./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:55:23,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:55:23,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:55:23,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:55:23,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:55:23,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:55:23,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:55:23,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:55:23,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:55:23,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:55:23,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:55:23,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:55:23,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:55:23,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:55:23,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:55:23,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:55:23,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:55:23,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:55:23,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:55:23,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:55:23,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:55:23,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:55:23,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:55:23,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:55:23,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:55:23,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:55:23,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:55:23,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:55:23,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:55:23,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:55:23,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:55:23,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:55:23,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:55:23,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:55:23,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:55:23,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:55:23,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:55:23,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:55:23,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:55:23,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:55:23,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:55:23,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:55:23,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:55:23,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:55:23,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:55:23,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:55:23,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:55:23,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:55:23,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:55:23,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:55:23,839 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:55:23,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:55:23,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:55:23,841 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:55:23,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:55:23,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:55:23,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:55:23,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:55:23,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:55:23,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:55:23,843 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:55:23,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:55:23,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:55:23,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:55:23,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:55:23,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:55:23,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:55:23,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:55:23,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:23,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:55:23,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:55:23,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:55:23,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:55:23,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:55:23,847 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:55:23,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:55:23,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:55:23,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2022-11-20 10:55:24,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:55:24,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:55:24,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:55:24,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:55:24,277 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:55:24,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-20 10:55:27,352 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:55:27,626 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:55:27,627 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-20 10:55:27,644 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/data/9037dbc02/f09f30365a31488a9b3be8c4091039b0/FLAGf601d3da6 [2022-11-20 10:55:27,663 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/data/9037dbc02/f09f30365a31488a9b3be8c4091039b0 [2022-11-20 10:55:27,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:55:27,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:55:27,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:55:27,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:55:27,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:55:27,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:27" (1/1) ... [2022-11-20 10:55:27,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbc6c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:27, skipping insertion in model container [2022-11-20 10:55:27,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:27" (1/1) ... [2022-11-20 10:55:27,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:55:27,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:55:27,976 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_ce916489-5127-4ff5-bfab-598ff3b4c879/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-20 10:55:27,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:55:27,994 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:55:28,023 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_ce916489-5127-4ff5-bfab-598ff3b4c879/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-20 10:55:28,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:55:28,047 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:55:28,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28 WrapperNode [2022-11-20 10:55:28,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:55:28,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:55:28,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:55:28,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:55:28,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,101 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 303 [2022-11-20 10:55:28,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:55:28,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:55:28,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:55:28,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:55:28,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:55:28,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:55:28,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:55:28,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:55:28,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:28,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:28,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:55:28,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:55:28,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:55:28,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:55:28,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:55:28,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:55:28,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:55:28,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:55:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:55:28,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:55:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:55:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:55:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:55:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:55:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:55:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:55:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:55:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:55:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:55:28,257 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:55:28,425 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:55:28,429 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:55:29,112 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:55:30,058 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:55:30,058 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:55:30,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:30 BoogieIcfgContainer [2022-11-20 10:55:30,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:55:30,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:55:30,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:55:30,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:55:30,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:55:27" (1/3) ... [2022-11-20 10:55:30,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b105605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:30, skipping insertion in model container [2022-11-20 10:55:30,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (2/3) ... [2022-11-20 10:55:30,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b105605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:30, skipping insertion in model container [2022-11-20 10:55:30,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:30" (3/3) ... [2022-11-20 10:55:30,070 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-11-20 10:55:30,080 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:55:30,091 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:55:30,091 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-20 10:55:30,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:55:30,450 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:55:30,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 321 transitions, 666 flow [2022-11-20 10:55:30,688 INFO L130 PetriNetUnfolder]: 23/318 cut-off events. [2022-11-20 10:55:30,688 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:55:30,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 23/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 790 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-11-20 10:55:30,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 321 transitions, 666 flow [2022-11-20 10:55:30,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 294 transitions, 606 flow [2022-11-20 10:55:30,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:55:30,728 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;@66ebb5d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:55:30,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-11-20 10:55:30,741 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-20 10:55:30,741 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:55:30,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:30,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:30,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-20 10:55:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash 519815807, now seen corresponding path program 1 times [2022-11-20 10:55:30,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:30,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183772552] [2022-11-20 10:55:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:30,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:31,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:31,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183772552] [2022-11-20 10:55:31,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183772552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:31,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:31,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:55:31,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194498299] [2022-11-20 10:55:31,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:31,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:55:31,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:31,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:55:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:55:31,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-20 10:55:31,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 294 transitions, 606 flow. Second operand has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:31,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:31,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-20 10:55:31,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:31,907 INFO L130 PetriNetUnfolder]: 77/627 cut-off events. [2022-11-20 10:55:31,908 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-20 10:55:31,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 627 events. 77/627 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3124 event pairs, 28 based on Foata normal form. 90/547 useless extension candidates. Maximal degree in co-relation 451. Up to 69 conditions per place. [2022-11-20 10:55:31,927 INFO L137 encePairwiseOnDemand]: 296/321 looper letters, 42 selfloop transitions, 4 changer transitions 3/296 dead transitions. [2022-11-20 10:55:31,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 296 transitions, 720 flow [2022-11-20 10:55:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:55:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:55:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1459 transitions. [2022-11-20 10:55:31,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9090342679127725 [2022-11-20 10:55:31,953 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1459 transitions. [2022-11-20 10:55:31,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1459 transitions. [2022-11-20 10:55:31,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:31,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1459 transitions. [2022-11-20 10:55:31,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.8) internal successors, (1459), 5 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:31,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:31,984 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:31,986 INFO L175 Difference]: Start difference. First operand has 283 places, 294 transitions, 606 flow. Second operand 5 states and 1459 transitions. [2022-11-20 10:55:31,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 296 transitions, 720 flow [2022-11-20 10:55:31,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 296 transitions, 696 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 10:55:32,007 INFO L231 Difference]: Finished difference. Result has 276 places, 275 transitions, 580 flow [2022-11-20 10:55:32,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=276, PETRI_TRANSITIONS=275} [2022-11-20 10:55:32,013 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, -7 predicate places. [2022-11-20 10:55:32,014 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 275 transitions, 580 flow [2022-11-20 10:55:32,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:32,016 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:32,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:55:32,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-20 10:55:32,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:32,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1358057142, now seen corresponding path program 1 times [2022-11-20 10:55:32,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:32,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421400404] [2022-11-20 10:55:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:32,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:32,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:32,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421400404] [2022-11-20 10:55:32,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421400404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:32,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748743989] [2022-11-20 10:55:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:32,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:32,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:32,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:32,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:55:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:32,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:55:32,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:32,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:32,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748743989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:32,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:32,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:55:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076505224] [2022-11-20 10:55:32,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:32,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:55:32,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:55:32,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:55:32,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-20 10:55:32,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 275 transitions, 580 flow. Second operand has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:32,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:32,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-20 10:55:32,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:33,955 INFO L130 PetriNetUnfolder]: 191/1483 cut-off events. [2022-11-20 10:55:33,955 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2022-11-20 10:55:33,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 1483 events. 191/1483 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10266 event pairs, 70 based on Foata normal form. 3/1076 useless extension candidates. Maximal degree in co-relation 1436. Up to 64 conditions per place. [2022-11-20 10:55:33,984 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 93 selfloop transitions, 18 changer transitions 0/358 dead transitions. [2022-11-20 10:55:33,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 358 transitions, 1014 flow [2022-11-20 10:55:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:55:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:55:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5064 transitions. [2022-11-20 10:55:33,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764278296988577 [2022-11-20 10:55:33,994 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5064 transitions. [2022-11-20 10:55:33,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5064 transitions. [2022-11-20 10:55:33,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:33,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5064 transitions. [2022-11-20 10:55:34,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 281.3333333333333) internal successors, (5064), 18 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,026 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,027 INFO L175 Difference]: Start difference. First operand has 276 places, 275 transitions, 580 flow. Second operand 18 states and 5064 transitions. [2022-11-20 10:55:34,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 358 transitions, 1014 flow [2022-11-20 10:55:34,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 358 transitions, 1012 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:55:34,039 INFO L231 Difference]: Finished difference. Result has 293 places, 287 transitions, 684 flow [2022-11-20 10:55:34,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=684, PETRI_PLACES=293, PETRI_TRANSITIONS=287} [2022-11-20 10:55:34,041 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 10 predicate places. [2022-11-20 10:55:34,042 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 287 transitions, 684 flow [2022-11-20 10:55:34,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:34,046 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:34,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:34,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:34,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-20 10:55:34,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash 849902484, now seen corresponding path program 1 times [2022-11-20 10:55:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:34,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587307182] [2022-11-20 10:55:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:34,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:34,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:34,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587307182] [2022-11-20 10:55:34,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587307182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:34,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66583724] [2022-11-20 10:55:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:34,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:34,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:34,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:34,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:55:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:34,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:55:34,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:34,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:55:34,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66583724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:34,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:55:34,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:55:34,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553476033] [2022-11-20 10:55:34,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:34,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:55:34,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:34,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:55:34,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:55:34,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-20 10:55:34,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 287 transitions, 684 flow. Second operand has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:34,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:34,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-20 10:55:34,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:35,750 INFO L130 PetriNetUnfolder]: 191/1479 cut-off events. [2022-11-20 10:55:35,750 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-11-20 10:55:35,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1479 events. 191/1479 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10111 event pairs, 70 based on Foata normal form. 4/1073 useless extension candidates. Maximal degree in co-relation 1481. Up to 240 conditions per place. [2022-11-20 10:55:35,787 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 43 selfloop transitions, 11 changer transitions 0/301 dead transitions. [2022-11-20 10:55:35,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 301 transitions, 809 flow [2022-11-20 10:55:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:55:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1971 transitions. [2022-11-20 10:55:35,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.87716955941255 [2022-11-20 10:55:35,798 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1971 transitions. [2022-11-20 10:55:35,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1971 transitions. [2022-11-20 10:55:35,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:35,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1971 transitions. [2022-11-20 10:55:35,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.57142857142856) internal successors, (1971), 7 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:35,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:35,812 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:35,812 INFO L175 Difference]: Start difference. First operand has 293 places, 287 transitions, 684 flow. Second operand 7 states and 1971 transitions. [2022-11-20 10:55:35,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 301 transitions, 809 flow [2022-11-20 10:55:35,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 301 transitions, 777 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 10:55:35,822 INFO L231 Difference]: Finished difference. Result has 289 places, 283 transitions, 647 flow [2022-11-20 10:55:35,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=289, PETRI_TRANSITIONS=283} [2022-11-20 10:55:35,826 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 6 predicate places. [2022-11-20 10:55:35,826 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 283 transitions, 647 flow [2022-11-20 10:55:35,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:35,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:35,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:35,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:36,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:36,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-20 10:55:36,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1121272946, now seen corresponding path program 1 times [2022-11-20 10:55:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86037766] [2022-11-20 10:55:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:36,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:36,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:36,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86037766] [2022-11-20 10:55:36,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86037766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:36,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:36,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:55:36,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200127880] [2022-11-20 10:55:36,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:36,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:55:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:55:36,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:55:36,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 321 [2022-11-20 10:55:36,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 283 transitions, 647 flow. Second operand has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:36,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:36,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 321 [2022-11-20 10:55:36,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:37,908 INFO L130 PetriNetUnfolder]: 609/3471 cut-off events. [2022-11-20 10:55:37,909 INFO L131 PetriNetUnfolder]: For 149/161 co-relation queries the response was YES. [2022-11-20 10:55:37,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 3471 events. 609/3471 cut-off events. For 149/161 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 29055 event pairs, 409 based on Foata normal form. 0/2370 useless extension candidates. Maximal degree in co-relation 4096. Up to 949 conditions per place. [2022-11-20 10:55:38,003 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 69 selfloop transitions, 8 changer transitions 0/315 dead transitions. [2022-11-20 10:55:38,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 315 transitions, 873 flow [2022-11-20 10:55:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:55:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:55:38,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2176 transitions. [2022-11-20 10:55:38,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8473520249221184 [2022-11-20 10:55:38,010 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2176 transitions. [2022-11-20 10:55:38,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2176 transitions. [2022-11-20 10:55:38,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:38,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2176 transitions. [2022-11-20 10:55:38,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:38,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:38,025 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:38,026 INFO L175 Difference]: Start difference. First operand has 289 places, 283 transitions, 647 flow. Second operand 8 states and 2176 transitions. [2022-11-20 10:55:38,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 315 transitions, 873 flow [2022-11-20 10:55:38,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 315 transitions, 859 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:55:38,037 INFO L231 Difference]: Finished difference. Result has 294 places, 285 transitions, 665 flow [2022-11-20 10:55:38,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=665, PETRI_PLACES=294, PETRI_TRANSITIONS=285} [2022-11-20 10:55:38,039 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 11 predicate places. [2022-11-20 10:55:38,040 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 285 transitions, 665 flow [2022-11-20 10:55:38,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:38,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:38,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:38,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:55:38,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-20 10:55:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash 456301925, now seen corresponding path program 1 times [2022-11-20 10:55:38,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:38,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247165267] [2022-11-20 10:55:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:38,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:38,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:38,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247165267] [2022-11-20 10:55:38,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247165267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:38,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:38,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:55:38,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807459433] [2022-11-20 10:55:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:38,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:55:38,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:38,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:55:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:55:38,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 321 [2022-11-20 10:55:38,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 285 transitions, 665 flow. Second operand has 10 states, 10 states have (on average 246.8) internal successors, (2468), 10 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:38,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:38,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 321 [2022-11-20 10:55:38,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:40,756 INFO L130 PetriNetUnfolder]: 1946/6302 cut-off events. [2022-11-20 10:55:40,757 INFO L131 PetriNetUnfolder]: For 615/627 co-relation queries the response was YES. [2022-11-20 10:55:40,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 6302 events. 1946/6302 cut-off events. For 615/627 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 53986 event pairs, 884 based on Foata normal form. 12/4194 useless extension candidates. Maximal degree in co-relation 8685. Up to 2287 conditions per place. [2022-11-20 10:55:40,861 INFO L137 encePairwiseOnDemand]: 308/321 looper letters, 73 selfloop transitions, 12 changer transitions 0/313 dead transitions. [2022-11-20 10:55:40,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 313 transitions, 903 flow [2022-11-20 10:55:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:55:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:55:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3008 transitions. [2022-11-20 10:55:40,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7808930425752856 [2022-11-20 10:55:40,870 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3008 transitions. [2022-11-20 10:55:40,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3008 transitions. [2022-11-20 10:55:40,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:40,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3008 transitions. [2022-11-20 10:55:40,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:40,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 321.0) internal successors, (4173), 13 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:40,898 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 321.0) internal successors, (4173), 13 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:40,907 INFO L175 Difference]: Start difference. First operand has 294 places, 285 transitions, 665 flow. Second operand 12 states and 3008 transitions. [2022-11-20 10:55:40,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 313 transitions, 903 flow [2022-11-20 10:55:40,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 313 transitions, 893 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:55:40,915 INFO L231 Difference]: Finished difference. Result has 307 places, 290 transitions, 714 flow [2022-11-20 10:55:40,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=714, PETRI_PLACES=307, PETRI_TRANSITIONS=290} [2022-11-20 10:55:40,918 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 24 predicate places. [2022-11-20 10:55:40,920 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 290 transitions, 714 flow [2022-11-20 10:55:40,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.8) internal successors, (2468), 10 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:40,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:40,923 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:40,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:55:40,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-20 10:55:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash 601016725, now seen corresponding path program 1 times [2022-11-20 10:55:40,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:40,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529995950] [2022-11-20 10:55:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:41,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529995950] [2022-11-20 10:55:41,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529995950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:41,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:41,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:55:41,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676533360] [2022-11-20 10:55:41,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:41,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:55:41,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:41,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:55:41,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:55:41,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 321 [2022-11-20 10:55:41,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 290 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:41,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:41,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 321 [2022-11-20 10:55:41,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:44,993 INFO L130 PetriNetUnfolder]: 3451/8987 cut-off events. [2022-11-20 10:55:44,994 INFO L131 PetriNetUnfolder]: For 1415/1427 co-relation queries the response was YES. [2022-11-20 10:55:45,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15360 conditions, 8987 events. 3451/8987 cut-off events. For 1415/1427 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 76805 event pairs, 2366 based on Foata normal form. 12/6114 useless extension candidates. Maximal degree in co-relation 14956. Up to 4739 conditions per place. [2022-11-20 10:55:45,127 INFO L137 encePairwiseOnDemand]: 309/321 looper letters, 71 selfloop transitions, 11 changer transitions 0/307 dead transitions. [2022-11-20 10:55:45,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 307 transitions, 926 flow [2022-11-20 10:55:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:55:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 10:55:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2487 transitions. [2022-11-20 10:55:45,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7747663551401869 [2022-11-20 10:55:45,138 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2487 transitions. [2022-11-20 10:55:45,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2487 transitions. [2022-11-20 10:55:45,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:45,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2487 transitions. [2022-11-20 10:55:45,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 248.7) internal successors, (2487), 10 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 321.0) internal successors, (3531), 11 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,154 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 321.0) internal successors, (3531), 11 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,155 INFO L175 Difference]: Start difference. First operand has 307 places, 290 transitions, 714 flow. Second operand 10 states and 2487 transitions. [2022-11-20 10:55:45,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 307 transitions, 926 flow [2022-11-20 10:55:45,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 307 transitions, 916 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:55:45,173 INFO L231 Difference]: Finished difference. Result has 314 places, 291 transitions, 735 flow [2022-11-20 10:55:45,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=735, PETRI_PLACES=314, PETRI_TRANSITIONS=291} [2022-11-20 10:55:45,177 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 31 predicate places. [2022-11-20 10:55:45,177 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 291 transitions, 735 flow [2022-11-20 10:55:45,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:45,179 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:45,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:55:45,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-20 10:55:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash -235587331, now seen corresponding path program 1 times [2022-11-20 10:55:45,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:45,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204458534] [2022-11-20 10:55:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:46,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204458534] [2022-11-20 10:55:46,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204458534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:46,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613203405] [2022-11-20 10:55:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:46,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:46,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:46,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:46,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce916489-5127-4ff5-bfab-598ff3b4c879/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:55:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:46,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 10:55:46,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:46,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 10:55:46,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:55:46,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:55:46,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 10:55:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:46,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:47,186 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_121) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-20 10:55:47,340 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_121) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456))) is different from false [2022-11-20 10:55:47,349 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_121) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-11-20 10:55:47,414 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:55:47,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-20 10:55:47,427 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:55:47,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-20 10:55:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-20 10:55:47,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613203405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:47,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:47,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 40 [2022-11-20 10:55:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857657640] [2022-11-20 10:55:47,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 10:55:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 10:55:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1279, Unknown=6, NotChecked=222, Total=1640 [2022-11-20 10:55:47,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 321 [2022-11-20 10:55:47,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 291 transitions, 735 flow. Second operand has 41 states, 41 states have (on average 226.0731707317073) internal successors, (9269), 41 states have internal predecessors, (9269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:47,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:47,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 321 [2022-11-20 10:55:47,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand