,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:06:49,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:06:49,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:06:49,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:06:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:49,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:06:49,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:06:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:06:49,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:06:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:06:49,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300319512] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:06:49,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:06:49,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 18:06:49,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229329512] [2022-12-13 18:06:49,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:06:49,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:06:49,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:06:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:06:49,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 852 [2022-12-13 18:06:49,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 342.14285714285717) internal successors, (2395), 7 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:49,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:49,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 852 [2022-12-13 18:06:49,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:01,336 INFO L130 PetriNetUnfolder]: 58730/77061 cut-off events. [2022-12-13 18:07:01,336 INFO L131 PetriNetUnfolder]: For 429/429 co-relation queries the response was YES. [2022-12-13 18:07:01,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155847 conditions, 77061 events. 58730/77061 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 4131. Compared 494487 event pairs, 39189 based on Foata normal form. 0/30364 useless extension candidates. Maximal degree in co-relation 124519. Up to 15423 conditions per place. [2022-12-13 18:07:01,646 INFO L137 encePairwiseOnDemand]: 840/852 looper letters, 243 selfloop transitions, 33 changer transitions 0/279 dead transitions. [2022-12-13 18:07:01,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 279 transitions, 1246 flow [2022-12-13 18:07:01,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:07:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:07:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2672 transitions. [2022-12-13 18:07:01,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44802146210596916 [2022-12-13 18:07:01,653 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2672 transitions. [2022-12-13 18:07:01,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2672 transitions. [2022-12-13 18:07:01,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:01,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2672 transitions. [2022-12-13 18:07:01,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 381.7142857142857) internal successors, (2672), 7 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:01,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 852.0) internal successors, (6816), 8 states have internal predecessors, (6816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:01,672 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 852.0) internal successors, (6816), 8 states have internal predecessors, (6816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:01,673 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 186 flow. Second operand 7 states and 2672 transitions. [2022-12-13 18:07:01,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 279 transitions, 1246 flow [2022-12-13 18:07:01,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 279 transitions, 1222 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:07:01,678 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 393 flow [2022-12-13 18:07:01,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2022-12-13 18:07:01,678 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 0 predicate places. [2022-12-13 18:07:01,679 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 393 flow [2022-12-13 18:07:01,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 342.14285714285717) internal successors, (2395), 7 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:01,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:01,680 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 18:07:01,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:07:01,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:01,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:07:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash 61572894, now seen corresponding path program 1 times [2022-12-13 18:07:01,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:01,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954360176] [2022-12-13 18:07:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:01,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:07:02,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:02,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954360176] [2022-12-13 18:07:02,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954360176] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:02,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:02,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:07:02,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689825558] [2022-12-13 18:07:02,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:02,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:07:02,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:02,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:07:02,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:07:02,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 852 [2022-12-13 18:07:02,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:02,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:02,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 852 [2022-12-13 18:07:02,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:13,132 INFO L130 PetriNetUnfolder]: 58841/77169 cut-off events. [2022-12-13 18:07:13,132 INFO L131 PetriNetUnfolder]: For 434/434 co-relation queries the response was YES. [2022-12-13 18:07:13,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156102 conditions, 77169 events. 58841/77169 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 4205. Compared 496497 event pairs, 39225 based on Foata normal form. 4/30321 useless extension candidates. Maximal degree in co-relation 93633. Up to 77089 conditions per place. [2022-12-13 18:07:13,399 INFO L137 encePairwiseOnDemand]: 848/852 looper letters, 75 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2022-12-13 18:07:13,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 464 flow [2022-12-13 18:07:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:07:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:07:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2022-12-13 18:07:13,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42331768388106417 [2022-12-13 18:07:13,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2022-12-13 18:07:13,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2022-12-13 18:07:13,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:13,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2022-12-13 18:07:13,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:13,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:13,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:13,409 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 393 flow. Second operand 3 states and 1082 transitions. [2022-12-13 18:07:13,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 464 flow [2022-12-13 18:07:13,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 434 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 18:07:13,412 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 284 flow [2022-12-13 18:07:13,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2022-12-13 18:07:13,412 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2022-12-13 18:07:13,413 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 284 flow [2022-12-13 18:07:13,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:13,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:13,413 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:07:13,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:07:13,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:07:13,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1910840377, now seen corresponding path program 1 times [2022-12-13 18:07:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:13,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746720737] [2022-12-13 18:07:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:13,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:13,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:13,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746720737] [2022-12-13 18:07:13,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746720737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:13,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:13,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:07:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743181845] [2022-12-13 18:07:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:13,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:07:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:07:13,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:07:13,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 852 [2022-12-13 18:07:13,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:13,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:13,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 852 [2022-12-13 18:07:13,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:34,816 INFO L130 PetriNetUnfolder]: 117521/154155 cut-off events. [2022-12-13 18:07:34,816 INFO L131 PetriNetUnfolder]: For 870/870 co-relation queries the response was YES. [2022-12-13 18:07:35,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311745 conditions, 154155 events. 117521/154155 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 8028. Compared 1057087 event pairs, 78405 based on Foata normal form. 0/60674 useless extension candidates. Maximal degree in co-relation 311733. Up to 77056 conditions per place. [2022-12-13 18:07:35,415 INFO L137 encePairwiseOnDemand]: 848/852 looper letters, 129 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-12-13 18:07:35,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 134 transitions, 706 flow [2022-12-13 18:07:35,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:07:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:07:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1146 transitions. [2022-12-13 18:07:35,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44835680751173707 [2022-12-13 18:07:35,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1146 transitions. [2022-12-13 18:07:35,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1146 transitions. [2022-12-13 18:07:35,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:35,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1146 transitions. [2022-12-13 18:07:35,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.0) internal successors, (1146), 3 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:35,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:35,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:35,425 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 284 flow. Second operand 3 states and 1146 transitions. [2022-12-13 18:07:35,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 134 transitions, 706 flow [2022-12-13 18:07:35,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 134 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:07:35,428 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 297 flow [2022-12-13 18:07:35,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2022-12-13 18:07:35,429 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2022-12-13 18:07:35,429 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 297 flow [2022-12-13 18:07:35,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:35,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:35,430 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 18:07:35,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:07:35,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:07:35,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash -957858689, now seen corresponding path program 2 times [2022-12-13 18:07:35,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:35,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448693235] [2022-12-13 18:07:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:35,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:35,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448693235] [2022-12-13 18:07:35,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448693235] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:35,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485148407] [2022-12-13 18:07:35,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:07:35,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:35,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:35,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:35,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:07:35,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:07:35,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:07:35,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:07:35,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:07:35,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:07:35,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485148407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:35,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:07:35,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 18:07:35,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380078816] [2022-12-13 18:07:35,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:35,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:07:35,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:35,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:07:35,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:07:35,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 852 [2022-12-13 18:07:35,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:35,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:35,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 852 [2022-12-13 18:07:35,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:56,817 INFO L130 PetriNetUnfolder]: 117671/154304 cut-off events. [2022-12-13 18:07:56,817 INFO L131 PetriNetUnfolder]: For 875/875 co-relation queries the response was YES. [2022-12-13 18:07:57,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312085 conditions, 154304 events. 117671/154304 cut-off events. For 875/875 co-relation queries the response was YES. Maximal size of possible extension queue 8035. Compared 1059067 event pairs, 78450 based on Foata normal form. 1/60614 useless extension candidates. Maximal degree in co-relation 312072. Up to 154139 conditions per place. [2022-12-13 18:07:57,433 INFO L137 encePairwiseOnDemand]: 849/852 looper letters, 70 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2022-12-13 18:07:57,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 439 flow [2022-12-13 18:07:57,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:07:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:07:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1088 transitions. [2022-12-13 18:07:57,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42566510172143973 [2022-12-13 18:07:57,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1088 transitions. [2022-12-13 18:07:57,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1088 transitions. [2022-12-13 18:07:57,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:57,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1088 transitions. [2022-12-13 18:07:57,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:57,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:57,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 852.0) internal successors, (3408), 4 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:57,443 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 297 flow. Second operand 3 states and 1088 transitions. [2022-12-13 18:07:57,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 439 flow [2022-12-13 18:07:57,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:07:57,445 INFO L231 Difference]: Finished difference. Result has 70 places, 79 transitions, 297 flow [2022-12-13 18:07:57,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2022-12-13 18:07:57,446 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2022-12-13 18:07:57,447 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 297 flow [2022-12-13 18:07:57,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:57,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:57,448 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 18:07:57,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:07:57,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:57,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:07:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1928336495, now seen corresponding path program 1 times [2022-12-13 18:07:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:57,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473813038] [2022-12-13 18:07:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:57,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473813038] [2022-12-13 18:07:57,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473813038] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:07:57,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627400195] [2022-12-13 18:07:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:57,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:07:57,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:07:57,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:07:57,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:07:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:57,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:07:57,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:07:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:57,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:07:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:57,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627400195] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:07:57,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:07:57,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 18:07:57,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139872076] [2022-12-13 18:07:57,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:07:57,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:07:57,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:07:57,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:07:57,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 852 [2022-12-13 18:07:57,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 349.14285714285717) internal successors, (2444), 7 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:57,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:57,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 852 [2022-12-13 18:07:57,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:08:55,270 INFO L130 PetriNetUnfolder]: 293576/385127 cut-off events. [2022-12-13 18:08:55,271 INFO L131 PetriNetUnfolder]: For 2166/2166 co-relation queries the response was YES. [2022-12-13 18:08:55,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778808 conditions, 385127 events. 293576/385127 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 15273. Compared 2810300 event pairs, 195945 based on Foata normal form. 0/151742 useless extension candidates. Maximal degree in co-relation 778794. Up to 77056 conditions per place. [2022-12-13 18:08:56,887 INFO L137 encePairwiseOnDemand]: 848/852 looper letters, 289 selfloop transitions, 9 changer transitions 0/301 dead transitions. [2022-12-13 18:08:56,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 301 transitions, 1549 flow [2022-12-13 18:08:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:08:56,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:08:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2678 transitions. [2022-12-13 18:08:56,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.449027498323273 [2022-12-13 18:08:56,891 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2678 transitions. [2022-12-13 18:08:56,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2678 transitions. [2022-12-13 18:08:56,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:08:56,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2678 transitions. [2022-12-13 18:08:56,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 382.57142857142856) internal successors, (2678), 7 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:56,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 852.0) internal successors, (6816), 8 states have internal predecessors, (6816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:56,902 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 852.0) internal successors, (6816), 8 states have internal predecessors, (6816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:56,902 INFO L175 Difference]: Start difference. First operand has 70 places, 79 transitions, 297 flow. Second operand 7 states and 2678 transitions. [2022-12-13 18:08:56,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 301 transitions, 1549 flow [2022-12-13 18:08:56,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 301 transitions, 1537 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:08:56,906 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 344 flow [2022-12-13 18:08:56,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2022-12-13 18:08:56,907 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 6 predicate places. [2022-12-13 18:08:56,907 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 344 flow [2022-12-13 18:08:56,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 349.14285714285717) internal successors, (2444), 7 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:56,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:08:56,908 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 18:08:56,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:08:57,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:57,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:08:57,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:57,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1928336496, now seen corresponding path program 1 times [2022-12-13 18:08:57,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:57,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275600512] [2022-12-13 18:08:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:08:57,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275600512] [2022-12-13 18:08:57,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275600512] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:08:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563295702] [2022-12-13 18:08:57,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:57,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:57,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:08:57,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:08:57,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:08:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:08:57,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:08:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:08:57,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:08:57,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563295702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:08:57,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:08:57,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 18:08:57,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606862665] [2022-12-13 18:08:57,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:08:57,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:08:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:08:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:08:57,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 852 [2022-12-13 18:08:57,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:57,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:08:57,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 852 [2022-12-13 18:08:57,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:09:54,302 INFO L130 PetriNetUnfolder]: 293561/385107 cut-off events. [2022-12-13 18:09:54,302 INFO L131 PetriNetUnfolder]: For 2263/2263 co-relation queries the response was YES. [2022-12-13 18:09:55,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778805 conditions, 385107 events. 293561/385107 cut-off events. For 2263/2263 co-relation queries the response was YES. Maximal size of possible extension queue 15527. Compared 2824164 event pairs, 195945 based on Foata normal form. 10/151756 useless extension candidates. Maximal degree in co-relation 778789. Up to 307574 conditions per place. [2022-12-13 18:09:56,302 INFO L137 encePairwiseOnDemand]: 849/852 looper letters, 130 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-12-13 18:09:56,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 135 transitions, 739 flow [2022-12-13 18:09:56,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:09:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:09:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1490 transitions. [2022-12-13 18:09:56,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43720657276995306 [2022-12-13 18:09:56,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1490 transitions. [2022-12-13 18:09:56,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1490 transitions. [2022-12-13 18:09:56,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:09:56,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1490 transitions. [2022-12-13 18:09:56,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 372.5) internal successors, (1490), 4 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:56,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 852.0) internal successors, (4260), 5 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:56,319 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 852.0) internal successors, (4260), 5 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:56,319 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 344 flow. Second operand 4 states and 1490 transitions. [2022-12-13 18:09:56,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 135 transitions, 739 flow [2022-12-13 18:09:56,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 135 transitions, 731 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 18:09:56,322 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 313 flow [2022-12-13 18:09:56,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2022-12-13 18:09:56,323 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 6 predicate places. [2022-12-13 18:09:56,324 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 313 flow [2022-12-13 18:09:56,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 348.75) internal successors, (1395), 4 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:56,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:09:56,325 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 18:09:56,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:09:56,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:09:56,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:09:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1939811324, now seen corresponding path program 1 times [2022-12-13 18:09:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:56,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588488123] [2022-12-13 18:09:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:09:56,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:56,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588488123] [2022-12-13 18:09:56,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588488123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:09:56,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:09:56,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:09:56,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412383535] [2022-12-13 18:09:56,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:09:56,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:09:56,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:56,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:09:56,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:09:56,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 852 [2022-12-13 18:09:56,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 334.25) internal successors, (1337), 4 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:56,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:09:56,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 852 [2022-12-13 18:09:56,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:10:51,748 INFO L130 PetriNetUnfolder]: 282396/370284 cut-off events. [2022-12-13 18:10:51,748 INFO L131 PetriNetUnfolder]: For 2156/2156 co-relation queries the response was YES. [2022-12-13 18:10:52,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748876 conditions, 370284 events. 282396/370284 cut-off events. For 2156/2156 co-relation queries the response was YES. Maximal size of possible extension queue 15949. Compared 2722901 event pairs, 188280 based on Foata normal form. 2/145453 useless extension candidates. Maximal degree in co-relation 748859. Up to 369893 conditions per place. [2022-12-13 18:10:53,444 INFO L137 encePairwiseOnDemand]: 845/852 looper letters, 71 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2022-12-13 18:10:53,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 84 transitions, 493 flow [2022-12-13 18:10:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:10:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:10:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1394 transitions. [2022-12-13 18:10:53,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.409037558685446 [2022-12-13 18:10:53,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1394 transitions. [2022-12-13 18:10:53,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1394 transitions. [2022-12-13 18:10:53,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:10:53,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1394 transitions. [2022-12-13 18:10:53,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 348.5) internal successors, (1394), 4 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:10:53,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 852.0) internal successors, (4260), 5 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:10:53,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 852.0) internal successors, (4260), 5 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:10:53,455 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 313 flow. Second operand 4 states and 1394 transitions. [2022-12-13 18:10:53,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 84 transitions, 493 flow [2022-12-13 18:10:53,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:10:53,458 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 357 flow [2022-12-13 18:10:53,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2022-12-13 18:10:53,458 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2022-12-13 18:10:53,458 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 357 flow [2022-12-13 18:10:53,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 334.25) internal successors, (1337), 4 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:10:53,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:10:53,459 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-12-13 18:10:53,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:10:53,459 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:10:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:10:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash 604932729, now seen corresponding path program 1 times [2022-12-13 18:10:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:10:53,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180139820] [2022-12-13 18:10:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:53,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:10:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:10:53,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:10:53,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180139820] [2022-12-13 18:10:53,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180139820] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:10:53,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137022564] [2022-12-13 18:10:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:10:53,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:10:53,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:10:53,575 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:10:53,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:10:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:10:53,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:10:53,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:10:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:10:53,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:10:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:10:53,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137022564] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:10:53,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:10:53,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-12-13 18:10:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399812395] [2022-12-13 18:10:53,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:10:53,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:10:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:10:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:10:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:10:54,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 852 [2022-12-13 18:10:54,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 357 flow. Second operand has 14 states, 14 states have (on average 331.2857142857143) internal successors, (4638), 14 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:10:54,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:10:54,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 852 [2022-12-13 18:10:54,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:12:16,279 INFO L130 PetriNetUnfolder]: 405701/532782 cut-off events. [2022-12-13 18:12:16,280 INFO L131 PetriNetUnfolder]: For 3120/3120 co-relation queries the response was YES. [2022-12-13 18:12:17,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078011 conditions, 532782 events. 405701/532782 cut-off events. For 3120/3120 co-relation queries the response was YES. Maximal size of possible extension queue 24129. Compared 4075871 event pairs, 271156 based on Foata normal form. 5/211793 useless extension candidates. Maximal degree in co-relation 1077991. Up to 292152 conditions per place. [2022-12-13 18:12:19,031 INFO L137 encePairwiseOnDemand]: 839/852 looper letters, 224 selfloop transitions, 72 changer transitions 0/299 dead transitions. [2022-12-13 18:12:19,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 299 transitions, 1626 flow [2022-12-13 18:12:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 18:12:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 18:12:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 6535 transitions. [2022-12-13 18:12:19,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40369409439090687 [2022-12-13 18:12:19,042 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 6535 transitions. [2022-12-13 18:12:19,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 6535 transitions. [2022-12-13 18:12:19,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:12:19,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 6535 transitions. [2022-12-13 18:12:19,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 343.94736842105266) internal successors, (6535), 19 states have internal predecessors, (6535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:12:19,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 852.0) internal successors, (17040), 20 states have internal predecessors, (17040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:12:19,068 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 852.0) internal successors, (17040), 20 states have internal predecessors, (17040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:12:19,068 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 357 flow. Second operand 19 states and 6535 transitions. [2022-12-13 18:12:19,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 299 transitions, 1626 flow [2022-12-13 18:12:19,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 299 transitions, 1613 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 18:12:19,073 INFO L231 Difference]: Finished difference. Result has 105 places, 129 transitions, 866 flow [2022-12-13 18:12:19,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=866, PETRI_PLACES=105, PETRI_TRANSITIONS=129} [2022-12-13 18:12:19,074 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 34 predicate places. [2022-12-13 18:12:19,074 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 129 transitions, 866 flow [2022-12-13 18:12:19,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 331.2857142857143) internal successors, (4638), 14 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:12:19,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:12:19,075 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2022-12-13 18:12:19,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:12:19,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 18:12:19,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:12:19,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:12:19,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2112380252, now seen corresponding path program 2 times [2022-12-13 18:12:19,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:12:19,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109545068] [2022-12-13 18:12:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:12:19,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:12:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:12:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:12:19,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:12:19,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109545068] [2022-12-13 18:12:19,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109545068] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:12:19,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200230394] [2022-12-13 18:12:19,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:12:19,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:12:19,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:12:19,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:12:19,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:12:19,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:12:19,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:12:19,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:12:19,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:12:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:12:19,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:12:19,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200230394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:12:19,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:12:19,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-12-13 18:12:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908535738] [2022-12-13 18:12:19,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:12:19,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:12:19,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:12:19,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:12:19,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:12:19,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 852 [2022-12-13 18:12:19,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 129 transitions, 866 flow. Second operand has 4 states, 4 states have (on average 343.25) internal successors, (1373), 4 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:12:19,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:12:19,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 852 [2022-12-13 18:12:19,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:13:34,979 INFO L130 PetriNetUnfolder]: 375682/494344 cut-off events. [2022-12-13 18:13:34,980 INFO L131 PetriNetUnfolder]: For 94901/94901 co-relation queries the response was YES. [2022-12-13 18:13:36,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001445 conditions, 494344 events. 375682/494344 cut-off events. For 94901/94901 co-relation queries the response was YES. Maximal size of possible extension queue 22958. Compared 3780705 event pairs, 251712 based on Foata normal form. 16444/216260 useless extension candidates. Maximal degree in co-relation 1001416. Up to 438706 conditions per place. [2022-12-13 18:13:38,233 INFO L137 encePairwiseOnDemand]: 848/852 looper letters, 162 selfloop transitions, 7 changer transitions 0/172 dead transitions. [2022-12-13 18:13:38,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 172 transitions, 1304 flow [2022-12-13 18:13:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:13:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:13:38,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1466 transitions. [2022-12-13 18:13:38,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4301643192488263 [2022-12-13 18:13:38,237 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1466 transitions. [2022-12-13 18:13:38,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1466 transitions. [2022-12-13 18:13:38,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:13:38,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1466 transitions. [2022-12-13 18:13:38,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 366.5) internal successors, (1466), 4 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:13:38,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 852.0) internal successors, (4260), 5 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:13:38,243 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 852.0) internal successors, (4260), 5 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:13:38,244 INFO L175 Difference]: Start difference. First operand has 105 places, 129 transitions, 866 flow. Second operand 4 states and 1466 transitions. [2022-12-13 18:13:38,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 172 transitions, 1304 flow [2022-12-13 18:13:38,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 172 transitions, 1223 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-12-13 18:13:38,250 INFO L231 Difference]: Finished difference. Result has 101 places, 130 transitions, 814 flow [2022-12-13 18:13:38,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=814, PETRI_PLACES=101, PETRI_TRANSITIONS=130} [2022-12-13 18:13:38,250 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 30 predicate places. [2022-12-13 18:13:38,251 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 130 transitions, 814 flow [2022-12-13 18:13:38,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 343.25) internal successors, (1373), 4 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:13:38,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:13:38,251 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-12-13 18:13:38,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:13:38,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 18:13:38,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:13:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:38,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2028316672, now seen corresponding path program 1 times [2022-12-13 18:13:38,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:38,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884389189] [2022-12-13 18:13:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:38,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:13:38,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884389189] [2022-12-13 18:13:38,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884389189] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716788714] [2022-12-13 18:13:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:38,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:38,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:38,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:38,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:13:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:38,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:13:38,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:13:38,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:13:38,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716788714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:38,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:38,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 18:13:38,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136827422] [2022-12-13 18:13:38,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:38,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:13:38,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:13:38,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:13:38,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 852 [2022-12-13 18:13:38,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 130 transitions, 814 flow. Second operand has 13 states, 13 states have (on average 342.3076923076923) internal successors, (4450), 13 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:13:38,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:13:38,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 852 [2022-12-13 18:13:38,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:15:58,889 INFO L130 PetriNetUnfolder]: 688897/906427 cut-off events. [2022-12-13 18:15:58,889 INFO L131 PetriNetUnfolder]: For 6184/6184 co-relation queries the response was YES. [2022-12-13 18:16:01,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836017 conditions, 906427 events. 688897/906427 cut-off events. For 6184/6184 co-relation queries the response was YES. Maximal size of possible extension queue 35769. Compared 7188315 event pairs, 461523 based on Foata normal form. 30/366268 useless extension candidates. Maximal degree in co-relation 1835990. Up to 178594 conditions per place. [2022-12-13 18:16:04,644 INFO L137 encePairwiseOnDemand]: 845/852 looper letters, 577 selfloop transitions, 69 changer transitions 0/649 dead transitions. [2022-12-13 18:16:04,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 649 transitions, 3941 flow [2022-12-13 18:16:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:16:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 18:16:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4650 transitions. [2022-12-13 18:16:04,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45481220657276994 [2022-12-13 18:16:04,653 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4650 transitions. [2022-12-13 18:16:04,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4650 transitions. [2022-12-13 18:16:04,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:16:04,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4650 transitions. [2022-12-13 18:16:04,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 387.5) internal successors, (4650), 12 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:04,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 852.0) internal successors, (11076), 13 states have internal predecessors, (11076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:04,668 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 852.0) internal successors, (11076), 13 states have internal predecessors, (11076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:04,668 INFO L175 Difference]: Start difference. First operand has 101 places, 130 transitions, 814 flow. Second operand 12 states and 4650 transitions. [2022-12-13 18:16:04,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 649 transitions, 3941 flow [2022-12-13 18:16:04,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 649 transitions, 3940 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:16:04,680 INFO L231 Difference]: Finished difference. Result has 117 places, 166 transitions, 1281 flow [2022-12-13 18:16:04,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=852, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1281, PETRI_PLACES=117, PETRI_TRANSITIONS=166} [2022-12-13 18:16:04,681 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 46 predicate places. [2022-12-13 18:16:04,681 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 166 transitions, 1281 flow [2022-12-13 18:16:04,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 342.3076923076923) internal successors, (4450), 13 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:04,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:16:04,682 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1] [2022-12-13 18:16:04,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:16:04,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 18:16:04,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-12-13 18:16:04,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1434424729, now seen corresponding path program 2 times [2022-12-13 18:16:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:04,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806701344] [2022-12-13 18:16:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:16:05,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:05,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806701344] [2022-12-13 18:16:05,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806701344] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:05,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999182942] [2022-12-13 18:16:05,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:16:05,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:05,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:05,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:05,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff94034a-e150-451a-8423-9b6aff0a259f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:16:05,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:16:05,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:05,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 18:16:05,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:16:05,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:16:05,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999182942] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:05,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:05,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 8 [2022-12-13 18:16:05,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406930290] [2022-12-13 18:16:05,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:05,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:16:05,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:16:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:16:05,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 852 [2022-12-13 18:16:05,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 166 transitions, 1281 flow. Second operand has 9 states, 9 states have (on average 345.0) internal successors, (3105), 9 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:16:05,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:16:05,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 852 [2022-12-13 18:16:05,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand