./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:10:05,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:10:05,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:10:06,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:10:06,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:10:06,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:10:06,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:10:06,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:10:06,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:10:06,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:10:06,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:10:06,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:10:06,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:10:06,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:10:06,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:10:06,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:10:06,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:10:06,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:10:06,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:10:06,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:10:06,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:10:06,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:10:06,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:10:06,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:10:06,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:10:06,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:10:06,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:10:06,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:10:06,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:10:06,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:10:06,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:10:06,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:10:06,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:10:06,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:10:06,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:10:06,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:10:06,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:10:06,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:10:06,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:10:06,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:10:06,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:10:06,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:10:06,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:10:06,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:10:06,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:10:06,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:10:06,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:10:06,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:10:06,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:10:06,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:10:06,130 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:10:06,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:10:06,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:10:06,131 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:10:06,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:10:06,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:10:06,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:10:06,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:10:06,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:10:06,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:10:06,133 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:10:06,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:10:06,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:10:06,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:10:06,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:10:06,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:10:06,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:10:06,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:10:06,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:06,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:10:06,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:10:06,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:10:06,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:10:06,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:10:06,137 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:10:06,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:10:06,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:10:06,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-11-16 12:10:06,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:10:06,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:10:06,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:10:06,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:10:06,465 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:10:06,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-16 12:10:06,538 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/data/088a37877/d256b71789a440b6b25c6b501af4c1be/FLAG22892f9d2 [2022-11-16 12:10:06,975 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:10:06,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-16 12:10:06,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/data/088a37877/d256b71789a440b6b25c6b501af4c1be/FLAG22892f9d2 [2022-11-16 12:10:07,355 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/data/088a37877/d256b71789a440b6b25c6b501af4c1be [2022-11-16 12:10:07,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:10:07,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:10:07,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:07,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:10:07,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:10:07,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e425cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07, skipping insertion in model container [2022-11-16 12:10:07,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:10:07,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:10:07,644 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-16 12:10:07,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:07,661 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:10:07,688 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-16 12:10:07,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:10:07,708 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:10:07,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07 WrapperNode [2022-11-16 12:10:07,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:10:07,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:07,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:10:07,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:10:07,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,776 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 329 [2022-11-16 12:10:07,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:10:07,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:10:07,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:10:07,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:10:07,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,834 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:10:07,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:10:07,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:10:07,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:10:07,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (1/1) ... [2022-11-16 12:10:07,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:10:07,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:07,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:10:07,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:10:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:10:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:10:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:10:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:10:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:10:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:10:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:10:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:10:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:10:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:10:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:10:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:10:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:10:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:10:07,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:10:07,913 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:10:08,076 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:10:08,078 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:10:08,830 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:10:08,844 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:10:08,845 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:10:08,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:08 BoogieIcfgContainer [2022-11-16 12:10:08,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:10:08,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:10:08,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:10:08,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:10:08,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:10:07" (1/3) ... [2022-11-16 12:10:08,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f36caf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:08, skipping insertion in model container [2022-11-16 12:10:08,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:10:07" (2/3) ... [2022-11-16 12:10:08,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f36caf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:10:08, skipping insertion in model container [2022-11-16 12:10:08,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:10:08" (3/3) ... [2022-11-16 12:10:08,862 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-11-16 12:10:08,872 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:10:08,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:10:08,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-16 12:10:08,883 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:10:09,102 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:10:09,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 453 transitions, 930 flow [2022-11-16 12:10:09,407 INFO L130 PetriNetUnfolder]: 35/450 cut-off events. [2022-11-16 12:10:09,407 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:10:09,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 450 events. 35/450 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 938 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 336. Up to 2 conditions per place. [2022-11-16 12:10:09,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 453 transitions, 930 flow [2022-11-16 12:10:09,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 421 transitions, 857 flow [2022-11-16 12:10:09,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:10:09,471 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;@61a18013, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:10:09,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2022-11-16 12:10:09,484 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-16 12:10:09,484 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:10:09,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:09,485 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:09,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:10:09,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1121090442, now seen corresponding path program 1 times [2022-11-16 12:10:09,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:09,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850392980] [2022-11-16 12:10:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:09,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:09,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:09,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850392980] [2022-11-16 12:10:09,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850392980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:09,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:09,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:10:09,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600048544] [2022-11-16 12:10:09,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:09,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:10:09,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:10,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:10:10,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:10:10,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 453 [2022-11-16 12:10:10,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 421 transitions, 857 flow. Second operand has 4 states, 4 states have (on average 388.5) internal successors, (1554), 4 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:10,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 453 [2022-11-16 12:10:10,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:10,380 INFO L130 PetriNetUnfolder]: 23/709 cut-off events. [2022-11-16 12:10:10,380 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 12:10:10,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 709 events. 23/709 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2754 event pairs, 0 based on Foata normal form. 52/659 useless extension candidates. Maximal degree in co-relation 613. Up to 44 conditions per place. [2022-11-16 12:10:10,394 INFO L137 encePairwiseOnDemand]: 412/453 looper letters, 58 selfloop transitions, 14 changer transitions 6/431 dead transitions. [2022-11-16 12:10:10,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 431 transitions, 1036 flow [2022-11-16 12:10:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:10:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:10:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2049 transitions. [2022-11-16 12:10:10,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.904635761589404 [2022-11-16 12:10:10,424 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2049 transitions. [2022-11-16 12:10:10,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2049 transitions. [2022-11-16 12:10:10,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:10,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2049 transitions. [2022-11-16 12:10:10,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 409.8) internal successors, (2049), 5 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,455 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,457 INFO L175 Difference]: Start difference. First operand has 398 places, 421 transitions, 857 flow. Second operand 5 states and 2049 transitions. [2022-11-16 12:10:10,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 431 transitions, 1036 flow [2022-11-16 12:10:10,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 431 transitions, 1018 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:10:10,481 INFO L231 Difference]: Finished difference. Result has 400 places, 405 transitions, 898 flow [2022-11-16 12:10:10,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=898, PETRI_PLACES=400, PETRI_TRANSITIONS=405} [2022-11-16 12:10:10,489 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 2 predicate places. [2022-11-16 12:10:10,489 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 405 transitions, 898 flow [2022-11-16 12:10:10,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.5) internal successors, (1554), 4 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:10,492 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:10,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:10:10,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:10:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1872408818, now seen corresponding path program 1 times [2022-11-16 12:10:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:10,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009348095] [2022-11-16 12:10:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:10,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:10,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009348095] [2022-11-16 12:10:10,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009348095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:10,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644880698] [2022-11-16 12:10:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:10,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:10,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:10,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:10,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:10:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:10,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:10:10,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:10,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:11,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644880698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:11,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:11,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:10:11,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590160310] [2022-11-16 12:10:11,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:11,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:10:11,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:11,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:10:11,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:10:11,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 453 [2022-11-16 12:10:11,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 405 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 389.6666666666667) internal successors, (4676), 12 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:11,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:11,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 453 [2022-11-16 12:10:11,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:11,980 INFO L130 PetriNetUnfolder]: 56/1636 cut-off events. [2022-11-16 12:10:11,981 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 12:10:12,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1636 events. 56/1636 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10015 event pairs, 0 based on Foata normal form. 9/1420 useless extension candidates. Maximal degree in co-relation 1176. Up to 35 conditions per place. [2022-11-16 12:10:12,011 INFO L137 encePairwiseOnDemand]: 430/453 looper letters, 109 selfloop transitions, 62 changer transitions 0/524 dead transitions. [2022-11-16 12:10:12,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 524 transitions, 1580 flow [2022-11-16 12:10:12,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:10:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:10:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7146 transitions. [2022-11-16 12:10:12,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763796909492274 [2022-11-16 12:10:12,025 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7146 transitions. [2022-11-16 12:10:12,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7146 transitions. [2022-11-16 12:10:12,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:12,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7146 transitions. [2022-11-16 12:10:12,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 397.0) internal successors, (7146), 18 states have internal predecessors, (7146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,073 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,073 INFO L175 Difference]: Start difference. First operand has 400 places, 405 transitions, 898 flow. Second operand 18 states and 7146 transitions. [2022-11-16 12:10:12,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 524 transitions, 1580 flow [2022-11-16 12:10:12,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 524 transitions, 1572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:10:12,085 INFO L231 Difference]: Finished difference. Result has 414 places, 447 transitions, 1260 flow [2022-11-16 12:10:12,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1260, PETRI_PLACES=414, PETRI_TRANSITIONS=447} [2022-11-16 12:10:12,086 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 16 predicate places. [2022-11-16 12:10:12,086 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 447 transitions, 1260 flow [2022-11-16 12:10:12,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 389.6666666666667) internal successors, (4676), 12 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:12,090 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:12,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:12,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:12,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:10:12,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2084868133, now seen corresponding path program 1 times [2022-11-16 12:10:12,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:12,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252639196] [2022-11-16 12:10:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:12,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:12,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:12,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252639196] [2022-11-16 12:10:12,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252639196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:12,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294650584] [2022-11-16 12:10:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:12,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:12,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:12,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:12,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:10:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:12,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:10:12,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:12,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:12,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294650584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:12,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:10:12,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:10:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360039869] [2022-11-16 12:10:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:12,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:10:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:10:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:10:12,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 453 [2022-11-16 12:10:12,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 447 transitions, 1260 flow. Second operand has 6 states, 6 states have (on average 389.3333333333333) internal successors, (2336), 6 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:12,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 453 [2022-11-16 12:10:12,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:13,278 INFO L130 PetriNetUnfolder]: 56/1624 cut-off events. [2022-11-16 12:10:13,278 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-16 12:10:13,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 1624 events. 56/1624 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9910 event pairs, 0 based on Foata normal form. 12/1411 useless extension candidates. Maximal degree in co-relation 1529. Up to 68 conditions per place. [2022-11-16 12:10:13,312 INFO L137 encePairwiseOnDemand]: 436/453 looper letters, 59 selfloop transitions, 43 changer transitions 0/455 dead transitions. [2022-11-16 12:10:13,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 455 transitions, 1435 flow [2022-11-16 12:10:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:10:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:10:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2781 transitions. [2022-11-16 12:10:13,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770104068117314 [2022-11-16 12:10:13,321 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2781 transitions. [2022-11-16 12:10:13,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2781 transitions. [2022-11-16 12:10:13,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:13,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2781 transitions. [2022-11-16 12:10:13,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 397.2857142857143) internal successors, (2781), 7 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,338 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,338 INFO L175 Difference]: Start difference. First operand has 414 places, 447 transitions, 1260 flow. Second operand 7 states and 2781 transitions. [2022-11-16 12:10:13,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 455 transitions, 1435 flow [2022-11-16 12:10:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 455 transitions, 1319 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 12:10:13,355 INFO L231 Difference]: Finished difference. Result has 408 places, 435 transitions, 1149 flow [2022-11-16 12:10:13,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1149, PETRI_PLACES=408, PETRI_TRANSITIONS=435} [2022-11-16 12:10:13,358 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 10 predicate places. [2022-11-16 12:10:13,359 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 435 transitions, 1149 flow [2022-11-16 12:10:13,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 389.3333333333333) internal successors, (2336), 6 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:13,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:13,360 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:13,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:13,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:13,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:10:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:13,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1756742794, now seen corresponding path program 2 times [2022-11-16 12:10:13,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:13,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225901278] [2022-11-16 12:10:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:13,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:13,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:13,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225901278] [2022-11-16 12:10:13,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225901278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:13,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797538863] [2022-11-16 12:10:13,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:13,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:13,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:13,866 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:13,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:10:13,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:10:13,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:13,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:10:13,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:10:14,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:10:14,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797538863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:14,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:14,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-16 12:10:14,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266749897] [2022-11-16 12:10:14,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:14,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:10:14,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:10:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:10:14,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 453 [2022-11-16 12:10:14,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 435 transitions, 1149 flow. Second operand has 18 states, 18 states have (on average 376.0) internal successors, (6768), 18 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:14,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:14,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 453 [2022-11-16 12:10:14,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:15,397 INFO L130 PetriNetUnfolder]: 67/1909 cut-off events. [2022-11-16 12:10:15,398 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-16 12:10:15,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1909 events. 67/1909 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 12365 event pairs, 0 based on Foata normal form. 3/1642 useless extension candidates. Maximal degree in co-relation 1541. Up to 22 conditions per place. [2022-11-16 12:10:15,437 INFO L137 encePairwiseOnDemand]: 429/453 looper letters, 130 selfloop transitions, 67 changer transitions 0/535 dead transitions. [2022-11-16 12:10:15,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 535 transitions, 1790 flow [2022-11-16 12:10:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:10:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:10:15,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 7640 transitions. [2022-11-16 12:10:15,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8432671081677704 [2022-11-16 12:10:15,455 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 7640 transitions. [2022-11-16 12:10:15,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 7640 transitions. [2022-11-16 12:10:15,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:15,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 7640 transitions. [2022-11-16 12:10:15,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 382.0) internal successors, (7640), 20 states have internal predecessors, (7640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 453.0) internal successors, (9513), 21 states have internal predecessors, (9513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,501 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 453.0) internal successors, (9513), 21 states have internal predecessors, (9513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,502 INFO L175 Difference]: Start difference. First operand has 408 places, 435 transitions, 1149 flow. Second operand 20 states and 7640 transitions. [2022-11-16 12:10:15,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 535 transitions, 1790 flow [2022-11-16 12:10:15,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 535 transitions, 1707 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:10:15,514 INFO L231 Difference]: Finished difference. Result has 416 places, 440 transitions, 1223 flow [2022-11-16 12:10:15,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1223, PETRI_PLACES=416, PETRI_TRANSITIONS=440} [2022-11-16 12:10:15,517 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 18 predicate places. [2022-11-16 12:10:15,517 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 440 transitions, 1223 flow [2022-11-16 12:10:15,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 376.0) internal successors, (6768), 18 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:15,521 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:15,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:15,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:15,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:10:15,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash -29602295, now seen corresponding path program 1 times [2022-11-16 12:10:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:15,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297254984] [2022-11-16 12:10:15,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:15,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:15,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:15,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297254984] [2022-11-16 12:10:15,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297254984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:15,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:15,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:15,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819735474] [2022-11-16 12:10:15,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:15,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:10:15,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:10:15,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:10:15,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 453 [2022-11-16 12:10:15,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 440 transitions, 1223 flow. Second operand has 5 states, 5 states have (on average 392.0) internal successors, (1960), 5 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:15,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 453 [2022-11-16 12:10:15,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:16,420 INFO L130 PetriNetUnfolder]: 56/1627 cut-off events. [2022-11-16 12:10:16,420 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-16 12:10:16,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 1627 events. 56/1627 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9643 event pairs, 0 based on Foata normal form. 3/1420 useless extension candidates. Maximal degree in co-relation 292. Up to 116 conditions per place. [2022-11-16 12:10:16,448 INFO L137 encePairwiseOnDemand]: 438/453 looper letters, 62 selfloop transitions, 20 changer transitions 0/444 dead transitions. [2022-11-16 12:10:16,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 444 transitions, 1391 flow [2022-11-16 12:10:16,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:10:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:10:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1991 transitions. [2022-11-16 12:10:16,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879028697571744 [2022-11-16 12:10:16,455 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1991 transitions. [2022-11-16 12:10:16,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1991 transitions. [2022-11-16 12:10:16,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:16,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1991 transitions. [2022-11-16 12:10:16,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 398.2) internal successors, (1991), 5 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,469 INFO L175 Difference]: Start difference. First operand has 416 places, 440 transitions, 1223 flow. Second operand 5 states and 1991 transitions. [2022-11-16 12:10:16,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 444 transitions, 1391 flow [2022-11-16 12:10:16,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 444 transitions, 1247 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-16 12:10:16,482 INFO L231 Difference]: Finished difference. Result has 406 places, 438 transitions, 1117 flow [2022-11-16 12:10:16,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1117, PETRI_PLACES=406, PETRI_TRANSITIONS=438} [2022-11-16 12:10:16,486 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 8 predicate places. [2022-11-16 12:10:16,487 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 438 transitions, 1117 flow [2022-11-16 12:10:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 392.0) internal successors, (1960), 5 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:16,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:16,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:16,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:10:16,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:10:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash -435126156, now seen corresponding path program 1 times [2022-11-16 12:10:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:16,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106419131] [2022-11-16 12:10:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:16,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:16,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:16,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106419131] [2022-11-16 12:10:16,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106419131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:16,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256425800] [2022-11-16 12:10:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:16,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:16,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:16,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:16,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:10:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:16,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:10:16,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:17,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:17,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256425800] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:17,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:17,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 12:10:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835298543] [2022-11-16 12:10:17,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:17,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:10:17,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:10:17,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:10:17,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 453 [2022-11-16 12:10:17,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 438 transitions, 1117 flow. Second operand has 15 states, 15 states have (on average 376.6666666666667) internal successors, (5650), 15 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:17,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 453 [2022-11-16 12:10:17,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:17,849 INFO L130 PetriNetUnfolder]: 34/1063 cut-off events. [2022-11-16 12:10:17,849 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-16 12:10:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1063 events. 34/1063 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4797 event pairs, 0 based on Foata normal form. 6/943 useless extension candidates. Maximal degree in co-relation 915. Up to 60 conditions per place. [2022-11-16 12:10:17,872 INFO L137 encePairwiseOnDemand]: 429/453 looper letters, 77 selfloop transitions, 46 changer transitions 0/461 dead transitions. [2022-11-16 12:10:17,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 461 transitions, 1419 flow [2022-11-16 12:10:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:10:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:10:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4193 transitions. [2022-11-16 12:10:17,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8414609672887818 [2022-11-16 12:10:17,881 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4193 transitions. [2022-11-16 12:10:17,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4193 transitions. [2022-11-16 12:10:17,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:17,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4193 transitions. [2022-11-16 12:10:17,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 381.1818181818182) internal successors, (4193), 11 states have internal predecessors, (4193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 453.0) internal successors, (5436), 12 states have internal predecessors, (5436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,902 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 453.0) internal successors, (5436), 12 states have internal predecessors, (5436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,903 INFO L175 Difference]: Start difference. First operand has 406 places, 438 transitions, 1117 flow. Second operand 11 states and 4193 transitions. [2022-11-16 12:10:17,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 461 transitions, 1419 flow [2022-11-16 12:10:17,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 461 transitions, 1387 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:10:17,912 INFO L231 Difference]: Finished difference. Result has 415 places, 437 transitions, 1230 flow [2022-11-16 12:10:17,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1230, PETRI_PLACES=415, PETRI_TRANSITIONS=437} [2022-11-16 12:10:17,916 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 17 predicate places. [2022-11-16 12:10:17,916 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 437 transitions, 1230 flow [2022-11-16 12:10:17,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 376.6666666666667) internal successors, (5650), 15 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:17,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:17,918 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:17,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:10:18,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:10:18,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:18,131 INFO L85 PathProgramCache]: Analyzing trace with hash -989018924, now seen corresponding path program 2 times [2022-11-16 12:10:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:18,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264205681] [2022-11-16 12:10:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:18,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:10:18,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:18,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264205681] [2022-11-16 12:10:18,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264205681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:18,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778191331] [2022-11-16 12:10:18,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:18,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:18,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:18,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:18,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:10:18,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:10:18,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:18,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:10:18,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:10:19,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:10:19,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778191331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:19,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:19,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 12:10:19,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431524951] [2022-11-16 12:10:19,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:19,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:10:19,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:10:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:10:19,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 453 [2022-11-16 12:10:19,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 437 transitions, 1230 flow. Second operand has 22 states, 22 states have (on average 378.72727272727275) internal successors, (8332), 22 states have internal predecessors, (8332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:19,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 453 [2022-11-16 12:10:19,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:19,916 INFO L130 PetriNetUnfolder]: 12/499 cut-off events. [2022-11-16 12:10:19,917 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-16 12:10:19,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 499 events. 12/499 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 797 event pairs, 0 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 281. Up to 28 conditions per place. [2022-11-16 12:10:19,925 INFO L137 encePairwiseOnDemand]: 429/453 looper letters, 86 selfloop transitions, 51 changer transitions 0/475 dead transitions. [2022-11-16 12:10:19,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 475 transitions, 1620 flow [2022-11-16 12:10:19,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:10:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:10:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6467 transitions. [2022-11-16 12:10:19,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8397610699909103 [2022-11-16 12:10:19,940 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6467 transitions. [2022-11-16 12:10:19,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6467 transitions. [2022-11-16 12:10:19,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:19,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6467 transitions. [2022-11-16 12:10:19,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 380.4117647058824) internal successors, (6467), 17 states have internal predecessors, (6467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 453.0) internal successors, (8154), 18 states have internal predecessors, (8154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,977 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 453.0) internal successors, (8154), 18 states have internal predecessors, (8154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,977 INFO L175 Difference]: Start difference. First operand has 415 places, 437 transitions, 1230 flow. Second operand 17 states and 6467 transitions. [2022-11-16 12:10:19,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 475 transitions, 1620 flow [2022-11-16 12:10:19,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 475 transitions, 1538 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-16 12:10:19,989 INFO L231 Difference]: Finished difference. Result has 424 places, 433 transitions, 1264 flow [2022-11-16 12:10:19,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1264, PETRI_PLACES=424, PETRI_TRANSITIONS=433} [2022-11-16 12:10:19,991 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 26 predicate places. [2022-11-16 12:10:19,991 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 433 transitions, 1264 flow [2022-11-16 12:10:19,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 378.72727272727275) internal successors, (8332), 22 states have internal predecessors, (8332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:19,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:19,995 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:20,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:20,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:20,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:10:20,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1564638924, now seen corresponding path program 3 times [2022-11-16 12:10:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:20,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881373185] [2022-11-16 12:10:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:20,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 187 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-16 12:10:25,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:25,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881373185] [2022-11-16 12:10:25,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881373185] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:25,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644082725] [2022-11-16 12:10:25,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:10:25,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:25,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:25,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:25,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:10:26,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 12:10:26,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:26,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-16 12:10:26,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:26,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:10:27,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:10:27,426 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 12:10:27,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2022-11-16 12:10:27,862 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 12:10:27,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-16 12:10:28,277 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 12:10:28,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-16 12:10:28,683 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 12:10:28,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-16 12:10:29,515 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:10:29,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:10:29,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:10:29,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:10:29,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:10:29,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:10:30,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:10:30,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:10:30,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:10:30,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:10:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 37 proven. 124 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-16 12:10:30,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:08,343 INFO L321 Elim1Store]: treesize reduction 236, result has 35.3 percent of original size [2022-11-16 12:11:08,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 142 [2022-11-16 12:11:08,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:11:08,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 212 [2022-11-16 12:11:08,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 102 [2022-11-16 12:11:08,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-11-16 12:11:11,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:11:11,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2022-11-16 12:11:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-16 12:11:12,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644082725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:11:12,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:11:12,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 41] total 104 [2022-11-16 12:11:12,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626238527] [2022-11-16 12:11:12,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:12,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-11-16 12:11:12,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:12,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-11-16 12:11:12,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=759, Invalid=10094, Unknown=67, NotChecked=0, Total=10920 [2022-11-16 12:11:12,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 453 [2022-11-16 12:11:12,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 433 transitions, 1264 flow. Second operand has 105 states, 105 states have (on average 300.12380952380954) internal successors, (31513), 105 states have internal predecessors, (31513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:12,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:12,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 453 [2022-11-16 12:11:12,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:30,976 INFO L130 PetriNetUnfolder]: 5479/22375 cut-off events. [2022-11-16 12:11:30,976 INFO L131 PetriNetUnfolder]: For 194/498 co-relation queries the response was YES. [2022-11-16 12:11:31,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30723 conditions, 22375 events. 5479/22375 cut-off events. For 194/498 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 274227 event pairs, 956 based on Foata normal form. 2/18055 useless extension candidates. Maximal degree in co-relation 30082. Up to 1874 conditions per place. [2022-11-16 12:11:31,390 INFO L137 encePairwiseOnDemand]: 390/453 looper letters, 363 selfloop transitions, 131 changer transitions 0/760 dead transitions. [2022-11-16 12:11:31,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 760 transitions, 2975 flow [2022-11-16 12:11:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-16 12:11:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-11-16 12:11:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 22690 transitions. [2022-11-16 12:11:31,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6678440029433407 [2022-11-16 12:11:31,428 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 22690 transitions. [2022-11-16 12:11:31,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 22690 transitions. [2022-11-16 12:11:31,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:31,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 22690 transitions. [2022-11-16 12:11:31,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 302.53333333333336) internal successors, (22690), 75 states have internal predecessors, (22690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:31,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 453.0) internal successors, (34428), 76 states have internal predecessors, (34428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:31,531 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 453.0) internal successors, (34428), 76 states have internal predecessors, (34428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:31,531 INFO L175 Difference]: Start difference. First operand has 424 places, 433 transitions, 1264 flow. Second operand 75 states and 22690 transitions. [2022-11-16 12:11:31,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 760 transitions, 2975 flow [2022-11-16 12:11:31,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 760 transitions, 2873 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-16 12:11:31,550 INFO L231 Difference]: Finished difference. Result has 508 places, 490 transitions, 1734 flow [2022-11-16 12:11:31,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=1734, PETRI_PLACES=508, PETRI_TRANSITIONS=490} [2022-11-16 12:11:31,552 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 110 predicate places. [2022-11-16 12:11:31,552 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 490 transitions, 1734 flow [2022-11-16 12:11:31,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 300.12380952380954) internal successors, (31513), 105 states have internal predecessors, (31513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:31,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:31,559 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:31,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:31,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:31,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:11:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1259165271, now seen corresponding path program 1 times [2022-11-16 12:11:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:31,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783853752] [2022-11-16 12:11:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:31,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-16 12:11:32,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:32,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783853752] [2022-11-16 12:11:32,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783853752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:32,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:32,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:11:32,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615869293] [2022-11-16 12:11:32,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:32,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:11:32,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:32,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:11:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:11:32,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 453 [2022-11-16 12:11:32,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 490 transitions, 1734 flow. Second operand has 4 states, 4 states have (on average 401.75) internal successors, (1607), 4 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:32,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:11:32,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 453 [2022-11-16 12:11:32,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:11:33,537 INFO L130 PetriNetUnfolder]: 217/2581 cut-off events. [2022-11-16 12:11:33,537 INFO L131 PetriNetUnfolder]: For 565/567 co-relation queries the response was YES. [2022-11-16 12:11:33,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 2581 events. 217/2581 cut-off events. For 565/567 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 19008 event pairs, 60 based on Foata normal form. 17/2230 useless extension candidates. Maximal degree in co-relation 3582. Up to 230 conditions per place. [2022-11-16 12:11:33,657 INFO L137 encePairwiseOnDemand]: 446/453 looper letters, 52 selfloop transitions, 8 changer transitions 0/500 dead transitions. [2022-11-16 12:11:33,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 500 transitions, 1864 flow [2022-11-16 12:11:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:11:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:11:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1645 transitions. [2022-11-16 12:11:33,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9078366445916115 [2022-11-16 12:11:33,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1645 transitions. [2022-11-16 12:11:33,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1645 transitions. [2022-11-16 12:11:33,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:11:33,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1645 transitions. [2022-11-16 12:11:33,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 411.25) internal successors, (1645), 4 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:33,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:33,698 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:33,698 INFO L175 Difference]: Start difference. First operand has 508 places, 490 transitions, 1734 flow. Second operand 4 states and 1645 transitions. [2022-11-16 12:11:33,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 500 transitions, 1864 flow [2022-11-16 12:11:33,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 500 transitions, 1730 flow, removed 0 selfloop flow, removed 31 redundant places. [2022-11-16 12:11:33,716 INFO L231 Difference]: Finished difference. Result has 482 places, 487 transitions, 1620 flow [2022-11-16 12:11:33,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1620, PETRI_PLACES=482, PETRI_TRANSITIONS=487} [2022-11-16 12:11:33,733 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 84 predicate places. [2022-11-16 12:11:33,733 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 487 transitions, 1620 flow [2022-11-16 12:11:33,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 401.75) internal successors, (1607), 4 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:11:33,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:11:33,734 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:33,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:11:33,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:11:33,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:33,735 INFO L85 PathProgramCache]: Analyzing trace with hash -674949534, now seen corresponding path program 1 times [2022-11-16 12:11:33,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:33,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391186164] [2022-11-16 12:11:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:33,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 11 proven. 108 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 12:11:38,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:38,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391186164] [2022-11-16 12:11:38,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391186164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:38,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742775169] [2022-11-16 12:11:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:38,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:38,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:38,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:38,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:11:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:38,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-16 12:11:38,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:39,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:11:39,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:11:39,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:39,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:11:40,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:40,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:11:40,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:40,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:11:40,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:40,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:11:41,647 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:11:41,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:11:41,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:11:41,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:11:42,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:11:42,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:11:42,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:11:42,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:42,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:11:42,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:42,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:11:43,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:11:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 76 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-16 12:11:43,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:43,374 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_471 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_471) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-16 12:13:25,892 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-16 12:13:25,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 77 [2022-11-16 12:13:25,921 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:25,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 490 treesize of output 476 [2022-11-16 12:13:25,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 462 treesize of output 430 [2022-11-16 12:13:25,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 207 [2022-11-16 12:13:25,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 414 treesize of output 406 [2022-11-16 12:13:47,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:47,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-16 12:13:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 39 proven. 82 refuted. 3 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-16 12:13:47,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742775169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:47,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:13:47,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 32] total 86 [2022-11-16 12:13:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515428753] [2022-11-16 12:13:47,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:47,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-11-16 12:13:47,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:47,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-11-16 12:13:47,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=6690, Unknown=101, NotChecked=168, Total=7482 [2022-11-16 12:13:47,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 453 [2022-11-16 12:13:47,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 487 transitions, 1620 flow. Second operand has 87 states, 87 states have (on average 265.5632183908046) internal successors, (23104), 87 states have internal predecessors, (23104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:47,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:13:47,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 453 [2022-11-16 12:13:47,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:11,469 INFO L130 PetriNetUnfolder]: 9274/45939 cut-off events. [2022-11-16 12:14:11,470 INFO L131 PetriNetUnfolder]: For 6803/7116 co-relation queries the response was YES. [2022-11-16 12:14:12,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63934 conditions, 45939 events. 9274/45939 cut-off events. For 6803/7116 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 670361 event pairs, 1119 based on Foata normal form. 27/37886 useless extension candidates. Maximal degree in co-relation 63468. Up to 3310 conditions per place. [2022-11-16 12:14:12,437 INFO L137 encePairwiseOnDemand]: 410/453 looper letters, 383 selfloop transitions, 108 changer transitions 0/740 dead transitions. [2022-11-16 12:14:12,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 740 transitions, 3485 flow [2022-11-16 12:14:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-16 12:14:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-11-16 12:14:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 15286 transitions. [2022-11-16 12:14:12,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5919987606986561 [2022-11-16 12:14:12,461 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 15286 transitions. [2022-11-16 12:14:12,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 15286 transitions. [2022-11-16 12:14:12,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:12,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 15286 transitions. [2022-11-16 12:14:12,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 268.17543859649123) internal successors, (15286), 57 states have internal predecessors, (15286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:12,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 453.0) internal successors, (26274), 58 states have internal predecessors, (26274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:12,532 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 453.0) internal successors, (26274), 58 states have internal predecessors, (26274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:12,533 INFO L175 Difference]: Start difference. First operand has 482 places, 487 transitions, 1620 flow. Second operand 57 states and 15286 transitions. [2022-11-16 12:14:12,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 740 transitions, 3485 flow [2022-11-16 12:14:12,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 740 transitions, 3485 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:14:12,591 INFO L231 Difference]: Finished difference. Result has 552 places, 527 transitions, 2211 flow [2022-11-16 12:14:12,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=2211, PETRI_PLACES=552, PETRI_TRANSITIONS=527} [2022-11-16 12:14:12,594 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 154 predicate places. [2022-11-16 12:14:12,594 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 527 transitions, 2211 flow [2022-11-16 12:14:12,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 265.5632183908046) internal successors, (23104), 87 states have internal predecessors, (23104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:12,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:12,598 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:12,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:12,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:14:12,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 12:14:12,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash -57283231, now seen corresponding path program 1 times [2022-11-16 12:14:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:12,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645715298] [2022-11-16 12:14:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 158 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-16 12:14:17,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645715298] [2022-11-16 12:14:17,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645715298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135910912] [2022-11-16 12:14:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:17,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:17,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:17,998 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:18,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b378d71e-0612-4cbd-a508-dc2dd2d55698/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:14:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:18,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 12:14:18,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:19,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:14:19,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:19,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:14:20,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:20,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:14:20,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:20,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:14:20,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:20,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:14:21,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:21,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:14:21,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:21,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:14:21,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:14:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 12:14:21,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:24,133 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_574) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456)) is different from false [2022-11-16 12:15:50,602 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-16 12:15:50,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 74 [2022-11-16 12:15:50,616 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:50,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 120 [2022-11-16 12:15:50,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2022-11-16 12:15:50,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-16 12:16:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 37 proven. 53 refuted. 5 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 12:16:12,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135910912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:12,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:16:12,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 26, 29] total 81 [2022-11-16 12:16:12,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933271750] [2022-11-16 12:16:12,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:12,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-11-16 12:16:12,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:12,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-11-16 12:16:12,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=5822, Unknown=132, NotChecked=158, Total=6642 [2022-11-16 12:16:12,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 453 [2022-11-16 12:16:12,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 527 transitions, 2211 flow. Second operand has 82 states, 82 states have (on average 314.9756097560976) internal successors, (25828), 82 states have internal predecessors, (25828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:12,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:12,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 453 [2022-11-16 12:16:12,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand