./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:46:52,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:46:52,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:46:52,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:46:52,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:46:52,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:46:52,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:46:52,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:46:52,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:46:52,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:46:52,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:46:52,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:46:52,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:46:52,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:46:52,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:46:52,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:46:52,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:46:52,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:46:52,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:46:52,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:46:52,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:46:52,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:46:52,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:46:52,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:46:52,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:46:52,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:46:52,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:46:52,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:46:52,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:46:52,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:46:52,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:46:52,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:46:52,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:46:52,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:46:52,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:46:52,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:46:52,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:46:52,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:46:52,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:46:52,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:46:52,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:46:52,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:46:52,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:46:52,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:46:52,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:46:52,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:46:53,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:46:53,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:46:53,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:46:53,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:46:53,003 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:46:53,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:46:53,005 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:46:53,005 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:46:53,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:46:53,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:46:53,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:46:53,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:46:53,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:46:53,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:46:53,007 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:46:53,007 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:46:53,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:46:53,008 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:46:53,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:46:53,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:46:53,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:46:53,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:46:53,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:53,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:46:53,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:46:53,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:46:53,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:46:53,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:46:53,013 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:46:53,013 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:46:53,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:46:53,014 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_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2022-11-20 11:46:53,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:46:53,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:46:53,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:46:53,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:46:53,441 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:46:53,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2022-11-20 11:46:57,425 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:46:57,653 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:46:57,653 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2022-11-20 11:46:57,663 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/data/e967be46a/4d547d87b58b46cea6b5122c921e2e1b/FLAGd10294f13 [2022-11-20 11:46:57,679 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/data/e967be46a/4d547d87b58b46cea6b5122c921e2e1b [2022-11-20 11:46:57,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:46:57,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:46:57,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:57,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:46:57,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:46:57,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:57" (1/1) ... [2022-11-20 11:46:57,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e8edee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:57, skipping insertion in model container [2022-11-20 11:46:57,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:57" (1/1) ... [2022-11-20 11:46:57,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:46:57,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:46:57,963 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-11-20 11:46:57,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:46:57,985 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:46:58,041 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-11-20 11:46:58,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:46:58,061 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:46:58,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58 WrapperNode [2022-11-20 11:46:58,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:46:58,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:46:58,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:46:58,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:46:58,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,150 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 358 [2022-11-20 11:46:58,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:46:58,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:46:58,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:46:58,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:46:58,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:46:58,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:46:58,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:46:58,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:46:58,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (1/1) ... [2022-11-20 11:46:58,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:46:58,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:58,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:46:58,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:46:58,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:46:58,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:46:58,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:46:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:46:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:46:58,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:46:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:46:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:46:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:46:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:46:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:46:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:46:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:46:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:46:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:46:58,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:46:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:46:58,304 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:46:58,486 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:46:58,490 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:46:59,299 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:46:59,740 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:46:59,740 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 11:46:59,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:59 BoogieIcfgContainer [2022-11-20 11:46:59,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:46:59,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:46:59,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:46:59,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:46:59,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:46:57" (1/3) ... [2022-11-20 11:46:59,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2758c5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:59, skipping insertion in model container [2022-11-20 11:46:59,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:58" (2/3) ... [2022-11-20 11:46:59,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2758c5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:59, skipping insertion in model container [2022-11-20 11:46:59,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:59" (3/3) ... [2022-11-20 11:46:59,758 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2022-11-20 11:46:59,770 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:46:59,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:46:59,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-20 11:46:59,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:46:59,942 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:47:00,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 300 transitions, 624 flow [2022-11-20 11:47:00,138 INFO L130 PetriNetUnfolder]: 27/297 cut-off events. [2022-11-20 11:47:00,139 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:47:00,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 297 events. 27/297 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 291 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 253. Up to 6 conditions per place. [2022-11-20 11:47:00,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 300 transitions, 624 flow [2022-11-20 11:47:00,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 276 transitions, 567 flow [2022-11-20 11:47:00,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:47:00,179 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;@616cb44b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:47:00,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-20 11:47:00,201 INFO L130 PetriNetUnfolder]: 3/78 cut-off events. [2022-11-20 11:47:00,202 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:47:00,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:00,203 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] [2022-11-20 11:47:00,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:00,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:00,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1432281183, now seen corresponding path program 1 times [2022-11-20 11:47:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:00,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775028273] [2022-11-20 11:47:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:00,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:00,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:00,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775028273] [2022-11-20 11:47:00,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775028273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:00,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:00,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:00,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459091824] [2022-11-20 11:47:00,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:00,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:00,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:47:00,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-20 11:47:00,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 276 transitions, 567 flow. Second operand has 4 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:00,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:00,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-20 11:47:00,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:01,634 INFO L130 PetriNetUnfolder]: 475/1116 cut-off events. [2022-11-20 11:47:01,634 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-20 11:47:01,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 1116 events. 475/1116 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4428 event pairs, 184 based on Foata normal form. 116/866 useless extension candidates. Maximal degree in co-relation 706. Up to 344 conditions per place. [2022-11-20 11:47:01,662 INFO L137 encePairwiseOnDemand]: 260/300 looper letters, 90 selfloop transitions, 14 changer transitions 6/303 dead transitions. [2022-11-20 11:47:01,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 303 transitions, 844 flow [2022-11-20 11:47:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:47:01,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:47:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1244 transitions. [2022-11-20 11:47:01,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8293333333333334 [2022-11-20 11:47:01,696 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1244 transitions. [2022-11-20 11:47:01,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1244 transitions. [2022-11-20 11:47:01,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:01,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1244 transitions. [2022-11-20 11:47:01,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 248.8) internal successors, (1244), 5 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:01,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:01,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:01,734 INFO L175 Difference]: Start difference. First operand has 260 places, 276 transitions, 567 flow. Second operand 5 states and 1244 transitions. [2022-11-20 11:47:01,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 303 transitions, 844 flow [2022-11-20 11:47:01,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 303 transitions, 826 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:47:01,759 INFO L231 Difference]: Finished difference. Result has 254 places, 261 transitions, 610 flow [2022-11-20 11:47:01,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=610, PETRI_PLACES=254, PETRI_TRANSITIONS=261} [2022-11-20 11:47:01,770 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, -6 predicate places. [2022-11-20 11:47:01,770 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 261 transitions, 610 flow [2022-11-20 11:47:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:01,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:01,772 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:01,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:47:01,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:01,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:01,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1564663076, now seen corresponding path program 1 times [2022-11-20 11:47:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:01,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720166367] [2022-11-20 11:47:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:01,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:02,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:02,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720166367] [2022-11-20 11:47:02,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720166367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:02,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687149895] [2022-11-20 11:47:02,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:02,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:02,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:02,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:02,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:47:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:02,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:47:02,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:02,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:02,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687149895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:02,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:02,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:47:02,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960245348] [2022-11-20 11:47:02,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:02,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:47:02,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:02,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:47:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:47:02,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-20 11:47:02,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 261 transitions, 610 flow. Second operand has 12 states, 12 states have (on average 222.66666666666666) internal successors, (2672), 12 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:02,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:02,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-20 11:47:02,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:04,405 INFO L130 PetriNetUnfolder]: 1186/2628 cut-off events. [2022-11-20 11:47:04,406 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-11-20 11:47:04,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 2628 events. 1186/2628 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13334 event pairs, 460 based on Foata normal form. 9/1752 useless extension candidates. Maximal degree in co-relation 3228. Up to 335 conditions per place. [2022-11-20 11:47:04,440 INFO L137 encePairwiseOnDemand]: 277/300 looper letters, 189 selfloop transitions, 62 changer transitions 0/444 dead transitions. [2022-11-20 11:47:04,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 444 transitions, 1580 flow [2022-11-20 11:47:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:47:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:47:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4220 transitions. [2022-11-20 11:47:04,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7814814814814814 [2022-11-20 11:47:04,454 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4220 transitions. [2022-11-20 11:47:04,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4220 transitions. [2022-11-20 11:47:04,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:04,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4220 transitions. [2022-11-20 11:47:04,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 234.44444444444446) internal successors, (4220), 18 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:04,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 300.0) internal successors, (5700), 19 states have internal predecessors, (5700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:04,488 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 300.0) internal successors, (5700), 19 states have internal predecessors, (5700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:04,489 INFO L175 Difference]: Start difference. First operand has 254 places, 261 transitions, 610 flow. Second operand 18 states and 4220 transitions. [2022-11-20 11:47:04,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 444 transitions, 1580 flow [2022-11-20 11:47:04,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 444 transitions, 1572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:47:04,505 INFO L231 Difference]: Finished difference. Result has 268 places, 303 transitions, 972 flow [2022-11-20 11:47:04,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=972, PETRI_PLACES=268, PETRI_TRANSITIONS=303} [2022-11-20 11:47:04,507 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 8 predicate places. [2022-11-20 11:47:04,508 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 303 transitions, 972 flow [2022-11-20 11:47:04,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 222.66666666666666) internal successors, (2672), 12 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:04,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:04,511 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:04,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:04,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 11:47:04,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:04,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1259914013, now seen corresponding path program 1 times [2022-11-20 11:47:04,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:04,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040564499] [2022-11-20 11:47:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:04,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:04,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:04,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040564499] [2022-11-20 11:47:04,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040564499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:04,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354915843] [2022-11-20 11:47:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:04,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:04,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:04,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:04,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:47:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:05,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:47:05,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:05,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:05,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354915843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:05,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:47:05,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:47:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686205852] [2022-11-20 11:47:05,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:47:05,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-20 11:47:05,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 303 transitions, 972 flow. Second operand has 6 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:05,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:05,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-20 11:47:05,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:06,328 INFO L130 PetriNetUnfolder]: 1186/2616 cut-off events. [2022-11-20 11:47:06,328 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2022-11-20 11:47:06,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4622 conditions, 2616 events. 1186/2616 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13247 event pairs, 460 based on Foata normal form. 12/1743 useless extension candidates. Maximal degree in co-relation 3654. Up to 1268 conditions per place. [2022-11-20 11:47:06,362 INFO L137 encePairwiseOnDemand]: 283/300 looper letters, 91 selfloop transitions, 43 changer transitions 0/327 dead transitions. [2022-11-20 11:47:06,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 327 transitions, 1243 flow [2022-11-20 11:47:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:47:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:47:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1644 transitions. [2022-11-20 11:47:06,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7828571428571428 [2022-11-20 11:47:06,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1644 transitions. [2022-11-20 11:47:06,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1644 transitions. [2022-11-20 11:47:06,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:06,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1644 transitions. [2022-11-20 11:47:06,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.85714285714286) internal successors, (1644), 7 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,381 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,382 INFO L175 Difference]: Start difference. First operand has 268 places, 303 transitions, 972 flow. Second operand 7 states and 1644 transitions. [2022-11-20 11:47:06,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 327 transitions, 1243 flow [2022-11-20 11:47:06,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 327 transitions, 1127 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 11:47:06,394 INFO L231 Difference]: Finished difference. Result has 262 places, 291 transitions, 861 flow [2022-11-20 11:47:06,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=861, PETRI_PLACES=262, PETRI_TRANSITIONS=291} [2022-11-20 11:47:06,396 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 2 predicate places. [2022-11-20 11:47:06,397 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 291 transitions, 861 flow [2022-11-20 11:47:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:06,398 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:06,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:06,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:06,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash 193866849, now seen corresponding path program 2 times [2022-11-20 11:47:06,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:06,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710391074] [2022-11-20 11:47:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:06,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:07,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:07,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710391074] [2022-11-20 11:47:07,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710391074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:07,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196700386] [2022-11-20 11:47:07,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:47:07,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:07,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:07,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:07,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:47:07,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:47:07,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:07,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:47:07,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:47:07,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:47:07,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196700386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:07,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:07,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:47:07,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407331727] [2022-11-20 11:47:07,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:07,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:47:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:47:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:47:07,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 300 [2022-11-20 11:47:07,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 291 transitions, 861 flow. Second operand has 18 states, 18 states have (on average 203.61111111111111) internal successors, (3665), 18 states have internal predecessors, (3665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:07,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:07,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 300 [2022-11-20 11:47:07,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:10,267 INFO L130 PetriNetUnfolder]: 687/2041 cut-off events. [2022-11-20 11:47:10,267 INFO L131 PetriNetUnfolder]: For 273/273 co-relation queries the response was YES. [2022-11-20 11:47:10,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 2041 events. 687/2041 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 9546 event pairs, 161 based on Foata normal form. 6/1627 useless extension candidates. Maximal degree in co-relation 2256. Up to 210 conditions per place. [2022-11-20 11:47:10,290 INFO L137 encePairwiseOnDemand]: 268/300 looper letters, 234 selfloop transitions, 97 changer transitions 0/504 dead transitions. [2022-11-20 11:47:10,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 504 transitions, 2086 flow [2022-11-20 11:47:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 11:47:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 11:47:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10165 transitions. [2022-11-20 11:47:10,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6914965986394558 [2022-11-20 11:47:10,317 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10165 transitions. [2022-11-20 11:47:10,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10165 transitions. [2022-11-20 11:47:10,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:10,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10165 transitions. [2022-11-20 11:47:10,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 207.44897959183675) internal successors, (10165), 49 states have internal predecessors, (10165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:10,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 300.0) internal successors, (15000), 50 states have internal predecessors, (15000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:10,390 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 300.0) internal successors, (15000), 50 states have internal predecessors, (15000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:10,391 INFO L175 Difference]: Start difference. First operand has 262 places, 291 transitions, 861 flow. Second operand 49 states and 10165 transitions. [2022-11-20 11:47:10,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 504 transitions, 2086 flow [2022-11-20 11:47:10,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 504 transitions, 2017 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:47:10,404 INFO L231 Difference]: Finished difference. Result has 304 places, 327 transitions, 1196 flow [2022-11-20 11:47:10,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1196, PETRI_PLACES=304, PETRI_TRANSITIONS=327} [2022-11-20 11:47:10,406 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 44 predicate places. [2022-11-20 11:47:10,406 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 327 transitions, 1196 flow [2022-11-20 11:47:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 203.61111111111111) internal successors, (3665), 18 states have internal predecessors, (3665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:10,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:10,409 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:10,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:10,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:10,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:10,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash -297925276, now seen corresponding path program 1 times [2022-11-20 11:47:10,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:10,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092819488] [2022-11-20 11:47:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:10,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:10,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:10,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092819488] [2022-11-20 11:47:10,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092819488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:10,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:10,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:10,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285852729] [2022-11-20 11:47:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:10,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:47:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:47:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:47:10,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 300 [2022-11-20 11:47:10,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 327 transitions, 1196 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:10,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:10,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 300 [2022-11-20 11:47:10,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:12,092 INFO L130 PetriNetUnfolder]: 1828/3763 cut-off events. [2022-11-20 11:47:12,093 INFO L131 PetriNetUnfolder]: For 347/354 co-relation queries the response was YES. [2022-11-20 11:47:12,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6865 conditions, 3763 events. 1828/3763 cut-off events. For 347/354 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 19538 event pairs, 105 based on Foata normal form. 0/2860 useless extension candidates. Maximal degree in co-relation 6541. Up to 1870 conditions per place. [2022-11-20 11:47:12,150 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 33 selfloop transitions, 4 changer transitions 0/338 dead transitions. [2022-11-20 11:47:12,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 338 transitions, 1297 flow [2022-11-20 11:47:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:47:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:47:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2022-11-20 11:47:12,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8655555555555555 [2022-11-20 11:47:12,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2022-11-20 11:47:12,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2022-11-20 11:47:12,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:12,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2022-11-20 11:47:12,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:12,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:12,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:12,171 INFO L175 Difference]: Start difference. First operand has 304 places, 327 transitions, 1196 flow. Second operand 3 states and 779 transitions. [2022-11-20 11:47:12,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 338 transitions, 1297 flow [2022-11-20 11:47:12,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 338 transitions, 1174 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-20 11:47:12,182 INFO L231 Difference]: Finished difference. Result has 293 places, 328 transitions, 1095 flow [2022-11-20 11:47:12,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1095, PETRI_PLACES=293, PETRI_TRANSITIONS=328} [2022-11-20 11:47:12,186 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 33 predicate places. [2022-11-20 11:47:12,186 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 328 transitions, 1095 flow [2022-11-20 11:47:12,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:12,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:12,187 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:12,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:47:12,188 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:12,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:12,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1242525155, now seen corresponding path program 1 times [2022-11-20 11:47:12,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:12,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863619017] [2022-11-20 11:47:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:12,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:47:12,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:12,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863619017] [2022-11-20 11:47:12,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863619017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:12,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:12,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:47:12,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555415820] [2022-11-20 11:47:12,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:12,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:12,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:12,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:12,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:47:12,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 300 [2022-11-20 11:47:12,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 328 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 222.83333333333334) internal successors, (1337), 6 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:12,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:12,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 300 [2022-11-20 11:47:12,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:13,368 INFO L130 PetriNetUnfolder]: 856/2546 cut-off events. [2022-11-20 11:47:13,369 INFO L131 PetriNetUnfolder]: For 708/747 co-relation queries the response was YES. [2022-11-20 11:47:13,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 2546 events. 856/2546 cut-off events. For 708/747 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 13419 event pairs, 226 based on Foata normal form. 17/2073 useless extension candidates. Maximal degree in co-relation 4134. Up to 1013 conditions per place. [2022-11-20 11:47:13,402 INFO L137 encePairwiseOnDemand]: 289/300 looper letters, 128 selfloop transitions, 7 changer transitions 0/343 dead transitions. [2022-11-20 11:47:13,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 343 transitions, 1409 flow [2022-11-20 11:47:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:47:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:47:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1603 transitions. [2022-11-20 11:47:13,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-11-20 11:47:13,407 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1603 transitions. [2022-11-20 11:47:13,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1603 transitions. [2022-11-20 11:47:13,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:13,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1603 transitions. [2022-11-20 11:47:13,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,418 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,418 INFO L175 Difference]: Start difference. First operand has 293 places, 328 transitions, 1095 flow. Second operand 7 states and 1603 transitions. [2022-11-20 11:47:13,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 343 transitions, 1409 flow [2022-11-20 11:47:13,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 343 transitions, 1397 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:47:13,431 INFO L231 Difference]: Finished difference. Result has 298 places, 328 transitions, 1110 flow [2022-11-20 11:47:13,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1110, PETRI_PLACES=298, PETRI_TRANSITIONS=328} [2022-11-20 11:47:13,432 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 38 predicate places. [2022-11-20 11:47:13,433 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 328 transitions, 1110 flow [2022-11-20 11:47:13,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.83333333333334) internal successors, (1337), 6 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:13,434 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:13,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:47:13,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:13,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:13,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1320361919, now seen corresponding path program 1 times [2022-11-20 11:47:13,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:13,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022701994] [2022-11-20 11:47:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:13,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:13,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022701994] [2022-11-20 11:47:13,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022701994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:13,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986648323] [2022-11-20 11:47:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:13,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:13,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:13,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:13,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:47:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:14,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:47:14,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:14,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:14,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986648323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:14,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:14,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 11:47:14,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685980237] [2022-11-20 11:47:14,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:14,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:47:14,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:14,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:47:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:47:14,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-20 11:47:14,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 328 transitions, 1110 flow. Second operand has 32 states, 32 states have (on average 223.28125) internal successors, (7145), 32 states have internal predecessors, (7145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:14,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:14,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-20 11:47:14,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:18,676 INFO L130 PetriNetUnfolder]: 1920/5489 cut-off events. [2022-11-20 11:47:18,676 INFO L131 PetriNetUnfolder]: For 1357/1444 co-relation queries the response was YES. [2022-11-20 11:47:18,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10170 conditions, 5489 events. 1920/5489 cut-off events. For 1357/1444 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 33406 event pairs, 514 based on Foata normal form. 16/4333 useless extension candidates. Maximal degree in co-relation 9418. Up to 645 conditions per place. [2022-11-20 11:47:18,755 INFO L137 encePairwiseOnDemand]: 281/300 looper letters, 484 selfloop transitions, 160 changer transitions 0/844 dead transitions. [2022-11-20 11:47:18,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 844 transitions, 4244 flow [2022-11-20 11:47:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 11:47:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 11:47:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10340 transitions. [2022-11-20 11:47:18,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2022-11-20 11:47:18,783 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10340 transitions. [2022-11-20 11:47:18,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10340 transitions. [2022-11-20 11:47:18,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:18,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10340 transitions. [2022-11-20 11:47:18,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 235.0) internal successors, (10340), 44 states have internal predecessors, (10340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 300.0) internal successors, (13500), 45 states have internal predecessors, (13500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,857 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 300.0) internal successors, (13500), 45 states have internal predecessors, (13500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,857 INFO L175 Difference]: Start difference. First operand has 298 places, 328 transitions, 1110 flow. Second operand 44 states and 10340 transitions. [2022-11-20 11:47:18,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 844 transitions, 4244 flow [2022-11-20 11:47:18,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 844 transitions, 4234 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:47:18,886 INFO L231 Difference]: Finished difference. Result has 346 places, 421 transitions, 2110 flow [2022-11-20 11:47:18,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2110, PETRI_PLACES=346, PETRI_TRANSITIONS=421} [2022-11-20 11:47:18,887 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 86 predicate places. [2022-11-20 11:47:18,888 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 421 transitions, 2110 flow [2022-11-20 11:47:18,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 223.28125) internal successors, (7145), 32 states have internal predecessors, (7145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:18,892 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:18,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:19,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:19,103 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:19,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash -65696606, now seen corresponding path program 1 times [2022-11-20 11:47:19,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:19,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637552987] [2022-11-20 11:47:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:19,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:19,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:19,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637552987] [2022-11-20 11:47:19,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637552987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:19,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:19,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:19,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211713207] [2022-11-20 11:47:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:19,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:47:19,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:47:19,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:47:19,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 300 [2022-11-20 11:47:19,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 421 transitions, 2110 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:19,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:19,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 300 [2022-11-20 11:47:19,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:22,286 INFO L130 PetriNetUnfolder]: 4426/9179 cut-off events. [2022-11-20 11:47:22,286 INFO L131 PetriNetUnfolder]: For 2035/2050 co-relation queries the response was YES. [2022-11-20 11:47:22,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18846 conditions, 9179 events. 4426/9179 cut-off events. For 2035/2050 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 57820 event pairs, 1069 based on Foata normal form. 0/7166 useless extension candidates. Maximal degree in co-relation 18140. Up to 4081 conditions per place. [2022-11-20 11:47:22,417 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 36 selfloop transitions, 3 changer transitions 0/433 dead transitions. [2022-11-20 11:47:22,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 433 transitions, 2223 flow [2022-11-20 11:47:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:47:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:47:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 781 transitions. [2022-11-20 11:47:22,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8677777777777778 [2022-11-20 11:47:22,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 781 transitions. [2022-11-20 11:47:22,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 781 transitions. [2022-11-20 11:47:22,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:22,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 781 transitions. [2022-11-20 11:47:22,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,425 INFO L175 Difference]: Start difference. First operand has 346 places, 421 transitions, 2110 flow. Second operand 3 states and 781 transitions. [2022-11-20 11:47:22,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 433 transitions, 2223 flow [2022-11-20 11:47:22,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 433 transitions, 2121 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-20 11:47:22,449 INFO L231 Difference]: Finished difference. Result has 335 places, 422 transitions, 2028 flow [2022-11-20 11:47:22,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2028, PETRI_PLACES=335, PETRI_TRANSITIONS=422} [2022-11-20 11:47:22,451 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 75 predicate places. [2022-11-20 11:47:22,451 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 422 transitions, 2028 flow [2022-11-20 11:47:22,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:22,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:47:22,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1321106971, now seen corresponding path program 1 times [2022-11-20 11:47:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:22,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374417293] [2022-11-20 11:47:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:22,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:22,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374417293] [2022-11-20 11:47:22,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374417293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:22,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:22,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:22,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567202575] [2022-11-20 11:47:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:22,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:47:22,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:22,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:47:22,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:47:22,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 300 [2022-11-20 11:47:22,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 422 transitions, 2028 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:22,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 300 [2022-11-20 11:47:22,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:26,136 INFO L130 PetriNetUnfolder]: 5255/12172 cut-off events. [2022-11-20 11:47:26,136 INFO L131 PetriNetUnfolder]: For 6221/6858 co-relation queries the response was YES. [2022-11-20 11:47:26,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24511 conditions, 12172 events. 5255/12172 cut-off events. For 6221/6858 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 89210 event pairs, 693 based on Foata normal form. 0/9727 useless extension candidates. Maximal degree in co-relation 23819. Up to 4029 conditions per place. [2022-11-20 11:47:26,451 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 30 selfloop transitions, 4 changer transitions 0/434 dead transitions. [2022-11-20 11:47:26,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 434 transitions, 2142 flow [2022-11-20 11:47:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:47:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:47:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 788 transitions. [2022-11-20 11:47:26,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755555555555555 [2022-11-20 11:47:26,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 788 transitions. [2022-11-20 11:47:26,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 788 transitions. [2022-11-20 11:47:26,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:26,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 788 transitions. [2022-11-20 11:47:26,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:26,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:26,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:26,459 INFO L175 Difference]: Start difference. First operand has 335 places, 422 transitions, 2028 flow. Second operand 3 states and 788 transitions. [2022-11-20 11:47:26,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 434 transitions, 2142 flow [2022-11-20 11:47:26,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 434 transitions, 2132 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:47:26,491 INFO L231 Difference]: Finished difference. Result has 337 places, 423 transitions, 2044 flow [2022-11-20 11:47:26,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2044, PETRI_PLACES=337, PETRI_TRANSITIONS=423} [2022-11-20 11:47:26,493 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 77 predicate places. [2022-11-20 11:47:26,494 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 423 transitions, 2044 flow [2022-11-20 11:47:26,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:26,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:26,495 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:26,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:47:26,495 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:26,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:26,496 INFO L85 PathProgramCache]: Analyzing trace with hash -100585735, now seen corresponding path program 1 times [2022-11-20 11:47:26,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:26,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894795708] [2022-11-20 11:47:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:26,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:47:26,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:26,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894795708] [2022-11-20 11:47:26,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894795708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:26,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398435871] [2022-11-20 11:47:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:26,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:26,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:26,864 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:26,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:47:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:27,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:47:27,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:47:27,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:27,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398435871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:27,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:47:27,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 11:47:27,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353110143] [2022-11-20 11:47:27,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:27,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:27,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:27,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:47:27,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 300 [2022-11-20 11:47:27,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 423 transitions, 2044 flow. Second operand has 4 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:27,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:27,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 300 [2022-11-20 11:47:27,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:29,111 INFO L130 PetriNetUnfolder]: 1634/6006 cut-off events. [2022-11-20 11:47:29,111 INFO L131 PetriNetUnfolder]: For 2816/3123 co-relation queries the response was YES. [2022-11-20 11:47:29,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10906 conditions, 6006 events. 1634/6006 cut-off events. For 2816/3123 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 40994 event pairs, 348 based on Foata normal form. 70/5541 useless extension candidates. Maximal degree in co-relation 10210. Up to 1990 conditions per place. [2022-11-20 11:47:29,184 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 18 selfloop transitions, 3 changer transitions 0/421 dead transitions. [2022-11-20 11:47:29,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 421 transitions, 2078 flow [2022-11-20 11:47:29,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:47:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:47:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1023 transitions. [2022-11-20 11:47:29,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8525 [2022-11-20 11:47:29,189 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1023 transitions. [2022-11-20 11:47:29,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1023 transitions. [2022-11-20 11:47:29,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:29,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1023 transitions. [2022-11-20 11:47:29,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:29,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:29,203 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:29,203 INFO L175 Difference]: Start difference. First operand has 337 places, 423 transitions, 2044 flow. Second operand 4 states and 1023 transitions. [2022-11-20 11:47:29,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 421 transitions, 2078 flow [2022-11-20 11:47:29,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 421 transitions, 2070 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:47:29,233 INFO L231 Difference]: Finished difference. Result has 336 places, 421 transitions, 2034 flow [2022-11-20 11:47:29,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2034, PETRI_PLACES=336, PETRI_TRANSITIONS=421} [2022-11-20 11:47:29,237 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 76 predicate places. [2022-11-20 11:47:29,237 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 421 transitions, 2034 flow [2022-11-20 11:47:29,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:29,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:29,238 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:29,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:29,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:47:29,446 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2073854548, now seen corresponding path program 1 times [2022-11-20 11:47:29,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:29,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999211393] [2022-11-20 11:47:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:29,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:29,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:29,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999211393] [2022-11-20 11:47:29,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999211393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:29,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:29,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:47:29,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116824098] [2022-11-20 11:47:29,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:29,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:29,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:29,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:47:29,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 300 [2022-11-20 11:47:29,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 421 transitions, 2034 flow. Second operand has 6 states, 6 states have (on average 223.16666666666666) internal successors, (1339), 6 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:29,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:29,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 300 [2022-11-20 11:47:29,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:31,855 INFO L130 PetriNetUnfolder]: 1706/7522 cut-off events. [2022-11-20 11:47:31,855 INFO L131 PetriNetUnfolder]: For 3414/3781 co-relation queries the response was YES. [2022-11-20 11:47:31,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13302 conditions, 7522 events. 1706/7522 cut-off events. For 3414/3781 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 56887 event pairs, 348 based on Foata normal form. 135/7032 useless extension candidates. Maximal degree in co-relation 12236. Up to 2164 conditions per place. [2022-11-20 11:47:31,943 INFO L137 encePairwiseOnDemand]: 288/300 looper letters, 255 selfloop transitions, 29 changer transitions 13/534 dead transitions. [2022-11-20 11:47:31,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 534 transitions, 3302 flow [2022-11-20 11:47:31,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:47:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:47:31,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2053 transitions. [2022-11-20 11:47:31,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7603703703703704 [2022-11-20 11:47:31,950 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2053 transitions. [2022-11-20 11:47:31,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2053 transitions. [2022-11-20 11:47:31,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:31,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2053 transitions. [2022-11-20 11:47:31,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 228.11111111111111) internal successors, (2053), 9 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:31,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:31,966 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:31,966 INFO L175 Difference]: Start difference. First operand has 336 places, 421 transitions, 2034 flow. Second operand 9 states and 2053 transitions. [2022-11-20 11:47:31,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 534 transitions, 3302 flow [2022-11-20 11:47:31,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 534 transitions, 3296 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:47:32,007 INFO L231 Difference]: Finished difference. Result has 343 places, 422 transitions, 2102 flow [2022-11-20 11:47:32,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2102, PETRI_PLACES=343, PETRI_TRANSITIONS=422} [2022-11-20 11:47:32,009 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 83 predicate places. [2022-11-20 11:47:32,009 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 422 transitions, 2102 flow [2022-11-20 11:47:32,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.16666666666666) internal successors, (1339), 6 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:32,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:32,010 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:32,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:47:32,011 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1129188039, now seen corresponding path program 1 times [2022-11-20 11:47:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:32,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357175647] [2022-11-20 11:47:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:32,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:47:32,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:32,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357175647] [2022-11-20 11:47:32,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357175647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:32,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:32,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:32,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243669070] [2022-11-20 11:47:32,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:32,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:32,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:47:32,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 300 [2022-11-20 11:47:32,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 422 transitions, 2102 flow. Second operand has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:32,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:32,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 300 [2022-11-20 11:47:32,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:35,653 INFO L130 PetriNetUnfolder]: 2689/10429 cut-off events. [2022-11-20 11:47:35,653 INFO L131 PetriNetUnfolder]: For 5057/5657 co-relation queries the response was YES. [2022-11-20 11:47:35,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19314 conditions, 10429 events. 2689/10429 cut-off events. For 5057/5657 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 85293 event pairs, 343 based on Foata normal form. 262/9713 useless extension candidates. Maximal degree in co-relation 17822. Up to 1907 conditions per place. [2022-11-20 11:47:35,769 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 34 selfloop transitions, 6 changer transitions 1/434 dead transitions. [2022-11-20 11:47:35,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 434 transitions, 2231 flow [2022-11-20 11:47:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:47:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:47:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1032 transitions. [2022-11-20 11:47:35,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86 [2022-11-20 11:47:35,773 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1032 transitions. [2022-11-20 11:47:35,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1032 transitions. [2022-11-20 11:47:35,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:35,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1032 transitions. [2022-11-20 11:47:35,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:35,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:35,780 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:35,780 INFO L175 Difference]: Start difference. First operand has 343 places, 422 transitions, 2102 flow. Second operand 4 states and 1032 transitions. [2022-11-20 11:47:35,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 434 transitions, 2231 flow [2022-11-20 11:47:35,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 434 transitions, 2200 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:47:35,812 INFO L231 Difference]: Finished difference. Result has 343 places, 422 transitions, 2088 flow [2022-11-20 11:47:35,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2088, PETRI_PLACES=343, PETRI_TRANSITIONS=422} [2022-11-20 11:47:35,814 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 83 predicate places. [2022-11-20 11:47:35,814 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 422 transitions, 2088 flow [2022-11-20 11:47:35,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:35,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:35,815 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:35,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:47:35,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1680058163, now seen corresponding path program 1 times [2022-11-20 11:47:35,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:35,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273434203] [2022-11-20 11:47:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:35,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:35,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:35,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273434203] [2022-11-20 11:47:35,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273434203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:35,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:35,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:35,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178446043] [2022-11-20 11:47:35,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:35,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:47:35,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:35,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:47:35,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:47:35,903 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 300 [2022-11-20 11:47:35,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 422 transitions, 2088 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:35,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:35,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 300 [2022-11-20 11:47:35,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:40,537 INFO L130 PetriNetUnfolder]: 6402/15639 cut-off events. [2022-11-20 11:47:40,537 INFO L131 PetriNetUnfolder]: For 10173/11181 co-relation queries the response was YES. [2022-11-20 11:47:40,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35299 conditions, 15639 events. 6402/15639 cut-off events. For 10173/11181 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 118753 event pairs, 1302 based on Foata normal form. 126/14561 useless extension candidates. Maximal degree in co-relation 32640. Up to 6582 conditions per place. [2022-11-20 11:47:40,750 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 36 selfloop transitions, 3 changer transitions 0/434 dead transitions. [2022-11-20 11:47:40,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 434 transitions, 2213 flow [2022-11-20 11:47:40,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:47:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:47:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2022-11-20 11:47:40,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-20 11:47:40,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2022-11-20 11:47:40,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2022-11-20 11:47:40,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:40,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2022-11-20 11:47:40,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:40,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:40,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:40,761 INFO L175 Difference]: Start difference. First operand has 343 places, 422 transitions, 2088 flow. Second operand 3 states and 780 transitions. [2022-11-20 11:47:40,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 434 transitions, 2213 flow [2022-11-20 11:47:40,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 434 transitions, 2203 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:47:40,802 INFO L231 Difference]: Finished difference. Result has 344 places, 423 transitions, 2100 flow [2022-11-20 11:47:40,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2100, PETRI_PLACES=344, PETRI_TRANSITIONS=423} [2022-11-20 11:47:40,804 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 84 predicate places. [2022-11-20 11:47:40,804 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 423 transitions, 2100 flow [2022-11-20 11:47:40,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:40,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:40,805 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:40,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:47:40,806 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:40,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:40,807 INFO L85 PathProgramCache]: Analyzing trace with hash 850003623, now seen corresponding path program 1 times [2022-11-20 11:47:40,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:40,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498894143] [2022-11-20 11:47:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:40,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:47:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:41,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498894143] [2022-11-20 11:47:41,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498894143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:41,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:41,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:47:41,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050557742] [2022-11-20 11:47:41,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:41,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:41,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:41,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:41,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:47:41,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 300 [2022-11-20 11:47:41,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 423 transitions, 2100 flow. Second operand has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:41,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:41,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 300 [2022-11-20 11:47:41,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:46,715 INFO L130 PetriNetUnfolder]: 4386/17931 cut-off events. [2022-11-20 11:47:46,715 INFO L131 PetriNetUnfolder]: For 11292/12188 co-relation queries the response was YES. [2022-11-20 11:47:46,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35203 conditions, 17931 events. 4386/17931 cut-off events. For 11292/12188 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 171139 event pairs, 1008 based on Foata normal form. 112/16671 useless extension candidates. Maximal degree in co-relation 32486. Up to 4136 conditions per place. [2022-11-20 11:47:46,902 INFO L137 encePairwiseOnDemand]: 289/300 looper letters, 195 selfloop transitions, 30 changer transitions 17/480 dead transitions. [2022-11-20 11:47:46,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 480 transitions, 2898 flow [2022-11-20 11:47:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:47:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:47:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2045 transitions. [2022-11-20 11:47:46,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7574074074074074 [2022-11-20 11:47:46,907 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2045 transitions. [2022-11-20 11:47:46,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2045 transitions. [2022-11-20 11:47:46,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:46,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2045 transitions. [2022-11-20 11:47:46,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 227.22222222222223) internal successors, (2045), 9 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:46,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:46,920 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:46,920 INFO L175 Difference]: Start difference. First operand has 344 places, 423 transitions, 2100 flow. Second operand 9 states and 2045 transitions. [2022-11-20 11:47:46,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 480 transitions, 2898 flow [2022-11-20 11:47:46,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 480 transitions, 2888 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:47:46,979 INFO L231 Difference]: Finished difference. Result has 351 places, 424 transitions, 2163 flow [2022-11-20 11:47:46,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2163, PETRI_PLACES=351, PETRI_TRANSITIONS=424} [2022-11-20 11:47:46,980 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 91 predicate places. [2022-11-20 11:47:46,981 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 424 transitions, 2163 flow [2022-11-20 11:47:46,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:46,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:46,982 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:46,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:47:46,982 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:46,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:46,983 INFO L85 PathProgramCache]: Analyzing trace with hash 169694673, now seen corresponding path program 1 times [2022-11-20 11:47:46,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:46,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923881289] [2022-11-20 11:47:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:46,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:47:47,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:47,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923881289] [2022-11-20 11:47:47,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923881289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:47,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982510607] [2022-11-20 11:47:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:47,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:47,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:47,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:47,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:47:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:47:47,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 11:47:47,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:47,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982510607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:47,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:47:47,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 11:47:47,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595426466] [2022-11-20 11:47:47,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:47,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:47,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:47,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:47,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:47:47,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 300 [2022-11-20 11:47:47,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 424 transitions, 2163 flow. Second operand has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:47,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:47,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 300 [2022-11-20 11:47:47,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:52,567 INFO L130 PetriNetUnfolder]: 3686/16937 cut-off events. [2022-11-20 11:47:52,568 INFO L131 PetriNetUnfolder]: For 8851/9635 co-relation queries the response was YES. [2022-11-20 11:47:52,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31356 conditions, 16937 events. 3686/16937 cut-off events. For 8851/9635 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 162656 event pairs, 756 based on Foata normal form. 280/15705 useless extension candidates. Maximal degree in co-relation 28923. Up to 4400 conditions per place. [2022-11-20 11:47:52,702 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 9 selfloop transitions, 3 changer transitions 89/422 dead transitions. [2022-11-20 11:47:52,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 422 transitions, 2207 flow [2022-11-20 11:47:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:47:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:47:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2022-11-20 11:47:52,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8508333333333333 [2022-11-20 11:47:52,705 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2022-11-20 11:47:52,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2022-11-20 11:47:52,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:52,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2022-11-20 11:47:52,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:52,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:52,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:52,712 INFO L175 Difference]: Start difference. First operand has 351 places, 424 transitions, 2163 flow. Second operand 4 states and 1021 transitions. [2022-11-20 11:47:52,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 422 transitions, 2207 flow [2022-11-20 11:47:52,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 422 transitions, 2169 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:47:52,762 INFO L231 Difference]: Finished difference. Result has 348 places, 333 transitions, 1861 flow [2022-11-20 11:47:52,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1861, PETRI_PLACES=348, PETRI_TRANSITIONS=333} [2022-11-20 11:47:52,763 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 88 predicate places. [2022-11-20 11:47:52,763 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 333 transitions, 1861 flow [2022-11-20 11:47:52,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:52,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:52,765 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:52,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:52,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:47:52,972 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:47:52,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:52,974 INFO L85 PathProgramCache]: Analyzing trace with hash -600250945, now seen corresponding path program 2 times [2022-11-20 11:47:52,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:52,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550364420] [2022-11-20 11:47:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:52,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:54,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:54,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550364420] [2022-11-20 11:47:54,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550364420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:54,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139964278] [2022-11-20 11:47:54,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:47:54,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:54,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:54,567 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:54,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:47:54,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:47:54,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:54,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:47:54,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-20 11:47:55,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-20 11:47:55,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139964278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:55,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:55,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-20 11:47:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505499049] [2022-11-20 11:47:55,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:55,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 11:47:55,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:55,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 11:47:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 11:47:55,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 300 [2022-11-20 11:47:55,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 333 transitions, 1861 flow. Second operand has 38 states, 38 states have (on average 203.76315789473685) internal successors, (7743), 38 states have internal predecessors, (7743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:55,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:55,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 300 [2022-11-20 11:47:55,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:02,278 INFO L130 PetriNetUnfolder]: 52/2085 cut-off events. [2022-11-20 11:48:02,279 INFO L131 PetriNetUnfolder]: For 3825/3825 co-relation queries the response was YES. [2022-11-20 11:48:02,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 2085 events. 52/2085 cut-off events. For 3825/3825 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 11090 event pairs, 0 based on Foata normal form. 12/2097 useless extension candidates. Maximal degree in co-relation 4940. Up to 205 conditions per place. [2022-11-20 11:48:02,288 INFO L137 encePairwiseOnDemand]: 274/300 looper letters, 253 selfloop transitions, 269 changer transitions 0/630 dead transitions. [2022-11-20 11:48:02,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 630 transitions, 4062 flow [2022-11-20 11:48:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-20 11:48:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-11-20 11:48:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 27526 transitions. [2022-11-20 11:48:02,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6796543209876543 [2022-11-20 11:48:02,334 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 27526 transitions. [2022-11-20 11:48:02,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 27526 transitions. [2022-11-20 11:48:02,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:02,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 27526 transitions. [2022-11-20 11:48:02,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 203.8962962962963) internal successors, (27526), 135 states have internal predecessors, (27526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 300.0) internal successors, (40800), 136 states have internal predecessors, (40800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,470 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 300.0) internal successors, (40800), 136 states have internal predecessors, (40800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,470 INFO L175 Difference]: Start difference. First operand has 348 places, 333 transitions, 1861 flow. Second operand 135 states and 27526 transitions. [2022-11-20 11:48:02,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 630 transitions, 4062 flow [2022-11-20 11:48:02,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 630 transitions, 3967 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 11:48:02,509 INFO L231 Difference]: Finished difference. Result has 403 places, 427 transitions, 2848 flow [2022-11-20 11:48:02,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=2848, PETRI_PLACES=403, PETRI_TRANSITIONS=427} [2022-11-20 11:48:02,511 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 143 predicate places. [2022-11-20 11:48:02,511 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 427 transitions, 2848 flow [2022-11-20 11:48:02,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 203.76315789473685) internal successors, (7743), 38 states have internal predecessors, (7743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:02,514 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:02,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:02,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:48:02,721 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:48:02,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1618056244, now seen corresponding path program 1 times [2022-11-20 11:48:02,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:02,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931553695] [2022-11-20 11:48:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:02,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:04,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931553695] [2022-11-20 11:48:04,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931553695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:04,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197549112] [2022-11-20 11:48:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:04,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:04,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:04,373 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:04,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:48:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:04,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 11:48:04,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:04,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:06,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197549112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:06,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:48:06,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 71 [2022-11-20 11:48:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440350087] [2022-11-20 11:48:06,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:06,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-20 11:48:06,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-20 11:48:06,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2022-11-20 11:48:06,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-20 11:48:06,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 427 transitions, 2848 flow. Second operand has 72 states, 72 states have (on average 223.44444444444446) internal successors, (16088), 72 states have internal predecessors, (16088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:06,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:06,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-20 11:48:06,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:12,479 INFO L130 PetriNetUnfolder]: 71/2229 cut-off events. [2022-11-20 11:48:12,479 INFO L131 PetriNetUnfolder]: For 6286/6286 co-relation queries the response was YES. [2022-11-20 11:48:12,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 2229 events. 71/2229 cut-off events. For 6286/6286 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8900 event pairs, 0 based on Foata normal form. 18/2247 useless extension candidates. Maximal degree in co-relation 5627. Up to 217 conditions per place. [2022-11-20 11:48:12,494 INFO L137 encePairwiseOnDemand]: 282/300 looper letters, 497 selfloop transitions, 380 changer transitions 0/1069 dead transitions. [2022-11-20 11:48:12,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 1069 transitions, 8659 flow [2022-11-20 11:48:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-20 11:48:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-11-20 11:48:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 23775 transitions. [2022-11-20 11:48:12,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620192307692307 [2022-11-20 11:48:12,525 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 23775 transitions. [2022-11-20 11:48:12,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 23775 transitions. [2022-11-20 11:48:12,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:12,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 23775 transitions. [2022-11-20 11:48:12,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 228.60576923076923) internal successors, (23775), 104 states have internal predecessors, (23775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:12,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 300.0) internal successors, (31500), 105 states have internal predecessors, (31500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:12,619 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 300.0) internal successors, (31500), 105 states have internal predecessors, (31500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:12,619 INFO L175 Difference]: Start difference. First operand has 403 places, 427 transitions, 2848 flow. Second operand 104 states and 23775 transitions. [2022-11-20 11:48:12,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 1069 transitions, 8659 flow [2022-11-20 11:48:12,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1069 transitions, 8020 flow, removed 196 selfloop flow, removed 29 redundant places. [2022-11-20 11:48:12,689 INFO L231 Difference]: Finished difference. Result has 496 places, 630 transitions, 5389 flow [2022-11-20 11:48:12,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=5389, PETRI_PLACES=496, PETRI_TRANSITIONS=630} [2022-11-20 11:48:12,690 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 236 predicate places. [2022-11-20 11:48:12,690 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 630 transitions, 5389 flow [2022-11-20 11:48:12,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 223.44444444444446) internal successors, (16088), 72 states have internal predecessors, (16088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:12,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:12,714 INFO L209 CegarLoopForPetriNet]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:12,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 11:48:12,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:48:12,921 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-20 11:48:12,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash 849094732, now seen corresponding path program 2 times [2022-11-20 11:48:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:12,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44064307] [2022-11-20 11:48:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:12,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:18,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:18,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44064307] [2022-11-20 11:48:18,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44064307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:18,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596865541] [2022-11-20 11:48:18,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:48:18,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:18,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:18,430 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:18,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:48:18,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:48:18,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:48:18,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:48:18,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-20 11:48:19,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-20 11:48:20,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596865541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:20,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:48:20,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 7, 7] total 77 [2022-11-20 11:48:20,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014715924] [2022-11-20 11:48:20,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:20,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-20 11:48:20,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-20 11:48:20,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=4593, Unknown=0, NotChecked=0, Total=6006 [2022-11-20 11:48:20,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 300 [2022-11-20 11:48:20,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 630 transitions, 5389 flow. Second operand has 78 states, 78 states have (on average 203.73076923076923) internal successors, (15891), 78 states have internal predecessors, (15891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:20,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:20,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 300 [2022-11-20 11:48:20,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:40,825 INFO L130 PetriNetUnfolder]: 75/2343 cut-off events. [2022-11-20 11:48:40,825 INFO L131 PetriNetUnfolder]: For 6845/6845 co-relation queries the response was YES. [2022-11-20 11:48:40,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6360 conditions, 2343 events. 75/2343 cut-off events. For 6845/6845 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9437 event pairs, 0 based on Foata normal form. 2/2345 useless extension candidates. Maximal degree in co-relation 6314. Up to 209 conditions per place. [2022-11-20 11:48:40,835 INFO L137 encePairwiseOnDemand]: 275/300 looper letters, 0 selfloop transitions, 0 changer transitions 1261/1261 dead transitions. [2022-11-20 11:48:40,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 1261 transitions, 10445 flow [2022-11-20 11:48:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2022-11-20 11:48:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2022-11-20 11:48:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 59923 transitions. [2022-11-20 11:48:40,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6793990929705216 [2022-11-20 11:48:40,899 INFO L72 ComplementDD]: Start complementDD. Operand 294 states and 59923 transitions. [2022-11-20 11:48:40,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 59923 transitions. [2022-11-20 11:48:40,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:40,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 294 states and 59923 transitions. [2022-11-20 11:48:40,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 295 states, 294 states have (on average 203.81972789115648) internal successors, (59923), 294 states have internal predecessors, (59923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:41,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 295 states, 295 states have (on average 300.0) internal successors, (88500), 295 states have internal predecessors, (88500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:41,106 INFO L81 ComplementDD]: Finished complementDD. Result has 295 states, 295 states have (on average 300.0) internal successors, (88500), 295 states have internal predecessors, (88500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:41,107 INFO L175 Difference]: Start difference. First operand has 496 places, 630 transitions, 5389 flow. Second operand 294 states and 59923 transitions. [2022-11-20 11:48:41,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 1261 transitions, 10445 flow [2022-11-20 11:48:41,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 1261 transitions, 9943 flow, removed 3 selfloop flow, removed 79 redundant places. [2022-11-20 11:48:41,177 INFO L231 Difference]: Finished difference. Result has 709 places, 0 transitions, 0 flow [2022-11-20 11:48:41,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=4821, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=294, PETRI_FLOW=0, PETRI_PLACES=709, PETRI_TRANSITIONS=0} [2022-11-20 11:48:41,178 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 449 predicate places. [2022-11-20 11:48:41,178 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 0 transitions, 0 flow [2022-11-20 11:48:41,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 203.73076923076923) internal successors, (15891), 78 states have internal predecessors, (15891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:41,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2022-11-20 11:48:41,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-11-20 11:48:41,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-11-20 11:48:41,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-11-20 11:48:41,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-11-20 11:48:41,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-11-20 11:48:41,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-11-20 11:48:41,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-11-20 11:48:41,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-11-20 11:48:41,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-11-20 11:48:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-11-20 11:48:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-11-20 11:48:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-11-20 11:48:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-11-20 11:48:41,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-11-20 11:48:41,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-11-20 11:48:41,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-11-20 11:48:41,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-11-20 11:48:41,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-11-20 11:48:41,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-11-20 11:48:41,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-11-20 11:48:41,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-11-20 11:48:41,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2022-11-20 11:48:41,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2022-11-20 11:48:41,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2022-11-20 11:48:41,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-11-20 11:48:41,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-11-20 11:48:41,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-11-20 11:48:41,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-11-20 11:48:41,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-11-20 11:48:41,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-11-20 11:48:41,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-11-20 11:48:41,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-11-20 11:48:41,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-11-20 11:48:41,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-11-20 11:48:41,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-11-20 11:48:41,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-11-20 11:48:41,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-11-20 11:48:41,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-11-20 11:48:41,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-11-20 11:48:41,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-11-20 11:48:41,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 11:48:41,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:41,403 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:41,410 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:48:41,410 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:48:41,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:48:41 BasicIcfg [2022-11-20 11:48:41,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:48:41,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:48:41,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:48:41,425 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:48:41,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:59" (3/4) ... [2022-11-20 11:48:41,430 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:48:41,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 11:48:41,438 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 11:48:41,438 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 11:48:41,449 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-11-20 11:48:41,450 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:48:41,450 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:48:41,451 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:48:41,524 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:48:41,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:48:41,525 INFO L158 Benchmark]: Toolchain (without parser) took 103840.08ms. Allocated memory was 142.6MB in the beginning and 9.8GB in the end (delta: 9.6GB). Free memory was 98.7MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-20 11:48:41,526 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:48:41,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.74ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 85.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:48:41,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.33ms. Allocated memory is still 142.6MB. Free memory was 85.9MB in the beginning and 82.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:48:41,527 INFO L158 Benchmark]: Boogie Preprocessor took 49.97ms. Allocated memory is still 142.6MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:48:41,527 INFO L158 Benchmark]: RCFGBuilder took 1543.13ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 80.1MB in the beginning and 117.6MB in the end (delta: -37.5MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-11-20 11:48:41,528 INFO L158 Benchmark]: TraceAbstraction took 101675.79ms. Allocated memory was 199.2MB in the beginning and 9.8GB in the end (delta: 9.6GB). Free memory was 116.4MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-20 11:48:41,528 INFO L158 Benchmark]: Witness Printer took 99.43ms. Allocated memory is still 9.8GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:48:41,531 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.74ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 85.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.33ms. Allocated memory is still 142.6MB. Free memory was 85.9MB in the beginning and 82.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.97ms. Allocated memory is still 142.6MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1543.13ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 80.1MB in the beginning and 117.6MB in the end (delta: -37.5MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * TraceAbstraction took 101675.79ms. Allocated memory was 199.2MB in the beginning and 9.8GB in the end (delta: 9.6GB). Free memory was 116.4MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 99.43ms. Allocated memory is still 9.8GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 99]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 99]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: 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, 327 locations, 41 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: 101.4s, OverallIterations: 18, TraceHistogramMax: 35, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 77.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12383 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12383 mSDsluCounter, 1463 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1198 mSDsCounter, 1522 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6292 IncrementalHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1522 mSolverCounterUnsat, 265 mSDtfsCounter, 6292 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3880 GetRequests, 2995 SyntacticMatches, 15 SemanticMatches, 870 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67407 ImplicationChecksByTransitivity, 32.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5389occurred in iteration=17, InterpolantAutomatonStates: 705, 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: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 4851 NumberOfCodeBlocks, 4383 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 6105 ConstructedInterpolants, 0 QuantifiedInterpolants, 13525 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2802 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 33 InterpolantComputations, 12 PerfectInterpolantSequences, 12060/22882 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 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:48:41,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa588b6f-b4de-4bd6-9f09-d75110452be8/bin/uautomizer-ug76WZFUDN/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