./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:19:03,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:19:03,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:19:03,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:19:03,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:19:03,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:19:03,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:19:03,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:19:03,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:19:03,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:19:03,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:19:03,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:19:03,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:19:03,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:19:03,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:19:03,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:19:03,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:19:03,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:19:03,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:19:03,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:19:03,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:19:03,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:19:03,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:19:03,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:19:03,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:19:03,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:19:03,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:19:03,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:19:03,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:19:03,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:19:03,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:19:03,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:19:03,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:19:03,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:19:03,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:19:03,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:19:03,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:19:03,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:19:03,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:19:03,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:19:03,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:19:03,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:19:03,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:19:03,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:19:03,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:19:03,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:19:03,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:19:03,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:19:03,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:19:03,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:19:03,845 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:19:03,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:19:03,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:19:03,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:19:03,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:19:03,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:19:03,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:19:03,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:19:03,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:19:03,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:19:03,849 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:19:03,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:19:03,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:19:03,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:19:03,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:19:03,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:19:03,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:19:03,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:19:03,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:19:03,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:19:03,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:19:03,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:19:03,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:19:03,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:19:03,855 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:19:03,855 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:19:03,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:19:03,855 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_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab [2022-11-18 20:19:04,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:19:04,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:19:04,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:19:04,213 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:19:04,225 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:19:04,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-18 20:19:04,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/data/4c2aa2bee/d69c8d00aac545a996cdfdbed2cfeb18/FLAGcde2aa125 [2022-11-18 20:19:04,818 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:19:04,819 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-18 20:19:04,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/data/4c2aa2bee/d69c8d00aac545a996cdfdbed2cfeb18/FLAGcde2aa125 [2022-11-18 20:19:05,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/data/4c2aa2bee/d69c8d00aac545a996cdfdbed2cfeb18 [2022-11-18 20:19:05,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:19:05,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:19:05,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:19:05,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:19:05,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:19:05,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6b7cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05, skipping insertion in model container [2022-11-18 20:19:05,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:19:05,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:19:05,418 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-18 20:19:05,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:19:05,433 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:19:05,460 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-18 20:19:05,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:19:05,479 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:19:05,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05 WrapperNode [2022-11-18 20:19:05,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:19:05,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:19:05,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:19:05,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:19:05,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,541 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 205 [2022-11-18 20:19:05,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:19:05,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:19:05,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:19:05,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:19:05,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:19:05,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:19:05,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:19:05,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:19:05,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:19:05,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:05,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:19:05,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:19:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:19:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:19:05,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:19:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:19:05,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:19:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:19:05,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:19:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:19:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:19:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:19:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:19:05,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:19:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:19:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:19:05,676 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:19:05,803 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:19:05,805 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:19:06,397 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:19:06,412 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:19:06,412 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:19:06,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:19:06 BoogieIcfgContainer [2022-11-18 20:19:06,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:19:06,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:19:06,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:19:06,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:19:06,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:19:05" (1/3) ... [2022-11-18 20:19:06,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1feabe8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:19:06, skipping insertion in model container [2022-11-18 20:19:06,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05" (2/3) ... [2022-11-18 20:19:06,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1feabe8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:19:06, skipping insertion in model container [2022-11-18 20:19:06,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:19:06" (3/3) ... [2022-11-18 20:19:06,431 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2022-11-18 20:19:06,440 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:19:06,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:19:06,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 20:19:06,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:19:06,697 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:19:06,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 277 transitions, 578 flow [2022-11-18 20:19:06,996 INFO L130 PetriNetUnfolder]: 19/274 cut-off events. [2022-11-18 20:19:06,996 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:19:07,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 274 events. 19/274 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 727 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2022-11-18 20:19:07,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 277 transitions, 578 flow [2022-11-18 20:19:07,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 253 transitions, 521 flow [2022-11-18 20:19:07,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:19:07,064 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;@210b9a6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:19:07,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-18 20:19:07,094 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-18 20:19:07,094 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:19:07,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:07,096 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] [2022-11-18 20:19:07,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2126661228, now seen corresponding path program 1 times [2022-11-18 20:19:07,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:07,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378699495] [2022-11-18 20:19:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:07,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:07,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:07,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378699495] [2022-11-18 20:19:07,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378699495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:07,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:07,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104593114] [2022-11-18 20:19:07,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:07,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:07,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:07,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:07,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:07,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-18 20:19:07,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 253 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:07,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:07,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-18 20:19:07,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:08,339 INFO L130 PetriNetUnfolder]: 113/666 cut-off events. [2022-11-18 20:19:08,339 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-11-18 20:19:08,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 666 events. 113/666 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3809 event pairs, 2 based on Foata normal form. 112/686 useless extension candidates. Maximal degree in co-relation 841. Up to 165 conditions per place. [2022-11-18 20:19:08,360 INFO L137 encePairwiseOnDemand]: 265/277 looper letters, 33 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-18 20:19:08,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 254 transitions, 617 flow [2022-11-18 20:19:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:08,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:19:08,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1475 transitions. [2022-11-18 20:19:08,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874849578820698 [2022-11-18 20:19:08,394 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1475 transitions. [2022-11-18 20:19:08,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1475 transitions. [2022-11-18 20:19:08,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:08,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1475 transitions. [2022-11-18 20:19:08,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:08,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:08,424 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:08,427 INFO L175 Difference]: Start difference. First operand has 245 places, 253 transitions, 521 flow. Second operand 6 states and 1475 transitions. [2022-11-18 20:19:08,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 254 transitions, 617 flow [2022-11-18 20:19:08,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 254 transitions, 598 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:19:08,446 INFO L231 Difference]: Finished difference. Result has 244 places, 246 transitions, 508 flow [2022-11-18 20:19:08,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=244, PETRI_TRANSITIONS=246} [2022-11-18 20:19:08,453 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, -1 predicate places. [2022-11-18 20:19:08,453 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 246 transitions, 508 flow [2022-11-18 20:19:08,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:08,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:08,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:08,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:19:08,458 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:08,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1501987942, now seen corresponding path program 1 times [2022-11-18 20:19:08,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:08,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037150815] [2022-11-18 20:19:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:08,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:08,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:08,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037150815] [2022-11-18 20:19:08,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037150815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:08,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:08,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:08,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717758072] [2022-11-18 20:19:08,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:08,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:08,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:08,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:08,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-18 20:19:08,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 246 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:08,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:08,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-18 20:19:08,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:08,994 INFO L130 PetriNetUnfolder]: 87/780 cut-off events. [2022-11-18 20:19:08,994 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-18 20:19:09,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 780 events. 87/780 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5092 event pairs, 24 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 668. Up to 71 conditions per place. [2022-11-18 20:19:09,011 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 37 selfloop transitions, 4 changer transitions 0/260 dead transitions. [2022-11-18 20:19:09,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 260 transitions, 626 flow [2022-11-18 20:19:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:19:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1003 transitions. [2022-11-18 20:19:09,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9052346570397112 [2022-11-18 20:19:09,015 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1003 transitions. [2022-11-18 20:19:09,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1003 transitions. [2022-11-18 20:19:09,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:09,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1003 transitions. [2022-11-18 20:19:09,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,024 INFO L175 Difference]: Start difference. First operand has 244 places, 246 transitions, 508 flow. Second operand 4 states and 1003 transitions. [2022-11-18 20:19:09,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 260 transitions, 626 flow [2022-11-18 20:19:09,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 260 transitions, 617 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:19:09,031 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 523 flow [2022-11-18 20:19:09,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-11-18 20:19:09,032 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 0 predicate places. [2022-11-18 20:19:09,032 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 523 flow [2022-11-18 20:19:09,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:09,034 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] [2022-11-18 20:19:09,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:19:09,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:09,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:09,035 INFO L85 PathProgramCache]: Analyzing trace with hash -664990514, now seen corresponding path program 1 times [2022-11-18 20:19:09,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:09,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752164947] [2022-11-18 20:19:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:09,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:09,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:09,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752164947] [2022-11-18 20:19:09,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752164947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:09,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:09,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:09,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854864670] [2022-11-18 20:19:09,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:09,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:09,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:09,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:09,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-18 20:19:09,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:09,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-18 20:19:09,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:09,770 INFO L130 PetriNetUnfolder]: 254/1686 cut-off events. [2022-11-18 20:19:09,770 INFO L131 PetriNetUnfolder]: For 123/355 co-relation queries the response was YES. [2022-11-18 20:19:09,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 1686 events. 254/1686 cut-off events. For 123/355 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13579 event pairs, 20 based on Foata normal form. 0/1366 useless extension candidates. Maximal degree in co-relation 1600. Up to 327 conditions per place. [2022-11-18 20:19:09,810 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 32 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-18 20:19:09,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 253 transitions, 616 flow [2022-11-18 20:19:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:19:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1460 transitions. [2022-11-18 20:19:09,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8784596871239471 [2022-11-18 20:19:09,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1460 transitions. [2022-11-18 20:19:09,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1460 transitions. [2022-11-18 20:19:09,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:09,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1460 transitions. [2022-11-18 20:19:09,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,829 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 523 flow. Second operand 6 states and 1460 transitions. [2022-11-18 20:19:09,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 253 transitions, 616 flow [2022-11-18 20:19:09,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 253 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:19:09,860 INFO L231 Difference]: Finished difference. Result has 249 places, 246 transitions, 531 flow [2022-11-18 20:19:09,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=249, PETRI_TRANSITIONS=246} [2022-11-18 20:19:09,862 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 4 predicate places. [2022-11-18 20:19:09,862 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 246 transitions, 531 flow [2022-11-18 20:19:09,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:09,863 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] [2022-11-18 20:19:09,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:19:09,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash 860131294, now seen corresponding path program 1 times [2022-11-18 20:19:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:09,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674008912] [2022-11-18 20:19:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:09,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:09,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674008912] [2022-11-18 20:19:09,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674008912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:09,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:09,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:09,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498734236] [2022-11-18 20:19:09,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:09,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:09,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:09,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:09,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-18 20:19:09,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 246 transitions, 531 flow. Second operand has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:09,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:09,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-18 20:19:09,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:10,428 INFO L130 PetriNetUnfolder]: 138/945 cut-off events. [2022-11-18 20:19:10,429 INFO L131 PetriNetUnfolder]: For 104/378 co-relation queries the response was YES. [2022-11-18 20:19:10,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 945 events. 138/945 cut-off events. For 104/378 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7022 event pairs, 48 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 1060. Up to 126 conditions per place. [2022-11-18 20:19:10,460 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 36 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-18 20:19:10,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 259 transitions, 644 flow [2022-11-18 20:19:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:19:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1002 transitions. [2022-11-18 20:19:10,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9043321299638989 [2022-11-18 20:19:10,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1002 transitions. [2022-11-18 20:19:10,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1002 transitions. [2022-11-18 20:19:10,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:10,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1002 transitions. [2022-11-18 20:19:10,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:10,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:10,478 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:10,479 INFO L175 Difference]: Start difference. First operand has 249 places, 246 transitions, 531 flow. Second operand 4 states and 1002 transitions. [2022-11-18 20:19:10,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 259 transitions, 644 flow [2022-11-18 20:19:10,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 259 transitions, 635 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:19:10,486 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 546 flow [2022-11-18 20:19:10,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2022-11-18 20:19:10,490 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 5 predicate places. [2022-11-18 20:19:10,490 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 546 flow [2022-11-18 20:19:10,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:10,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:10,492 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] [2022-11-18 20:19:10,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:19:10,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1903561217, now seen corresponding path program 1 times [2022-11-18 20:19:10,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:10,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911400347] [2022-11-18 20:19:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:10,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:10,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911400347] [2022-11-18 20:19:10,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911400347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:10,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:10,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:10,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39116203] [2022-11-18 20:19:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:10,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:10,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:10,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-18 20:19:10,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:10,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:10,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-18 20:19:10,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:10,935 INFO L130 PetriNetUnfolder]: 81/918 cut-off events. [2022-11-18 20:19:10,935 INFO L131 PetriNetUnfolder]: For 55/59 co-relation queries the response was YES. [2022-11-18 20:19:10,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 918 events. 81/918 cut-off events. For 55/59 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6394 event pairs, 24 based on Foata normal form. 3/803 useless extension candidates. Maximal degree in co-relation 1062. Up to 72 conditions per place. [2022-11-18 20:19:10,961 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 37 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-18 20:19:10,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 259 transitions, 654 flow [2022-11-18 20:19:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:19:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2022-11-18 20:19:10,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034296028880866 [2022-11-18 20:19:10,965 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2022-11-18 20:19:10,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2022-11-18 20:19:10,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:10,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2022-11-18 20:19:10,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:10,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:10,973 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:10,973 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 546 flow. Second operand 4 states and 1001 transitions. [2022-11-18 20:19:10,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 259 transitions, 654 flow [2022-11-18 20:19:10,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 259 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:10,980 INFO L231 Difference]: Finished difference. Result has 252 places, 246 transitions, 544 flow [2022-11-18 20:19:10,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=252, PETRI_TRANSITIONS=246} [2022-11-18 20:19:10,985 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 7 predicate places. [2022-11-18 20:19:10,986 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 246 transitions, 544 flow [2022-11-18 20:19:10,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:10,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:10,989 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] [2022-11-18 20:19:10,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:19:10,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:10,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1119143714, now seen corresponding path program 1 times [2022-11-18 20:19:10,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:10,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740564202] [2022-11-18 20:19:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:10,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:11,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:11,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740564202] [2022-11-18 20:19:11,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740564202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:11,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:11,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:11,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611139230] [2022-11-18 20:19:11,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:11,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:11,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:11,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:11,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:11,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-18 20:19:11,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 246 transitions, 544 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:11,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:11,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-18 20:19:11,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:11,546 INFO L130 PetriNetUnfolder]: 131/991 cut-off events. [2022-11-18 20:19:11,546 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-18 20:19:11,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 991 events. 131/991 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6887 event pairs, 2 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 1289. Up to 217 conditions per place. [2022-11-18 20:19:11,581 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-18 20:19:11,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 638 flow [2022-11-18 20:19:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:19:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2022-11-18 20:19:11,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778580024067388 [2022-11-18 20:19:11,586 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2022-11-18 20:19:11,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2022-11-18 20:19:11,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:11,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2022-11-18 20:19:11,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 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) [2022-11-18 20:19:11,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:11,595 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:11,595 INFO L175 Difference]: Start difference. First operand has 252 places, 246 transitions, 544 flow. Second operand 6 states and 1459 transitions. [2022-11-18 20:19:11,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 638 flow [2022-11-18 20:19:11,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 253 transitions, 633 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:19:11,603 INFO L231 Difference]: Finished difference. Result has 254 places, 245 transitions, 547 flow [2022-11-18 20:19:11,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=254, PETRI_TRANSITIONS=245} [2022-11-18 20:19:11,606 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 9 predicate places. [2022-11-18 20:19:11,606 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 245 transitions, 547 flow [2022-11-18 20:19:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:11,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:11,607 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] [2022-11-18 20:19:11,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:19:11,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:11,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:11,608 INFO L85 PathProgramCache]: Analyzing trace with hash -879934367, now seen corresponding path program 1 times [2022-11-18 20:19:11,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:11,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808177892] [2022-11-18 20:19:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:11,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:11,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:11,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808177892] [2022-11-18 20:19:11,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808177892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:11,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:11,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:11,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372380278] [2022-11-18 20:19:11,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:11,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:19:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:11,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:19:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:19:11,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 277 [2022-11-18 20:19:11,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 245 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:11,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:11,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 277 [2022-11-18 20:19:11,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:12,185 INFO L130 PetriNetUnfolder]: 95/947 cut-off events. [2022-11-18 20:19:12,185 INFO L131 PetriNetUnfolder]: For 38/42 co-relation queries the response was YES. [2022-11-18 20:19:12,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 947 events. 95/947 cut-off events. For 38/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6793 event pairs, 30 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 1151. Up to 90 conditions per place. [2022-11-18 20:19:12,213 INFO L137 encePairwiseOnDemand]: 270/277 looper letters, 44 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2022-11-18 20:19:12,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 266 transitions, 703 flow [2022-11-18 20:19:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:19:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1468 transitions. [2022-11-18 20:19:12,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8832731648616126 [2022-11-18 20:19:12,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1468 transitions. [2022-11-18 20:19:12,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1468 transitions. [2022-11-18 20:19:12,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:12,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1468 transitions. [2022-11-18 20:19:12,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:12,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:12,228 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:12,228 INFO L175 Difference]: Start difference. First operand has 254 places, 245 transitions, 547 flow. Second operand 6 states and 1468 transitions. [2022-11-18 20:19:12,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 266 transitions, 703 flow [2022-11-18 20:19:12,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 266 transitions, 689 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 20:19:12,235 INFO L231 Difference]: Finished difference. Result has 255 places, 248 transitions, 568 flow [2022-11-18 20:19:12,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=255, PETRI_TRANSITIONS=248} [2022-11-18 20:19:12,236 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 10 predicate places. [2022-11-18 20:19:12,236 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 248 transitions, 568 flow [2022-11-18 20:19:12,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:12,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:12,237 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] [2022-11-18 20:19:12,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:19:12,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:12,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1844755451, now seen corresponding path program 1 times [2022-11-18 20:19:12,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:12,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126584623] [2022-11-18 20:19:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:12,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:12,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:12,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126584623] [2022-11-18 20:19:12,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126584623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:12,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:12,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:12,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555728480] [2022-11-18 20:19:12,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:12,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:12,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:12,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:12,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-18 20:19:12,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 248 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:12,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:12,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-18 20:19:12,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:12,915 INFO L130 PetriNetUnfolder]: 375/1876 cut-off events. [2022-11-18 20:19:12,915 INFO L131 PetriNetUnfolder]: For 292/298 co-relation queries the response was YES. [2022-11-18 20:19:12,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1876 events. 375/1876 cut-off events. For 292/298 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15568 event pairs, 4 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 2466. Up to 574 conditions per place. [2022-11-18 20:19:12,953 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-18 20:19:12,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 253 transitions, 654 flow [2022-11-18 20:19:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:19:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2022-11-18 20:19:12,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778580024067388 [2022-11-18 20:19:12,958 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2022-11-18 20:19:12,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2022-11-18 20:19:12,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:12,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2022-11-18 20:19:12,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 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) [2022-11-18 20:19:12,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:12,968 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:12,968 INFO L175 Difference]: Start difference. First operand has 255 places, 248 transitions, 568 flow. Second operand 6 states and 1459 transitions. [2022-11-18 20:19:12,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 253 transitions, 654 flow [2022-11-18 20:19:12,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 253 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:12,974 INFO L231 Difference]: Finished difference. Result has 258 places, 247 transitions, 573 flow [2022-11-18 20:19:12,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=258, PETRI_TRANSITIONS=247} [2022-11-18 20:19:12,976 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 13 predicate places. [2022-11-18 20:19:12,976 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 247 transitions, 573 flow [2022-11-18 20:19:12,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:12,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:12,977 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] [2022-11-18 20:19:12,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:19:12,977 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1352843323, now seen corresponding path program 1 times [2022-11-18 20:19:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:12,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761045769] [2022-11-18 20:19:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:12,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:13,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:13,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761045769] [2022-11-18 20:19:13,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761045769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:13,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:13,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:13,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190307976] [2022-11-18 20:19:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:13,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:13,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:13,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:13,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-18 20:19:13,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 247 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:13,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:13,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-18 20:19:13,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:13,619 INFO L130 PetriNetUnfolder]: 368/1772 cut-off events. [2022-11-18 20:19:13,619 INFO L131 PetriNetUnfolder]: For 369/629 co-relation queries the response was YES. [2022-11-18 20:19:13,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1772 events. 368/1772 cut-off events. For 369/629 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17019 event pairs, 144 based on Foata normal form. 0/1356 useless extension candidates. Maximal degree in co-relation 2500. Up to 338 conditions per place. [2022-11-18 20:19:13,692 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 35 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-18 20:19:13,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 259 transitions, 679 flow [2022-11-18 20:19:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:19:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2022-11-18 20:19:13,696 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034296028880866 [2022-11-18 20:19:13,696 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2022-11-18 20:19:13,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2022-11-18 20:19:13,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:13,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2022-11-18 20:19:13,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:13,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:13,702 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:13,703 INFO L175 Difference]: Start difference. First operand has 258 places, 247 transitions, 573 flow. Second operand 4 states and 1001 transitions. [2022-11-18 20:19:13,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 259 transitions, 679 flow [2022-11-18 20:19:13,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 259 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:19:13,709 INFO L231 Difference]: Finished difference. Result has 259 places, 248 transitions, 588 flow [2022-11-18 20:19:13,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=259, PETRI_TRANSITIONS=248} [2022-11-18 20:19:13,710 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 14 predicate places. [2022-11-18 20:19:13,710 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 248 transitions, 588 flow [2022-11-18 20:19:13,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:13,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:13,723 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] [2022-11-18 20:19:13,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:19:13,723 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:13,724 INFO L85 PathProgramCache]: Analyzing trace with hash 599333189, now seen corresponding path program 1 times [2022-11-18 20:19:13,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:13,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860006771] [2022-11-18 20:19:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:13,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:13,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:13,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860006771] [2022-11-18 20:19:13,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860006771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:13,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:13,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:13,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126958875] [2022-11-18 20:19:13,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:13,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:13,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-18 20:19:13,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 248 transitions, 588 flow. Second operand has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:13,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:13,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-18 20:19:13,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:14,296 INFO L130 PetriNetUnfolder]: 129/1067 cut-off events. [2022-11-18 20:19:14,297 INFO L131 PetriNetUnfolder]: For 168/442 co-relation queries the response was YES. [2022-11-18 20:19:14,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 1067 events. 129/1067 cut-off events. For 168/442 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8271 event pairs, 48 based on Foata normal form. 5/912 useless extension candidates. Maximal degree in co-relation 1351. Up to 121 conditions per place. [2022-11-18 20:19:14,332 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 36 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-18 20:19:14,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 259 transitions, 691 flow [2022-11-18 20:19:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:14,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:19:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1000 transitions. [2022-11-18 20:19:14,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9025270758122743 [2022-11-18 20:19:14,336 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1000 transitions. [2022-11-18 20:19:14,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1000 transitions. [2022-11-18 20:19:14,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:14,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1000 transitions. [2022-11-18 20:19:14,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:14,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:14,342 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:14,343 INFO L175 Difference]: Start difference. First operand has 259 places, 248 transitions, 588 flow. Second operand 4 states and 1000 transitions. [2022-11-18 20:19:14,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 259 transitions, 691 flow [2022-11-18 20:19:14,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 259 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:14,349 INFO L231 Difference]: Finished difference. Result has 261 places, 247 transitions, 586 flow [2022-11-18 20:19:14,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=261, PETRI_TRANSITIONS=247} [2022-11-18 20:19:14,350 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 16 predicate places. [2022-11-18 20:19:14,350 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 247 transitions, 586 flow [2022-11-18 20:19:14,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:14,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:14,351 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] [2022-11-18 20:19:14,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:19:14,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:14,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:14,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1588430077, now seen corresponding path program 1 times [2022-11-18 20:19:14,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:14,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717145792] [2022-11-18 20:19:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:14,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:14,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:14,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717145792] [2022-11-18 20:19:14,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717145792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:14,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:14,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:19:14,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049247649] [2022-11-18 20:19:14,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:14,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:19:14,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:14,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:19:14,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:19:14,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-18 20:19:14,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 247 transitions, 586 flow. Second operand has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:14,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:14,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-18 20:19:14,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:15,016 INFO L130 PetriNetUnfolder]: 123/1153 cut-off events. [2022-11-18 20:19:15,016 INFO L131 PetriNetUnfolder]: For 93/282 co-relation queries the response was YES. [2022-11-18 20:19:15,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 1153 events. 123/1153 cut-off events. For 93/282 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7813 event pairs, 4 based on Foata normal form. 8/1047 useless extension candidates. Maximal degree in co-relation 1500. Up to 126 conditions per place. [2022-11-18 20:19:15,046 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 41 selfloop transitions, 11 changer transitions 0/263 dead transitions. [2022-11-18 20:19:15,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 263 transitions, 736 flow [2022-11-18 20:19:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:19:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:19:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1906 transitions. [2022-11-18 20:19:15,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601083032490975 [2022-11-18 20:19:15,052 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1906 transitions. [2022-11-18 20:19:15,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1906 transitions. [2022-11-18 20:19:15,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:15,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1906 transitions. [2022-11-18 20:19:15,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.25) internal successors, (1906), 8 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:15,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:15,065 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:15,065 INFO L175 Difference]: Start difference. First operand has 261 places, 247 transitions, 586 flow. Second operand 8 states and 1906 transitions. [2022-11-18 20:19:15,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 263 transitions, 736 flow [2022-11-18 20:19:15,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 263 transitions, 731 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:19:15,073 INFO L231 Difference]: Finished difference. Result has 268 places, 248 transitions, 617 flow [2022-11-18 20:19:15,074 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=617, PETRI_PLACES=268, PETRI_TRANSITIONS=248} [2022-11-18 20:19:15,074 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-18 20:19:15,075 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 248 transitions, 617 flow [2022-11-18 20:19:15,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:15,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:15,076 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] [2022-11-18 20:19:15,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:19:15,076 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:15,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1399460440, now seen corresponding path program 1 times [2022-11-18 20:19:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:15,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189822991] [2022-11-18 20:19:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:15,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:15,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:15,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189822991] [2022-11-18 20:19:15,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189822991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:15,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:15,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:15,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618097353] [2022-11-18 20:19:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:15,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:15,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:15,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-18 20:19:15,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 248 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:15,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:15,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-18 20:19:15,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:15,924 INFO L130 PetriNetUnfolder]: 299/2594 cut-off events. [2022-11-18 20:19:15,924 INFO L131 PetriNetUnfolder]: For 242/508 co-relation queries the response was YES. [2022-11-18 20:19:15,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 2594 events. 299/2594 cut-off events. For 242/508 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 24148 event pairs, 20 based on Foata normal form. 0/2234 useless extension candidates. Maximal degree in co-relation 2665. Up to 427 conditions per place. [2022-11-18 20:19:15,985 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 30 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-18 20:19:15,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 254 transitions, 706 flow [2022-11-18 20:19:15,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:19:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1458 transitions. [2022-11-18 20:19:15,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8772563176895307 [2022-11-18 20:19:15,991 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1458 transitions. [2022-11-18 20:19:15,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1458 transitions. [2022-11-18 20:19:15,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:15,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1458 transitions. [2022-11-18 20:19:15,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:15,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:16,000 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:16,000 INFO L175 Difference]: Start difference. First operand has 268 places, 248 transitions, 617 flow. Second operand 6 states and 1458 transitions. [2022-11-18 20:19:16,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 254 transitions, 706 flow [2022-11-18 20:19:16,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 254 transitions, 697 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:19:16,007 INFO L231 Difference]: Finished difference. Result has 268 places, 247 transitions, 616 flow [2022-11-18 20:19:16,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=616, PETRI_PLACES=268, PETRI_TRANSITIONS=247} [2022-11-18 20:19:16,009 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-18 20:19:16,009 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 247 transitions, 616 flow [2022-11-18 20:19:16,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:16,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:16,010 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] [2022-11-18 20:19:16,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:19:16,010 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:16,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:16,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1996691416, now seen corresponding path program 1 times [2022-11-18 20:19:16,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:16,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047944973] [2022-11-18 20:19:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:16,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:16,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:16,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047944973] [2022-11-18 20:19:16,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047944973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:16,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:16,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:19:16,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554566630] [2022-11-18 20:19:16,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:16,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:19:16,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:16,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:19:16,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:19:16,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-18 20:19:16,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 247 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:16,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:16,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-18 20:19:16,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:16,665 INFO L130 PetriNetUnfolder]: 111/1136 cut-off events. [2022-11-18 20:19:16,665 INFO L131 PetriNetUnfolder]: For 120/285 co-relation queries the response was YES. [2022-11-18 20:19:16,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 1136 events. 111/1136 cut-off events. For 120/285 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7568 event pairs, 4 based on Foata normal form. 8/1039 useless extension candidates. Maximal degree in co-relation 1500. Up to 119 conditions per place. [2022-11-18 20:19:16,699 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 43 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2022-11-18 20:19:16,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 264 transitions, 770 flow [2022-11-18 20:19:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:19:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:19:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1908 transitions. [2022-11-18 20:19:16,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8610108303249098 [2022-11-18 20:19:16,705 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1908 transitions. [2022-11-18 20:19:16,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1908 transitions. [2022-11-18 20:19:16,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:16,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1908 transitions. [2022-11-18 20:19:16,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.5) internal successors, (1908), 8 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:16,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:16,716 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:16,717 INFO L175 Difference]: Start difference. First operand has 268 places, 247 transitions, 616 flow. Second operand 8 states and 1908 transitions. [2022-11-18 20:19:16,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 264 transitions, 770 flow [2022-11-18 20:19:16,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 264 transitions, 761 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:19:16,725 INFO L231 Difference]: Finished difference. Result has 273 places, 248 transitions, 637 flow [2022-11-18 20:19:16,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=273, PETRI_TRANSITIONS=248} [2022-11-18 20:19:16,727 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 28 predicate places. [2022-11-18 20:19:16,727 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 248 transitions, 637 flow [2022-11-18 20:19:16,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:16,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:16,728 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] [2022-11-18 20:19:16,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:19:16,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:16,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:16,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1432071963, now seen corresponding path program 1 times [2022-11-18 20:19:16,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:16,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967021414] [2022-11-18 20:19:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:16,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:16,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:16,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967021414] [2022-11-18 20:19:16,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967021414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:16,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:16,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:16,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333610168] [2022-11-18 20:19:16,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:16,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:19:16,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:19:16,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:19:16,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 277 [2022-11-18 20:19:16,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 248 transitions, 637 flow. Second operand has 5 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:16,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:16,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 277 [2022-11-18 20:19:16,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:17,322 INFO L130 PetriNetUnfolder]: 157/1119 cut-off events. [2022-11-18 20:19:17,323 INFO L131 PetriNetUnfolder]: For 172/514 co-relation queries the response was YES. [2022-11-18 20:19:17,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 1119 events. 157/1119 cut-off events. For 172/514 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9097 event pairs, 60 based on Foata normal form. 0/958 useless extension candidates. Maximal degree in co-relation 1506. Up to 153 conditions per place. [2022-11-18 20:19:17,361 INFO L137 encePairwiseOnDemand]: 270/277 looper letters, 43 selfloop transitions, 7 changer transitions 0/268 dead transitions. [2022-11-18 20:19:17,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 268 transitions, 788 flow [2022-11-18 20:19:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:19:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1467 transitions. [2022-11-18 20:19:17,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8826714801444043 [2022-11-18 20:19:17,366 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1467 transitions. [2022-11-18 20:19:17,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1467 transitions. [2022-11-18 20:19:17,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:17,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1467 transitions. [2022-11-18 20:19:17,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:17,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:17,375 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:17,375 INFO L175 Difference]: Start difference. First operand has 273 places, 248 transitions, 637 flow. Second operand 6 states and 1467 transitions. [2022-11-18 20:19:17,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 268 transitions, 788 flow [2022-11-18 20:19:17,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 268 transitions, 774 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 20:19:17,381 INFO L231 Difference]: Finished difference. Result has 274 places, 251 transitions, 658 flow [2022-11-18 20:19:17,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=274, PETRI_TRANSITIONS=251} [2022-11-18 20:19:17,383 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 29 predicate places. [2022-11-18 20:19:17,383 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 251 transitions, 658 flow [2022-11-18 20:19:17,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:17,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:17,384 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] [2022-11-18 20:19:17,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:19:17,385 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:17,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash 802900876, now seen corresponding path program 1 times [2022-11-18 20:19:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:17,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961455124] [2022-11-18 20:19:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:17,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:17,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:17,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961455124] [2022-11-18 20:19:17,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961455124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:17,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:17,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:17,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028559299] [2022-11-18 20:19:17,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:17,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:17,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:17,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:17,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:17,542 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-18 20:19:17,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 251 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:17,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:17,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-18 20:19:17,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:17,950 INFO L130 PetriNetUnfolder]: 114/894 cut-off events. [2022-11-18 20:19:17,950 INFO L131 PetriNetUnfolder]: For 132/136 co-relation queries the response was YES. [2022-11-18 20:19:17,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 894 events. 114/894 cut-off events. For 132/136 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6353 event pairs, 58 based on Foata normal form. 3/824 useless extension candidates. Maximal degree in co-relation 1413. Up to 153 conditions per place. [2022-11-18 20:19:17,981 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 49 selfloop transitions, 7 changer transitions 0/267 dead transitions. [2022-11-18 20:19:17,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 267 transitions, 817 flow [2022-11-18 20:19:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:19:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1663 transitions. [2022-11-18 20:19:17,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8576585869004641 [2022-11-18 20:19:17,986 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1663 transitions. [2022-11-18 20:19:17,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1663 transitions. [2022-11-18 20:19:17,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:17,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1663 transitions. [2022-11-18 20:19:17,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:17,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:17,997 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:17,998 INFO L175 Difference]: Start difference. First operand has 274 places, 251 transitions, 658 flow. Second operand 7 states and 1663 transitions. [2022-11-18 20:19:17,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 267 transitions, 817 flow [2022-11-18 20:19:18,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 267 transitions, 811 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:19:18,005 INFO L231 Difference]: Finished difference. Result has 281 places, 254 transitions, 688 flow [2022-11-18 20:19:18,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=281, PETRI_TRANSITIONS=254} [2022-11-18 20:19:18,006 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 36 predicate places. [2022-11-18 20:19:18,007 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 254 transitions, 688 flow [2022-11-18 20:19:18,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:18,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:18,008 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] [2022-11-18 20:19:18,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:19:18,008 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:18,009 INFO L85 PathProgramCache]: Analyzing trace with hash -152845688, now seen corresponding path program 1 times [2022-11-18 20:19:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:18,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302837616] [2022-11-18 20:19:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:18,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:18,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:18,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302837616] [2022-11-18 20:19:18,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302837616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:18,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:18,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232621225] [2022-11-18 20:19:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:18,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:18,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:18,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:18,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:18,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-18 20:19:18,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 254 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:18,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:18,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-18 20:19:18,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:18,635 INFO L130 PetriNetUnfolder]: 108/885 cut-off events. [2022-11-18 20:19:18,636 INFO L131 PetriNetUnfolder]: For 146/150 co-relation queries the response was YES. [2022-11-18 20:19:18,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 885 events. 108/885 cut-off events. For 146/150 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6249 event pairs, 46 based on Foata normal form. 3/829 useless extension candidates. Maximal degree in co-relation 1456. Up to 126 conditions per place. [2022-11-18 20:19:18,670 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 55 selfloop transitions, 8 changer transitions 0/276 dead transitions. [2022-11-18 20:19:18,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 276 transitions, 890 flow [2022-11-18 20:19:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:19:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1669 transitions. [2022-11-18 20:19:18,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8607529654461062 [2022-11-18 20:19:18,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1669 transitions. [2022-11-18 20:19:18,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1669 transitions. [2022-11-18 20:19:18,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:18,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1669 transitions. [2022-11-18 20:19:18,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.42857142857142) internal successors, (1669), 7 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:18,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:18,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:18,690 INFO L175 Difference]: Start difference. First operand has 281 places, 254 transitions, 688 flow. Second operand 7 states and 1669 transitions. [2022-11-18 20:19:18,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 276 transitions, 890 flow [2022-11-18 20:19:18,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 276 transitions, 888 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:18,700 INFO L231 Difference]: Finished difference. Result has 289 places, 258 transitions, 735 flow [2022-11-18 20:19:18,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=735, PETRI_PLACES=289, PETRI_TRANSITIONS=258} [2022-11-18 20:19:18,701 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 44 predicate places. [2022-11-18 20:19:18,704 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 258 transitions, 735 flow [2022-11-18 20:19:18,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:18,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:18,705 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] [2022-11-18 20:19:18,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:19:18,706 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:18,707 INFO L85 PathProgramCache]: Analyzing trace with hash -15634132, now seen corresponding path program 1 times [2022-11-18 20:19:18,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:18,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531212578] [2022-11-18 20:19:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:18,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:18,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531212578] [2022-11-18 20:19:18,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531212578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:18,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:18,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066940375] [2022-11-18 20:19:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:18,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:18,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:18,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:18,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-18 20:19:18,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 258 transitions, 735 flow. Second operand has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:18,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:18,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-18 20:19:18,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:19,446 INFO L130 PetriNetUnfolder]: 354/1760 cut-off events. [2022-11-18 20:19:19,446 INFO L131 PetriNetUnfolder]: For 526/784 co-relation queries the response was YES. [2022-11-18 20:19:19,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2757 conditions, 1760 events. 354/1760 cut-off events. For 526/784 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17135 event pairs, 144 based on Foata normal form. 13/1394 useless extension candidates. Maximal degree in co-relation 2669. Up to 316 conditions per place. [2022-11-18 20:19:19,486 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 35 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-18 20:19:19,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 268 transitions, 831 flow [2022-11-18 20:19:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:19:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2022-11-18 20:19:19,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9016245487364621 [2022-11-18 20:19:19,490 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2022-11-18 20:19:19,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2022-11-18 20:19:19,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:19,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2022-11-18 20:19:19,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:19,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:19,497 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:19,497 INFO L175 Difference]: Start difference. First operand has 289 places, 258 transitions, 735 flow. Second operand 4 states and 999 transitions. [2022-11-18 20:19:19,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 268 transitions, 831 flow [2022-11-18 20:19:19,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 268 transitions, 829 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:19,506 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 733 flow [2022-11-18 20:19:19,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=733, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2022-11-18 20:19:19,509 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 46 predicate places. [2022-11-18 20:19:19,509 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 733 flow [2022-11-18 20:19:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:19,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:19,510 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] [2022-11-18 20:19:19,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:19:19,510 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:19,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:19,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1949702205, now seen corresponding path program 1 times [2022-11-18 20:19:19,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:19,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633637838] [2022-11-18 20:19:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:19,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:19,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633637838] [2022-11-18 20:19:19,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633637838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:19,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:19,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:19:19,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596757134] [2022-11-18 20:19:19,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:19,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:19:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:19:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:19:19,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-18 20:19:19,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 733 flow. Second operand has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:19,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:19,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-18 20:19:19,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:20,406 INFO L130 PetriNetUnfolder]: 241/1764 cut-off events. [2022-11-18 20:19:20,407 INFO L131 PetriNetUnfolder]: For 311/496 co-relation queries the response was YES. [2022-11-18 20:19:20,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 1764 events. 241/1764 cut-off events. For 311/496 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15461 event pairs, 7 based on Foata normal form. 2/1588 useless extension candidates. Maximal degree in co-relation 2595. Up to 209 conditions per place. [2022-11-18 20:19:20,483 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 40 selfloop transitions, 11 changer transitions 0/272 dead transitions. [2022-11-18 20:19:20,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 272 transitions, 878 flow [2022-11-18 20:19:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:19:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:19:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1905 transitions. [2022-11-18 20:19:20,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8596570397111913 [2022-11-18 20:19:20,489 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1905 transitions. [2022-11-18 20:19:20,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1905 transitions. [2022-11-18 20:19:20,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:20,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1905 transitions. [2022-11-18 20:19:20,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.125) internal successors, (1905), 8 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:20,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:20,501 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:20,501 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 733 flow. Second operand 8 states and 1905 transitions. [2022-11-18 20:19:20,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 272 transitions, 878 flow [2022-11-18 20:19:20,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 272 transitions, 873 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:19:20,511 INFO L231 Difference]: Finished difference. Result has 298 places, 258 transitions, 764 flow [2022-11-18 20:19:20,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=298, PETRI_TRANSITIONS=258} [2022-11-18 20:19:20,513 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-18 20:19:20,513 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 258 transitions, 764 flow [2022-11-18 20:19:20,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:20,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:20,514 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] [2022-11-18 20:19:20,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:19:20,515 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash -484657265, now seen corresponding path program 1 times [2022-11-18 20:19:20,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:20,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110920122] [2022-11-18 20:19:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:20,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:20,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:20,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110920122] [2022-11-18 20:19:20,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110920122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:20,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:20,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619435319] [2022-11-18 20:19:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:20,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:20,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:20,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:20,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-18 20:19:20,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 258 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:20,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:20,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-18 20:19:20,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:21,461 INFO L130 PetriNetUnfolder]: 448/2549 cut-off events. [2022-11-18 20:19:21,461 INFO L131 PetriNetUnfolder]: For 594/600 co-relation queries the response was YES. [2022-11-18 20:19:21,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 2549 events. 448/2549 cut-off events. For 594/600 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23427 event pairs, 4 based on Foata normal form. 0/2131 useless extension candidates. Maximal degree in co-relation 3719. Up to 737 conditions per place. [2022-11-18 20:19:21,526 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 29 selfloop transitions, 5 changer transitions 0/263 dead transitions. [2022-11-18 20:19:21,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 263 transitions, 850 flow [2022-11-18 20:19:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:19:21,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1457 transitions. [2022-11-18 20:19:21,529 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766546329723225 [2022-11-18 20:19:21,529 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1457 transitions. [2022-11-18 20:19:21,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1457 transitions. [2022-11-18 20:19:21,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:21,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1457 transitions. [2022-11-18 20:19:21,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.83333333333334) internal successors, (1457), 6 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:21,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:21,538 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:21,538 INFO L175 Difference]: Start difference. First operand has 298 places, 258 transitions, 764 flow. Second operand 6 states and 1457 transitions. [2022-11-18 20:19:21,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 263 transitions, 850 flow [2022-11-18 20:19:21,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 263 transitions, 837 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:19:21,547 INFO L231 Difference]: Finished difference. Result has 298 places, 257 transitions, 763 flow [2022-11-18 20:19:21,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=298, PETRI_TRANSITIONS=257} [2022-11-18 20:19:21,549 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-18 20:19:21,549 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 257 transitions, 763 flow [2022-11-18 20:19:21,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:21,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:21,550 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] [2022-11-18 20:19:21,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:19:21,551 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:21,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash 311226988, now seen corresponding path program 1 times [2022-11-18 20:19:21,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:21,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889744373] [2022-11-18 20:19:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:21,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:21,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:21,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889744373] [2022-11-18 20:19:21,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889744373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:21,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:21,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:19:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846531773] [2022-11-18 20:19:21,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:21,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:19:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:19:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:19:21,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-18 20:19:21,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 257 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:21,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:21,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-18 20:19:21,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:22,370 INFO L130 PetriNetUnfolder]: 205/1309 cut-off events. [2022-11-18 20:19:22,370 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2022-11-18 20:19:22,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1309 events. 205/1309 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10159 event pairs, 2 based on Foata normal form. 0/1203 useless extension candidates. Maximal degree in co-relation 2316. Up to 195 conditions per place. [2022-11-18 20:19:22,422 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 42 selfloop transitions, 9 changer transitions 0/273 dead transitions. [2022-11-18 20:19:22,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 273 transitions, 912 flow [2022-11-18 20:19:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:19:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:19:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1907 transitions. [2022-11-18 20:19:22,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8605595667870036 [2022-11-18 20:19:22,427 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1907 transitions. [2022-11-18 20:19:22,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1907 transitions. [2022-11-18 20:19:22,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:22,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1907 transitions. [2022-11-18 20:19:22,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.375) internal successors, (1907), 8 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:22,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:22,438 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:22,439 INFO L175 Difference]: Start difference. First operand has 298 places, 257 transitions, 763 flow. Second operand 8 states and 1907 transitions. [2022-11-18 20:19:22,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 273 transitions, 912 flow [2022-11-18 20:19:22,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 273 transitions, 903 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:19:22,449 INFO L231 Difference]: Finished difference. Result has 303 places, 258 transitions, 784 flow [2022-11-18 20:19:22,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=303, PETRI_TRANSITIONS=258} [2022-11-18 20:19:22,451 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 58 predicate places. [2022-11-18 20:19:22,451 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 258 transitions, 784 flow [2022-11-18 20:19:22,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:22,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:22,452 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] [2022-11-18 20:19:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:19:22,453 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1023808942, now seen corresponding path program 1 times [2022-11-18 20:19:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:22,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55847160] [2022-11-18 20:19:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:22,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:22,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:22,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55847160] [2022-11-18 20:19:22,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55847160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:22,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:22,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:22,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889879857] [2022-11-18 20:19:22,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:22,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:22,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:22,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:22,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:22,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-18 20:19:22,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 258 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:22,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:22,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-18 20:19:22,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:23,267 INFO L130 PetriNetUnfolder]: 437/2141 cut-off events. [2022-11-18 20:19:23,267 INFO L131 PetriNetUnfolder]: For 518/822 co-relation queries the response was YES. [2022-11-18 20:19:23,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 2141 events. 437/2141 cut-off events. For 518/822 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21971 event pairs, 216 based on Foata normal form. 13/1689 useless extension candidates. Maximal degree in co-relation 3260. Up to 466 conditions per place. [2022-11-18 20:19:23,314 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 32 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-18 20:19:23,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 268 transitions, 876 flow [2022-11-18 20:19:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:19:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 996 transitions. [2022-11-18 20:19:23,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8989169675090253 [2022-11-18 20:19:23,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 996 transitions. [2022-11-18 20:19:23,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 996 transitions. [2022-11-18 20:19:23,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:23,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 996 transitions. [2022-11-18 20:19:23,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:23,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:23,327 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:23,330 INFO L175 Difference]: Start difference. First operand has 303 places, 258 transitions, 784 flow. Second operand 4 states and 996 transitions. [2022-11-18 20:19:23,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 268 transitions, 876 flow [2022-11-18 20:19:23,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 268 transitions, 865 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:19:23,338 INFO L231 Difference]: Finished difference. Result has 301 places, 258 transitions, 782 flow [2022-11-18 20:19:23,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=301, PETRI_TRANSITIONS=258} [2022-11-18 20:19:23,339 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 56 predicate places. [2022-11-18 20:19:23,340 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 258 transitions, 782 flow [2022-11-18 20:19:23,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:23,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:23,341 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] [2022-11-18 20:19:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:19:23,341 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1785602928, now seen corresponding path program 1 times [2022-11-18 20:19:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:23,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139879068] [2022-11-18 20:19:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:23,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:23,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139879068] [2022-11-18 20:19:23,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139879068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:23,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:23,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:23,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645026479] [2022-11-18 20:19:23,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:23,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:23,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:23,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-18 20:19:23,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 258 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:23,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:23,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-18 20:19:23,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:24,166 INFO L130 PetriNetUnfolder]: 210/1103 cut-off events. [2022-11-18 20:19:24,166 INFO L131 PetriNetUnfolder]: For 369/668 co-relation queries the response was YES. [2022-11-18 20:19:24,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1103 events. 210/1103 cut-off events. For 369/668 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9284 event pairs, 116 based on Foata normal form. 5/960 useless extension candidates. Maximal degree in co-relation 1870. Up to 271 conditions per place. [2022-11-18 20:19:24,209 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 48 selfloop transitions, 7 changer transitions 0/273 dead transitions. [2022-11-18 20:19:24,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 273 transitions, 936 flow [2022-11-18 20:19:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:19:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1662 transitions. [2022-11-18 20:19:24,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-18 20:19:24,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1662 transitions. [2022-11-18 20:19:24,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1662 transitions. [2022-11-18 20:19:24,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:24,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1662 transitions. [2022-11-18 20:19:24,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.42857142857142) internal successors, (1662), 7 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:24,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:24,232 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:24,232 INFO L175 Difference]: Start difference. First operand has 301 places, 258 transitions, 782 flow. Second operand 7 states and 1662 transitions. [2022-11-18 20:19:24,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 273 transitions, 936 flow [2022-11-18 20:19:24,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 273 transitions, 931 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:19:24,241 INFO L231 Difference]: Finished difference. Result has 308 places, 261 transitions, 813 flow [2022-11-18 20:19:24,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=813, PETRI_PLACES=308, PETRI_TRANSITIONS=261} [2022-11-18 20:19:24,243 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 63 predicate places. [2022-11-18 20:19:24,243 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 261 transitions, 813 flow [2022-11-18 20:19:24,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:24,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:24,244 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] [2022-11-18 20:19:24,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:19:24,245 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1207915074, now seen corresponding path program 1 times [2022-11-18 20:19:24,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:24,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722833923] [2022-11-18 20:19:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:24,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:24,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:24,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722833923] [2022-11-18 20:19:24,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722833923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:24,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:24,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:24,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674477632] [2022-11-18 20:19:24,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:24,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:24,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:24,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:24,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:24,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-18 20:19:24,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 261 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:24,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:24,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-18 20:19:24,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:25,143 INFO L130 PetriNetUnfolder]: 198/1086 cut-off events. [2022-11-18 20:19:25,144 INFO L131 PetriNetUnfolder]: For 386/671 co-relation queries the response was YES. [2022-11-18 20:19:25,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 1086 events. 198/1086 cut-off events. For 386/671 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9073 event pairs, 92 based on Foata normal form. 5/974 useless extension candidates. Maximal degree in co-relation 1948. Up to 222 conditions per place. [2022-11-18 20:19:25,210 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 54 selfloop transitions, 8 changer transitions 0/282 dead transitions. [2022-11-18 20:19:25,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 282 transitions, 1010 flow [2022-11-18 20:19:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:19:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1668 transitions. [2022-11-18 20:19:25,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8602372356884992 [2022-11-18 20:19:25,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1668 transitions. [2022-11-18 20:19:25,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1668 transitions. [2022-11-18 20:19:25,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:25,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1668 transitions. [2022-11-18 20:19:25,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.28571428571428) internal successors, (1668), 7 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:25,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:25,226 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:25,226 INFO L175 Difference]: Start difference. First operand has 308 places, 261 transitions, 813 flow. Second operand 7 states and 1668 transitions. [2022-11-18 20:19:25,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 282 transitions, 1010 flow [2022-11-18 20:19:25,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 282 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:25,237 INFO L231 Difference]: Finished difference. Result has 316 places, 265 transitions, 860 flow [2022-11-18 20:19:25,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=316, PETRI_TRANSITIONS=265} [2022-11-18 20:19:25,239 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 71 predicate places. [2022-11-18 20:19:25,239 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 265 transitions, 860 flow [2022-11-18 20:19:25,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:25,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:25,241 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] [2022-11-18 20:19:25,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:19:25,241 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash 627244916, now seen corresponding path program 1 times [2022-11-18 20:19:25,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:25,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917926474] [2022-11-18 20:19:25,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:25,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:25,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:25,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917926474] [2022-11-18 20:19:25,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917926474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:25,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:25,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:19:25,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691975557] [2022-11-18 20:19:25,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:25,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:19:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:25,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:19:25,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:19:25,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-18 20:19:25,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 265 transitions, 860 flow. Second operand has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:25,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:25,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-18 20:19:25,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:26,605 INFO L130 PetriNetUnfolder]: 477/2445 cut-off events. [2022-11-18 20:19:26,605 INFO L131 PetriNetUnfolder]: For 654/800 co-relation queries the response was YES. [2022-11-18 20:19:26,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 2445 events. 477/2445 cut-off events. For 654/800 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24467 event pairs, 2 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 3626. Up to 486 conditions per place. [2022-11-18 20:19:26,690 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 38 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-11-18 20:19:26,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 279 transitions, 990 flow [2022-11-18 20:19:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:19:26,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:19:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1904 transitions. [2022-11-18 20:19:26,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592057761732852 [2022-11-18 20:19:26,696 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1904 transitions. [2022-11-18 20:19:26,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1904 transitions. [2022-11-18 20:19:26,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:26,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1904 transitions. [2022-11-18 20:19:26,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:26,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:26,708 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:26,708 INFO L175 Difference]: Start difference. First operand has 316 places, 265 transitions, 860 flow. Second operand 8 states and 1904 transitions. [2022-11-18 20:19:26,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 279 transitions, 990 flow [2022-11-18 20:19:26,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 279 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:19:26,719 INFO L231 Difference]: Finished difference. Result has 325 places, 266 transitions, 890 flow [2022-11-18 20:19:26,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=890, PETRI_PLACES=325, PETRI_TRANSITIONS=266} [2022-11-18 20:19:26,721 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 80 predicate places. [2022-11-18 20:19:26,721 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 266 transitions, 890 flow [2022-11-18 20:19:26,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:26,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:26,722 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] [2022-11-18 20:19:26,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:19:26,723 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:26,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2030243245, now seen corresponding path program 1 times [2022-11-18 20:19:26,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:26,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537798988] [2022-11-18 20:19:26,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:26,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:26,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537798988] [2022-11-18 20:19:26,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537798988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:26,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:26,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:19:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582442953] [2022-11-18 20:19:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:26,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:19:26,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:26,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:19:26,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:19:26,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-18 20:19:26,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 266 transitions, 890 flow. Second operand has 8 states, 8 states have (on average 234.375) internal successors, (1875), 8 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:26,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:26,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-18 20:19:26,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:27,734 INFO L130 PetriNetUnfolder]: 399/2339 cut-off events. [2022-11-18 20:19:27,734 INFO L131 PetriNetUnfolder]: For 710/833 co-relation queries the response was YES. [2022-11-18 20:19:27,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 2339 events. 399/2339 cut-off events. For 710/833 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 23219 event pairs, 2 based on Foata normal form. 0/2019 useless extension candidates. Maximal degree in co-relation 3554. Up to 432 conditions per place. [2022-11-18 20:19:27,794 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 41 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-11-18 20:19:27,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 282 transitions, 1037 flow [2022-11-18 20:19:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:19:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:19:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1906 transitions. [2022-11-18 20:19:27,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601083032490975 [2022-11-18 20:19:27,802 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1906 transitions. [2022-11-18 20:19:27,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1906 transitions. [2022-11-18 20:19:27,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:27,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1906 transitions. [2022-11-18 20:19:27,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.25) internal successors, (1906), 8 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:27,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:27,814 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:27,815 INFO L175 Difference]: Start difference. First operand has 325 places, 266 transitions, 890 flow. Second operand 8 states and 1906 transitions. [2022-11-18 20:19:27,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 282 transitions, 1037 flow [2022-11-18 20:19:27,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 282 transitions, 1028 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:19:27,827 INFO L231 Difference]: Finished difference. Result has 330 places, 267 transitions, 911 flow [2022-11-18 20:19:27,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=330, PETRI_TRANSITIONS=267} [2022-11-18 20:19:27,829 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 85 predicate places. [2022-11-18 20:19:27,829 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 267 transitions, 911 flow [2022-11-18 20:19:27,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.375) internal successors, (1875), 8 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:27,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:27,831 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:27,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:19:27,831 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:27,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1375631753, now seen corresponding path program 1 times [2022-11-18 20:19:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:27,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033621036] [2022-11-18 20:19:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:27,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:28,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033621036] [2022-11-18 20:19:28,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033621036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:28,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:28,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:28,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038560660] [2022-11-18 20:19:28,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:28,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:28,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:28,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-18 20:19:28,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 267 transitions, 911 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:28,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:28,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-18 20:19:28,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:29,069 INFO L130 PetriNetUnfolder]: 653/2286 cut-off events. [2022-11-18 20:19:29,069 INFO L131 PetriNetUnfolder]: For 1028/1321 co-relation queries the response was YES. [2022-11-18 20:19:29,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4397 conditions, 2286 events. 653/2286 cut-off events. For 1028/1321 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 25723 event pairs, 348 based on Foata normal form. 18/1810 useless extension candidates. Maximal degree in co-relation 4291. Up to 741 conditions per place. [2022-11-18 20:19:29,107 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 40 selfloop transitions, 7 changer transitions 4/281 dead transitions. [2022-11-18 20:19:29,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 281 transitions, 1049 flow [2022-11-18 20:19:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:19:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1661 transitions. [2022-11-18 20:19:29,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8566271273852502 [2022-11-18 20:19:29,111 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1661 transitions. [2022-11-18 20:19:29,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1661 transitions. [2022-11-18 20:19:29,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:29,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1661 transitions. [2022-11-18 20:19:29,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.28571428571428) internal successors, (1661), 7 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:29,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:29,121 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:29,122 INFO L175 Difference]: Start difference. First operand has 330 places, 267 transitions, 911 flow. Second operand 7 states and 1661 transitions. [2022-11-18 20:19:29,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 281 transitions, 1049 flow [2022-11-18 20:19:29,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 281 transitions, 1038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:19:29,134 INFO L231 Difference]: Finished difference. Result has 334 places, 270 transitions, 936 flow [2022-11-18 20:19:29,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=334, PETRI_TRANSITIONS=270} [2022-11-18 20:19:29,136 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 89 predicate places. [2022-11-18 20:19:29,136 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 270 transitions, 936 flow [2022-11-18 20:19:29,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:29,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:29,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:29,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:19:29,138 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:19:29,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:29,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1032119673, now seen corresponding path program 1 times [2022-11-18 20:19:29,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:29,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404681860] [2022-11-18 20:19:29,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:29,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:29,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:29,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404681860] [2022-11-18 20:19:29,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404681860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:29,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:29,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:19:29,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960620522] [2022-11-18 20:19:29,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:29,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:29,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:29,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:29,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:29,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-18 20:19:29,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 270 transitions, 936 flow. Second operand has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:29,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:29,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-18 20:19:29,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:30,299 INFO L130 PetriNetUnfolder]: 605/2225 cut-off events. [2022-11-18 20:19:30,299 INFO L131 PetriNetUnfolder]: For 1080/1357 co-relation queries the response was YES. [2022-11-18 20:19:30,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2225 events. 605/2225 cut-off events. For 1080/1357 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 24567 event pairs, 288 based on Foata normal form. 13/1846 useless extension candidates. Maximal degree in co-relation 4493. Up to 616 conditions per place. [2022-11-18 20:19:30,339 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 0 selfloop transitions, 0 changer transitions 291/291 dead transitions. [2022-11-18 20:19:30,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 291 transitions, 1130 flow [2022-11-18 20:19:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:19:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1667 transitions. [2022-11-18 20:19:30,344 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8597215059308922 [2022-11-18 20:19:30,344 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1667 transitions. [2022-11-18 20:19:30,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1667 transitions. [2022-11-18 20:19:30,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:30,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1667 transitions. [2022-11-18 20:19:30,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.14285714285714) internal successors, (1667), 7 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:30,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:30,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:30,426 INFO L175 Difference]: Start difference. First operand has 334 places, 270 transitions, 936 flow. Second operand 7 states and 1667 transitions. [2022-11-18 20:19:30,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 291 transitions, 1130 flow [2022-11-18 20:19:30,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 291 transitions, 1128 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:19:30,440 INFO L231 Difference]: Finished difference. Result has 338 places, 0 transitions, 0 flow [2022-11-18 20:19:30,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=338, PETRI_TRANSITIONS=0} [2022-11-18 20:19:30,442 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 93 predicate places. [2022-11-18 20:19:30,442 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 0 transitions, 0 flow [2022-11-18 20:19:30,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:30,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-18 20:19:30,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-18 20:19:30,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-18 20:19:30,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-18 20:19:30,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-18 20:19:30,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-18 20:19:30,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-18 20:19:30,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-18 20:19:30,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-18 20:19:30,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-18 20:19:30,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-18 20:19:30,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-18 20:19:30,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-18 20:19:30,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-18 20:19:30,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-18 20:19:30,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-18 20:19:30,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-18 20:19:30,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-18 20:19:30,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-18 20:19:30,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-18 20:19:30,450 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-18 20:19:30,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-18 20:19:30,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-18 20:19:30,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-18 20:19:30,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-18 20:19:30,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-18 20:19:30,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-18 20:19:30,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-18 20:19:30,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-18 20:19:30,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-18 20:19:30,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-18 20:19:30,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-18 20:19:30,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-18 20:19:30,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-18 20:19:30,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-18 20:19:30,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-18 20:19:30,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-18 20:19:30,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-18 20:19:30,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-18 20:19:30,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:19:30,455 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-18 20:19:30,462 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:19:30,462 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:19:30,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:19:30 BasicIcfg [2022-11-18 20:19:30,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:19:30,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:19:30,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:19:30,469 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:19:30,470 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:19:06" (3/4) ... [2022-11-18 20:19:30,473 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:19:30,480 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:19:30,481 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:19:30,481 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 20:19:30,486 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-18 20:19:30,486 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:19:30,487 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:19:30,487 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:19:30,534 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:19:30,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:19:30,535 INFO L158 Benchmark]: Toolchain (without parser) took 25379.34ms. Allocated memory was 102.8MB in the beginning and 639.6MB in the end (delta: 536.9MB). Free memory was 66.7MB in the beginning and 542.2MB in the end (delta: -475.5MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. [2022-11-18 20:19:30,535 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:19:30,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.71ms. Allocated memory is still 102.8MB. Free memory was 66.4MB in the beginning and 77.7MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:19:30,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.63ms. Allocated memory is still 102.8MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:19:30,536 INFO L158 Benchmark]: Boogie Preprocessor took 32.71ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 73.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:19:30,537 INFO L158 Benchmark]: RCFGBuilder took 840.59ms. Allocated memory is still 102.8MB. Free memory was 73.9MB in the beginning and 52.6MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 20:19:30,537 INFO L158 Benchmark]: TraceAbstraction took 24044.22ms. Allocated memory was 102.8MB in the beginning and 639.6MB in the end (delta: 536.9MB). Free memory was 52.2MB in the beginning and 544.3MB in the end (delta: -492.1MB). Peak memory consumption was 390.9MB. Max. memory is 16.1GB. [2022-11-18 20:19:30,538 INFO L158 Benchmark]: Witness Printer took 65.27ms. Allocated memory is still 639.6MB. Free memory was 544.3MB in the beginning and 542.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:19:30,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.71ms. Allocated memory is still 102.8MB. Free memory was 66.4MB in the beginning and 77.7MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.63ms. Allocated memory is still 102.8MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.71ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 73.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 840.59ms. Allocated memory is still 102.8MB. Free memory was 73.9MB in the beginning and 52.6MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 24044.22ms. Allocated memory was 102.8MB in the beginning and 639.6MB in the end (delta: 536.9MB). Free memory was 52.2MB in the beginning and 544.3MB in the end (delta: -492.1MB). Peak memory consumption was 390.9MB. Max. memory is 16.1GB. * Witness Printer took 65.27ms. Allocated memory is still 639.6MB. Free memory was 544.3MB in the beginning and 542.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 433 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.7s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1526 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1526 mSDsluCounter, 740 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 363 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2399 IncrementalHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 377 mSDtfsCounter, 2399 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=936occurred in iteration=26, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1986 ConstructedInterpolants, 0 QuantifiedInterpolants, 4157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:19:30,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d865f51f-94c4-46e6-a576-c85692379644/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE