./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:56:53,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:56:53,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:56:53,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:56:53,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:56:53,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:56:53,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:56:53,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:56:53,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:56:53,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:56:53,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:56:53,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:56:53,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:56:53,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:56:53,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:56:53,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:56:53,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:56:53,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:56:53,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:56:53,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:56:53,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:56:53,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:56:53,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:56:53,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:56:53,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:56:53,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:56:53,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:56:53,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:56:53,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:56:53,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:56:53,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:56:53,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:56:53,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:56:53,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:56:53,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:56:53,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:56:53,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:56:53,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:56:53,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:56:53,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:56:53,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:56:53,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 16:56:53,902 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:56:53,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:56:53,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:56:53,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:56:53,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:56:53,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:56:53,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:56:53,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:56:53,905 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:56:53,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:56:53,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:56:53,906 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:56:53,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:56:53,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:56:53,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:56:53,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:56:53,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:56:53,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:56:53,908 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:56:53,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:56:53,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:56:53,909 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:56:53,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:56:53,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:56:53,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:56:53,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:56:53,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:56:53,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:56:53,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:56:53,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:56:53,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:56:53,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:56:53,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:56:53,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:56:53,912 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:56:53,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:56:53,912 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2022-11-25 16:56:54,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:56:54,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:56:54,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:56:54,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:56:54,254 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:56:54,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-25 16:56:57,297 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:56:57,562 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:56:57,563 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-25 16:56:57,570 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/data/dd776c90f/a1ebb6dedd3f453f961c26e1e26b86e0/FLAGfe2df7b30 [2022-11-25 16:56:57,586 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/data/dd776c90f/a1ebb6dedd3f453f961c26e1e26b86e0 [2022-11-25 16:56:57,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:56:57,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:56:57,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:56:57,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:56:57,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:56:57,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:57,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a5c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57, skipping insertion in model container [2022-11-25 16:56:57,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:57,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:56:57,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:56:57,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:56:57,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:56:57,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:56:57,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:56:57,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:56:57,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:56:57,805 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-25 16:56:57,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:56:57,833 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:56:57,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:56:57,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:56:57,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:56:57,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:56:57,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:56:57,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:56:57,882 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-25 16:56:57,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:56:57,907 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:56:57,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57 WrapperNode [2022-11-25 16:56:57,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:56:57,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:56:57,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:56:57,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:56:57,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:57,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:57,988 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 284 [2022-11-25 16:56:57,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:56:57,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:56:57,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:56:57,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:56:58,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:58,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:58,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:58,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:58,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:58,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:58,047 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:58,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:58,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:56:58,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:56:58,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:56:58,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:56:58,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (1/1) ... [2022-11-25 16:56:58,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:56:58,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:58,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:56:58,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:56:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:56:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:56:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:56:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:56:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 16:56:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 16:56:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 16:56:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 16:56:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 16:56:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 16:56:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:56:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 16:56:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 16:56:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:56:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:56:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:56:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:56:58,159 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:56:58,318 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:56:58,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:56:59,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:56:59,403 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:56:59,403 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 16:56:59,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:56:59 BoogieIcfgContainer [2022-11-25 16:56:59,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:56:59,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:56:59,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:56:59,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:56:59,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:56:57" (1/3) ... [2022-11-25 16:56:59,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b839507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:56:59, skipping insertion in model container [2022-11-25 16:56:59,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:57" (2/3) ... [2022-11-25 16:56:59,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b839507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:56:59, skipping insertion in model container [2022-11-25 16:56:59,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:56:59" (3/3) ... [2022-11-25 16:56:59,421 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2022-11-25 16:56:59,431 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:56:59,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:56:59,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-25 16:56:59,442 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:56:59,603 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 16:56:59,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 390 transitions, 804 flow [2022-11-25 16:56:59,822 INFO L130 PetriNetUnfolder]: 31/387 cut-off events. [2022-11-25 16:56:59,822 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:59,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 387 events. 31/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 406 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 294. Up to 3 conditions per place. [2022-11-25 16:56:59,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 390 transitions, 804 flow [2022-11-25 16:56:59,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 362 transitions, 742 flow [2022-11-25 16:56:59,841 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:56:59,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 362 transitions, 742 flow [2022-11-25 16:56:59,858 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 362 transitions, 742 flow [2022-11-25 16:56:59,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 362 transitions, 742 flow [2022-11-25 16:56:59,960 INFO L130 PetriNetUnfolder]: 30/362 cut-off events. [2022-11-25 16:56:59,960 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:59,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 30/362 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 404 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 294. Up to 3 conditions per place. [2022-11-25 16:56:59,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 4714 [2022-11-25 16:57:28,057 INFO L134 LiptonReduction]: Checked pairs total: 9185 [2022-11-25 16:57:28,057 INFO L136 LiptonReduction]: Total number of compositions: 426 [2022-11-25 16:57:28,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:57:28,085 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;@7a5cee1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:57:28,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-11-25 16:57:28,088 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:57:28,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:57:28,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:57:28,090 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:57:28,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:57:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:57:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash 51515, now seen corresponding path program 1 times [2022-11-25 16:57:28,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:57:28,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423550657] [2022-11-25 16:57:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:57:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:28,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:57:28,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423550657] [2022-11-25 16:57:28,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423550657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:57:28,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:57:28,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:57:28,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88706573] [2022-11-25 16:57:28,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:57:28,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:57:28,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:57:28,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:57:28,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:57:28,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 816 [2022-11-25 16:57:28,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 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) [2022-11-25 16:57:28,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:28,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 816 [2022-11-25 16:57:28,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:57:31,453 INFO L130 PetriNetUnfolder]: 9089/11730 cut-off events. [2022-11-25 16:57:31,454 INFO L131 PetriNetUnfolder]: For 322/322 co-relation queries the response was YES. [2022-11-25 16:57:31,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23765 conditions, 11730 events. 9089/11730 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 57898 event pairs, 4751 based on Foata normal form. 0/4832 useless extension candidates. Maximal degree in co-relation 10950. Up to 5843 conditions per place. [2022-11-25 16:57:31,598 INFO L137 encePairwiseOnDemand]: 796/816 looper letters, 97 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-11-25 16:57:31,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 107 transitions, 456 flow [2022-11-25 16:57:31,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:57:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:57:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1163 transitions. [2022-11-25 16:57:31,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4750816993464052 [2022-11-25 16:57:31,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1163 transitions. [2022-11-25 16:57:31,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1163 transitions. [2022-11-25 16:57:31,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:57:31,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1163 transitions. [2022-11-25 16:57:31,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 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) [2022-11-25 16:57:31,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2022-11-25 16:57:31,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2022-11-25 16:57:31,657 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 152 flow. Second operand 3 states and 1163 transitions. [2022-11-25 16:57:31,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 107 transitions, 456 flow [2022-11-25 16:57:31,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 107 transitions, 432 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 16:57:31,685 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 180 flow [2022-11-25 16:57:31,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2022-11-25 16:57:31,691 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2022-11-25 16:57:31,692 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 180 flow [2022-11-25 16:57:31,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 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) [2022-11-25 16:57:31,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:57:31,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:57:31,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:57:31,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:57:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:57:31,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1598414, now seen corresponding path program 1 times [2022-11-25 16:57:31,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:57:31,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353827088] [2022-11-25 16:57:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:31,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:57:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:31,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:57:31,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353827088] [2022-11-25 16:57:31,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353827088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:57:31,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331191522] [2022-11-25 16:57:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:31,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:31,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:57:31,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:57:31,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:57:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:32,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:57:32,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:57:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:32,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:57:32,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331191522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:57:32,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:57:32,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 16:57:32,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652411394] [2022-11-25 16:57:32,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:57:32,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:57:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:57:32,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:57:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:57:32,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 816 [2022-11-25 16:57:32,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 346.75) internal successors, (1387), 4 states have internal predecessors, (1387), 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) [2022-11-25 16:57:32,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:32,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 816 [2022-11-25 16:57:32,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:57:34,796 INFO L130 PetriNetUnfolder]: 9089/11727 cut-off events. [2022-11-25 16:57:34,796 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-25 16:57:34,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23474 conditions, 11727 events. 9089/11727 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 58179 event pairs, 4751 based on Foata normal form. 0/4838 useless extension candidates. Maximal degree in co-relation 11873. Up to 5843 conditions per place. [2022-11-25 16:57:34,890 INFO L137 encePairwiseOnDemand]: 807/816 looper letters, 94 selfloop transitions, 6 changer transitions 0/104 dead transitions. [2022-11-25 16:57:34,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 460 flow [2022-11-25 16:57:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:57:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:57:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1487 transitions. [2022-11-25 16:57:34,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45557598039215685 [2022-11-25 16:57:34,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1487 transitions. [2022-11-25 16:57:34,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1487 transitions. [2022-11-25 16:57:34,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:57:34,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1487 transitions. [2022-11-25 16:57:34,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 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) [2022-11-25 16:57:34,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 816.0) internal successors, (4080), 5 states have internal predecessors, (4080), 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) [2022-11-25 16:57:34,916 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 816.0) internal successors, (4080), 5 states have internal predecessors, (4080), 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) [2022-11-25 16:57:34,916 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 180 flow. Second operand 4 states and 1487 transitions. [2022-11-25 16:57:34,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 460 flow [2022-11-25 16:57:34,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:57:34,923 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 168 flow [2022-11-25 16:57:34,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2022-11-25 16:57:34,924 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -12 predicate places. [2022-11-25 16:57:34,924 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 168 flow [2022-11-25 16:57:34,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 346.75) internal successors, (1387), 4 states have internal predecessors, (1387), 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) [2022-11-25 16:57:34,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:57:34,926 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:57:34,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:57:35,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:35,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:57:35,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:57:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1598415, now seen corresponding path program 1 times [2022-11-25 16:57:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:57:35,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091461312] [2022-11-25 16:57:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:57:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:35,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:57:35,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091461312] [2022-11-25 16:57:35,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091461312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:57:35,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136695442] [2022-11-25 16:57:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:35,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:35,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:57:35,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:57:35,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:57:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:35,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:57:35,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:57:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:35,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:57:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:35,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136695442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:57:35,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:57:35,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 16:57:35,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777440530] [2022-11-25 16:57:35,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:57:35,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:57:35,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:57:35,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:57:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:57:35,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 816 [2022-11-25 16:57:35,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 168 flow. Second operand has 7 states, 7 states have (on average 347.14285714285717) internal successors, (2430), 7 states have internal predecessors, (2430), 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) [2022-11-25 16:57:35,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:35,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 816 [2022-11-25 16:57:35,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:57:41,355 INFO L130 PetriNetUnfolder]: 22520/29067 cut-off events. [2022-11-25 16:57:41,356 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-11-25 16:57:41,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58190 conditions, 29067 events. 22520/29067 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 160154 event pairs, 11807 based on Foata normal form. 0/12014 useless extension candidates. Maximal degree in co-relation 46235. Up to 5849 conditions per place. [2022-11-25 16:57:41,544 INFO L137 encePairwiseOnDemand]: 807/816 looper letters, 223 selfloop transitions, 21 changer transitions 0/248 dead transitions. [2022-11-25 16:57:41,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 248 transitions, 1096 flow [2022-11-25 16:57:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:57:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:57:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2329 transitions. [2022-11-25 16:57:41,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2022-11-25 16:57:41,552 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2329 transitions. [2022-11-25 16:57:41,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2329 transitions. [2022-11-25 16:57:41,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:57:41,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2329 transitions. [2022-11-25 16:57:41,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 388.1666666666667) internal successors, (2329), 6 states have internal predecessors, (2329), 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) [2022-11-25 16:57:41,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:57:41,578 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:57:41,578 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 168 flow. Second operand 6 states and 2329 transitions. [2022-11-25 16:57:41,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 248 transitions, 1096 flow [2022-11-25 16:57:41,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 248 transitions, 1083 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:57:41,589 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 317 flow [2022-11-25 16:57:41,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=63, PETRI_TRANSITIONS=76} [2022-11-25 16:57:41,596 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2022-11-25 16:57:41,597 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 317 flow [2022-11-25 16:57:41,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 347.14285714285717) internal successors, (2430), 7 states have internal predecessors, (2430), 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) [2022-11-25 16:57:41,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:57:41,599 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:57:41,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:57:41,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:41,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:57:41,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:57:41,805 INFO L85 PathProgramCache]: Analyzing trace with hash 49607639, now seen corresponding path program 1 times [2022-11-25 16:57:41,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:57:41,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335992380] [2022-11-25 16:57:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:41,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:57:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:41,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:57:41,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335992380] [2022-11-25 16:57:41,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335992380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:57:41,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:57:41,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:57:41,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243405329] [2022-11-25 16:57:41,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:57:41,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:57:41,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:57:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:57:41,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:57:42,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 816 [2022-11-25 16:57:42,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 344.3333333333333) internal successors, (1033), 3 states have internal predecessors, (1033), 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) [2022-11-25 16:57:42,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:42,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 816 [2022-11-25 16:57:42,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:57:46,796 INFO L130 PetriNetUnfolder]: 23055/29718 cut-off events. [2022-11-25 16:57:46,796 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2022-11-25 16:57:46,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59477 conditions, 29718 events. 23055/29718 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1906. Compared 163685 event pairs, 11995 based on Foata normal form. 1/12229 useless extension candidates. Maximal degree in co-relation 47493. Up to 29218 conditions per place. [2022-11-25 16:57:47,013 INFO L137 encePairwiseOnDemand]: 813/816 looper letters, 69 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-11-25 16:57:47,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 455 flow [2022-11-25 16:57:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:57:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:57:47,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1083 transitions. [2022-11-25 16:57:47,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4424019607843137 [2022-11-25 16:57:47,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1083 transitions. [2022-11-25 16:57:47,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1083 transitions. [2022-11-25 16:57:47,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:57:47,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1083 transitions. [2022-11-25 16:57:47,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.0) internal successors, (1083), 3 states have internal predecessors, (1083), 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) [2022-11-25 16:57:47,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2022-11-25 16:57:47,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2022-11-25 16:57:47,034 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 317 flow. Second operand 3 states and 1083 transitions. [2022-11-25 16:57:47,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 455 flow [2022-11-25 16:57:47,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 425 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-25 16:57:47,043 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 287 flow [2022-11-25 16:57:47,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2022-11-25 16:57:47,046 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2022-11-25 16:57:47,046 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 287 flow [2022-11-25 16:57:47,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.3333333333333) internal successors, (1033), 3 states have internal predecessors, (1033), 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) [2022-11-25 16:57:47,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:57:47,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:57:47,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:57:47,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:57:47,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:57:47,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1536178539, now seen corresponding path program 1 times [2022-11-25 16:57:47,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:57:47,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745179150] [2022-11-25 16:57:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:47,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:57:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:57:47,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:57:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745179150] [2022-11-25 16:57:47,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745179150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:57:47,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:57:47,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:57:47,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658069388] [2022-11-25 16:57:47,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:57:47,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:57:47,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:57:47,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:57:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:57:47,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 816 [2022-11-25 16:57:47,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 342.25) internal successors, (1369), 4 states have internal predecessors, (1369), 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) [2022-11-25 16:57:47,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:47,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 816 [2022-11-25 16:57:47,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:57:51,206 INFO L130 PetriNetUnfolder]: 18445/23779 cut-off events. [2022-11-25 16:57:51,206 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-25 16:57:51,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47592 conditions, 23779 events. 18445/23779 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 128233 event pairs, 9596 based on Foata normal form. 2/9789 useless extension candidates. Maximal degree in co-relation 47574. Up to 23370 conditions per place. [2022-11-25 16:57:51,359 INFO L137 encePairwiseOnDemand]: 805/816 looper letters, 58 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2022-11-25 16:57:51,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 423 flow [2022-11-25 16:57:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:57:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:57:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1425 transitions. [2022-11-25 16:57:51,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4365808823529412 [2022-11-25 16:57:51,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1425 transitions. [2022-11-25 16:57:51,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1425 transitions. [2022-11-25 16:57:51,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:57:51,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1425 transitions. [2022-11-25 16:57:51,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 356.25) internal successors, (1425), 4 states have internal predecessors, (1425), 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) [2022-11-25 16:57:51,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 816.0) internal successors, (4080), 5 states have internal predecessors, (4080), 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) [2022-11-25 16:57:51,383 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 816.0) internal successors, (4080), 5 states have internal predecessors, (4080), 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) [2022-11-25 16:57:51,384 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 287 flow. Second operand 4 states and 1425 transitions. [2022-11-25 16:57:51,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 423 flow [2022-11-25 16:57:51,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 419 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 16:57:51,389 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 325 flow [2022-11-25 16:57:51,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2022-11-25 16:57:51,393 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2022-11-25 16:57:51,394 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 325 flow [2022-11-25 16:57:51,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 342.25) internal successors, (1369), 4 states have internal predecessors, (1369), 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) [2022-11-25 16:57:51,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:57:51,395 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 16:57:51,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:57:51,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:57:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:57:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash 375180859, now seen corresponding path program 2 times [2022-11-25 16:57:51,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:57:51,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9606406] [2022-11-25 16:57:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:51,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:57:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:51,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:57:51,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9606406] [2022-11-25 16:57:51,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9606406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:57:51,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431145534] [2022-11-25 16:57:51,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:57:51,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:51,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:57:51,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:57:51,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:57:51,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 16:57:51,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:57:51,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:57:51,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:57:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 16:57:51,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:57:51,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431145534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:57:51,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:57:51,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 16:57:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801142278] [2022-11-25 16:57:51,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:57:51,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:57:51,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:57:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:57:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:57:51,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 816 [2022-11-25 16:57:51,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 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) [2022-11-25 16:57:51,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:51,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 816 [2022-11-25 16:57:51,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:57:55,135 INFO L130 PetriNetUnfolder]: 18445/23778 cut-off events. [2022-11-25 16:57:55,135 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-25 16:57:55,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47620 conditions, 23778 events. 18445/23778 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 128081 event pairs, 9596 based on Foata normal form. 1/9787 useless extension candidates. Maximal degree in co-relation 47510. Up to 23373 conditions per place. [2022-11-25 16:57:55,330 INFO L137 encePairwiseOnDemand]: 813/816 looper letters, 64 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2022-11-25 16:57:55,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 453 flow [2022-11-25 16:57:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:57:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:57:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1099 transitions. [2022-11-25 16:57:55,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44893790849673204 [2022-11-25 16:57:55,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1099 transitions. [2022-11-25 16:57:55,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1099 transitions. [2022-11-25 16:57:55,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:57:55,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1099 transitions. [2022-11-25 16:57:55,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.3333333333333) internal successors, (1099), 3 states have internal predecessors, (1099), 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) [2022-11-25 16:57:55,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2022-11-25 16:57:55,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 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) [2022-11-25 16:57:55,358 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 325 flow. Second operand 3 states and 1099 transitions. [2022-11-25 16:57:55,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 453 flow [2022-11-25 16:57:55,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 429 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 16:57:55,366 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 301 flow [2022-11-25 16:57:55,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2022-11-25 16:57:55,370 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2022-11-25 16:57:55,370 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 301 flow [2022-11-25 16:57:55,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 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) [2022-11-25 16:57:55,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:57:55,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:57:55,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:57:55,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 16:57:55,578 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:57:55,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:57:55,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1201994743, now seen corresponding path program 1 times [2022-11-25 16:57:55,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:57:55,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492662772] [2022-11-25 16:57:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:55,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:57:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:57:56,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:57:56,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492662772] [2022-11-25 16:57:56,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492662772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:57:56,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129441301] [2022-11-25 16:57:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:56,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:56,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:57:56,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:57:56,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:57:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:56,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 16:57:56,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:57:56,396 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 [2022-11-25 16:57:56,422 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 [2022-11-25 16:57:56,613 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 16:57:56,614 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 [2022-11-25 16:57:56,650 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 16 treesize of output 18 [2022-11-25 16:57:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:57:56,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:57:56,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:57:56,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-25 16:57:56,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:57:56,775 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 39 treesize of output 37 [2022-11-25 16:57:56,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-11-25 16:57:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:57:56,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129441301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:57:56,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:57:56,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-25 16:57:56,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869109322] [2022-11-25 16:57:56,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:57:56,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:57:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:57:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:57:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2022-11-25 16:57:57,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 816 [2022-11-25 16:57:57,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 301 flow. Second operand has 13 states, 13 states have (on average 299.2307692307692) internal successors, (3890), 13 states have internal predecessors, (3890), 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) [2022-11-25 16:57:57,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:57,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 816 [2022-11-25 16:57:57,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:01,096 INFO L130 PetriNetUnfolder]: 18445/23774 cut-off events. [2022-11-25 16:58:01,096 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-11-25 16:58:01,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47601 conditions, 23774 events. 18445/23774 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 128242 event pairs, 9596 based on Foata normal form. 0/9786 useless extension candidates. Maximal degree in co-relation 47547. Up to 23337 conditions per place. [2022-11-25 16:58:01,232 INFO L137 encePairwiseOnDemand]: 808/816 looper letters, 55 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2022-11-25 16:58:01,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 433 flow [2022-11-25 16:58:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:58:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:58:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1842 transitions. [2022-11-25 16:58:01,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3762254901960784 [2022-11-25 16:58:01,241 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1842 transitions. [2022-11-25 16:58:01,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1842 transitions. [2022-11-25 16:58:01,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:01,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1842 transitions. [2022-11-25 16:58:01,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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) [2022-11-25 16:58:01,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:58:01,263 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:58:01,264 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 301 flow. Second operand 6 states and 1842 transitions. [2022-11-25 16:58:01,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 433 flow [2022-11-25 16:58:01,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 423 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:58:01,268 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 313 flow [2022-11-25 16:58:01,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2022-11-25 16:58:01,269 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2022-11-25 16:58:01,269 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 313 flow [2022-11-25 16:58:01,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 299.2307692307692) internal successors, (3890), 13 states have internal predecessors, (3890), 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) [2022-11-25 16:58:01,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:01,272 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:01,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:01,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:01,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:58:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1201994734, now seen corresponding path program 1 times [2022-11-25 16:58:01,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:01,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964908983] [2022-11-25 16:58:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:01,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:58:02,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:02,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964908983] [2022-11-25 16:58:02,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964908983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:58:02,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204707527] [2022-11-25 16:58:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:02,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:02,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:02,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:58:02,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:58:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:02,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 16:58:02,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:02,236 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 [2022-11-25 16:58:02,276 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 [2022-11-25 16:58:02,300 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 16:58:02,300 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 [2022-11-25 16:58:02,331 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 [2022-11-25 16:58:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:58:02,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:58:02,375 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_278 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_278) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-11-25 16:58:02,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:58:02,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-25 16:58:02,440 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:58:02,440 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 33 treesize of output 31 [2022-11-25 16:58:02,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-25 16:58:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-25 16:58:02,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204707527] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:58:02,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:58:02,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 16:58:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345939233] [2022-11-25 16:58:02,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:58:02,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 16:58:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 16:58:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2022-11-25 16:58:02,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 816 [2022-11-25 16:58:02,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 313 flow. Second operand has 12 states, 12 states have (on average 299.25) internal successors, (3591), 12 states have internal predecessors, (3591), 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) [2022-11-25 16:58:02,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:02,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 816 [2022-11-25 16:58:02,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:05,929 INFO L130 PetriNetUnfolder]: 18445/23770 cut-off events. [2022-11-25 16:58:05,929 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-25 16:58:05,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47600 conditions, 23770 events. 18445/23770 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 128039 event pairs, 9596 based on Foata normal form. 0/9790 useless extension candidates. Maximal degree in co-relation 47490. Up to 23337 conditions per place. [2022-11-25 16:58:06,078 INFO L137 encePairwiseOnDemand]: 808/816 looper letters, 54 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2022-11-25 16:58:06,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 443 flow [2022-11-25 16:58:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:58:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:58:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1841 transitions. [2022-11-25 16:58:06,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37602124183006536 [2022-11-25 16:58:06,086 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1841 transitions. [2022-11-25 16:58:06,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1841 transitions. [2022-11-25 16:58:06,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:06,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1841 transitions. [2022-11-25 16:58:06,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 306.8333333333333) internal successors, (1841), 6 states have internal predecessors, (1841), 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) [2022-11-25 16:58:06,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:58:06,103 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:58:06,103 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 313 flow. Second operand 6 states and 1841 transitions. [2022-11-25 16:58:06,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 443 flow [2022-11-25 16:58:06,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 416 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-25 16:58:06,107 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 308 flow [2022-11-25 16:58:06,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2022-11-25 16:58:06,110 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2022-11-25 16:58:06,110 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 308 flow [2022-11-25 16:58:06,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 299.25) internal successors, (3591), 12 states have internal predecessors, (3591), 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) [2022-11-25 16:58:06,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:06,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:06,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:06,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:06,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:58:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1201994727, now seen corresponding path program 1 times [2022-11-25 16:58:06,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831230601] [2022-11-25 16:58:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:07,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:07,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831230601] [2022-11-25 16:58:07,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831230601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:58:07,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339531308] [2022-11-25 16:58:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:07,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:07,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:07,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:58:07,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:58:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:07,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 16:58:07,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:07,369 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-25 16:58:07,369 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-25 16:58:07,404 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 [2022-11-25 16:58:07,444 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 16:58:07,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 16:58:07,487 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 [2022-11-25 16:58:07,529 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 16:58:07,530 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 [2022-11-25 16:58:07,556 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 [2022-11-25 16:58:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:07,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:58:07,589 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_335 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_335) c_~A~0.base) c_~A~0.offset) 2147483648)) is different from false [2022-11-25 16:58:07,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:58:07,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-11-25 16:58:07,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:58:07,738 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 125 treesize of output 119 [2022-11-25 16:58:07,746 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 [2022-11-25 16:58:07,755 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 [2022-11-25 16:58:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-25 16:58:07,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339531308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:58:07,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:58:07,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-25 16:58:07,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492887094] [2022-11-25 16:58:07,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:58:07,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 16:58:07,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 16:58:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=168, Unknown=2, NotChecked=26, Total=240 [2022-11-25 16:58:08,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 816 [2022-11-25 16:58:08,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 308 flow. Second operand has 16 states, 16 states have (on average 299.1875) internal successors, (4787), 16 states have internal predecessors, (4787), 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) [2022-11-25 16:58:08,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:08,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 816 [2022-11-25 16:58:08,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:11,249 INFO L130 PetriNetUnfolder]: 18445/23766 cut-off events. [2022-11-25 16:58:11,250 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-25 16:58:11,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47587 conditions, 23766 events. 18445/23766 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 128054 event pairs, 9596 based on Foata normal form. 0/9790 useless extension candidates. Maximal degree in co-relation 47468. Up to 23337 conditions per place. [2022-11-25 16:58:11,376 INFO L137 encePairwiseOnDemand]: 808/816 looper letters, 53 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2022-11-25 16:58:11,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 70 transitions, 436 flow [2022-11-25 16:58:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:58:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:58:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1840 transitions. [2022-11-25 16:58:11,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3758169934640523 [2022-11-25 16:58:11,383 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1840 transitions. [2022-11-25 16:58:11,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1840 transitions. [2022-11-25 16:58:11,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:11,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1840 transitions. [2022-11-25 16:58:11,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 306.6666666666667) internal successors, (1840), 6 states have internal predecessors, (1840), 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) [2022-11-25 16:58:11,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:58:11,399 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:58:11,399 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 308 flow. Second operand 6 states and 1840 transitions. [2022-11-25 16:58:11,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 70 transitions, 436 flow [2022-11-25 16:58:11,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 410 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 16:58:11,403 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 304 flow [2022-11-25 16:58:11,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2022-11-25 16:58:11,404 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2022-11-25 16:58:11,404 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 304 flow [2022-11-25 16:58:11,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 299.1875) internal successors, (4787), 16 states have internal predecessors, (4787), 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) [2022-11-25 16:58:11,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:11,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:11,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 16:58:11,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 16:58:11,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:58:11,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:11,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1201994726, now seen corresponding path program 1 times [2022-11-25 16:58:11,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:11,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508890295] [2022-11-25 16:58:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:11,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:12,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:12,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508890295] [2022-11-25 16:58:12,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508890295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:58:12,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266836300] [2022-11-25 16:58:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:12,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:12,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:12,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:58:12,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 16:58:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:12,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 16:58:12,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:12,333 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-25 16:58:12,333 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-25 16:58:12,368 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 [2022-11-25 16:58:12,398 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 16:58:12,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 16:58:12,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 16:58:12,464 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 16:58:12,464 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 [2022-11-25 16:58:12,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 16:58:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:58:12,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:58:12,688 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:58:12,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-25 16:58:12,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:58:12,703 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 73 treesize of output 71 [2022-11-25 16:58:12,710 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 56 treesize of output 52 [2022-11-25 16:58:12,721 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 26 treesize of output 24 [2022-11-25 16:58:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:12,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266836300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:58:12,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:58:12,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 14 [2022-11-25 16:58:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825425193] [2022-11-25 16:58:12,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:58:12,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 16:58:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 16:58:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=179, Unknown=6, NotChecked=0, Total=240 [2022-11-25 16:58:13,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 816 [2022-11-25 16:58:13,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 304 flow. Second operand has 16 states, 16 states have (on average 299.125) internal successors, (4786), 16 states have internal predecessors, (4786), 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) [2022-11-25 16:58:13,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:13,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 816 [2022-11-25 16:58:13,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:16,433 INFO L130 PetriNetUnfolder]: 18445/23762 cut-off events. [2022-11-25 16:58:16,433 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-25 16:58:16,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47575 conditions, 23762 events. 18445/23762 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 128047 event pairs, 9596 based on Foata normal form. 4/9790 useless extension candidates. Maximal degree in co-relation 47456. Up to 23337 conditions per place. [2022-11-25 16:58:16,549 INFO L137 encePairwiseOnDemand]: 808/816 looper letters, 52 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2022-11-25 16:58:16,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 430 flow [2022-11-25 16:58:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:58:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:58:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1839 transitions. [2022-11-25 16:58:16,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3756127450980392 [2022-11-25 16:58:16,554 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1839 transitions. [2022-11-25 16:58:16,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1839 transitions. [2022-11-25 16:58:16,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:16,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1839 transitions. [2022-11-25 16:58:16,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 306.5) internal successors, (1839), 6 states have internal predecessors, (1839), 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) [2022-11-25 16:58:16,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:58:16,569 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 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) [2022-11-25 16:58:16,570 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 304 flow. Second operand 6 states and 1839 transitions. [2022-11-25 16:58:16,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 430 flow [2022-11-25 16:58:16,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 412 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-25 16:58:16,573 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 308 flow [2022-11-25 16:58:16,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2022-11-25 16:58:16,574 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2022-11-25 16:58:16,575 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 308 flow [2022-11-25 16:58:16,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 299.125) internal successors, (4786), 16 states have internal predecessors, (4786), 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) [2022-11-25 16:58:16,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:16,578 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-11-25 16:58:16,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 16:58:16,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:16,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:58:16,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1392008933, now seen corresponding path program 1 times [2022-11-25 16:58:16,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:16,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733241124] [2022-11-25 16:58:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:58:16,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:16,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733241124] [2022-11-25 16:58:16,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733241124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:58:16,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991394378] [2022-11-25 16:58:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:16,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:16,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:16,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:58:16,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 16:58:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:17,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:58:17,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 16:58:17,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:58:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 16:58:17,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991394378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:58:17,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:58:17,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-11-25 16:58:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858510489] [2022-11-25 16:58:17,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:58:17,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 16:58:17,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:17,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 16:58:17,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-25 16:58:17,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 816 [2022-11-25 16:58:17,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 308 flow. Second operand has 14 states, 14 states have (on average 336.2857142857143) internal successors, (4708), 14 states have internal predecessors, (4708), 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) [2022-11-25 16:58:17,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:17,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 816 [2022-11-25 16:58:17,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:21,566 INFO L130 PetriNetUnfolder]: 21460/27707 cut-off events. [2022-11-25 16:58:21,566 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-11-25 16:58:21,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55531 conditions, 27707 events. 21460/27707 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 149639 event pairs, 11255 based on Foata normal form. 2/11553 useless extension candidates. Maximal degree in co-relation 44880. Up to 17055 conditions per place. [2022-11-25 16:58:21,746 INFO L137 encePairwiseOnDemand]: 806/816 looper letters, 122 selfloop transitions, 22 changer transitions 0/148 dead transitions. [2022-11-25 16:58:21,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 148 transitions, 799 flow [2022-11-25 16:58:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:58:21,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:58:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3153 transitions. [2022-11-25 16:58:21,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4293300653594771 [2022-11-25 16:58:21,754 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3153 transitions. [2022-11-25 16:58:21,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3153 transitions. [2022-11-25 16:58:21,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:21,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3153 transitions. [2022-11-25 16:58:21,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 350.3333333333333) internal successors, (3153), 9 states have internal predecessors, (3153), 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) [2022-11-25 16:58:21,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 816.0) internal successors, (8160), 10 states have internal predecessors, (8160), 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) [2022-11-25 16:58:21,780 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 816.0) internal successors, (8160), 10 states have internal predecessors, (8160), 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) [2022-11-25 16:58:21,781 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 308 flow. Second operand 9 states and 3153 transitions. [2022-11-25 16:58:21,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 148 transitions, 799 flow [2022-11-25 16:58:21,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 148 transitions, 763 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 16:58:21,786 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 369 flow [2022-11-25 16:58:21,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=369, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2022-11-25 16:58:21,788 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 4 predicate places. [2022-11-25 16:58:21,788 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 369 flow [2022-11-25 16:58:21,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 336.2857142857143) internal successors, (4708), 14 states have internal predecessors, (4708), 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) [2022-11-25 16:58:21,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:21,790 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2022-11-25 16:58:21,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 16:58:21,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:21,997 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-25 16:58:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1165051271, now seen corresponding path program 2 times [2022-11-25 16:58:21,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:21,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023035795] [2022-11-25 16:58:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:21,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 16:58:22,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:22,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023035795] [2022-11-25 16:58:22,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023035795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:58:22,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027820659] [2022-11-25 16:58:22,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:58:22,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:58:22,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:22,128 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:58:22,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8479dbdd-1992-4b8a-acd8-3c00cab30658/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 16:58:22,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 16:58:22,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:58:22,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:58:22,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:58:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 16:58:22,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:58:22,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027820659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:22,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:58:22,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2022-11-25 16:58:22,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090430485] [2022-11-25 16:58:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:22,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:58:22,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:58:22,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:58:22,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 816 [2022-11-25 16:58:22,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 348.25) internal successors, (1393), 4 states have internal predecessors, (1393), 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) [2022-11-25 16:58:22,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:22,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 816 [2022-11-25 16:58:22,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand