./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/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_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/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_890ea754-384a-4a37-86c5-cbb7f39b54c2/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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- 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 11:54:05,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:54:05,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:54:05,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:54:05,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:54:05,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:54:05,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:54:05,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:54:05,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:54:05,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:54:05,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:54:05,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:54:05,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:54:05,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:54:05,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:54:05,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:54:05,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:54:05,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:54:05,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:54:05,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:54:05,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:54:05,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:54:05,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:54:05,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:54:05,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:54:05,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:54:05,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:54:05,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:54:05,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:54:05,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:54:05,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:54:05,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:54:05,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:54:05,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:54:05,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:54:05,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:54:05,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:54:05,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:54:05,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:54:05,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:54:05,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:54:05,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:54:05,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:54:05,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:54:05,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:54:05,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:54:05,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:54:05,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:54:05,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:54:05,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:54:05,262 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:54:05,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:54:05,264 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:54:05,264 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:54:05,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:54:05,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:54:05,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:54:05,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:54:05,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:54:05,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:54:05,266 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:54:05,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:54:05,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:54:05,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:54:05,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:54:05,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:54:05,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:54:05,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:54:05,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:54:05,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:54:05,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:54:05,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:54:05,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:54:05,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:54:05,271 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:54:05,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:54:05,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:54:05,272 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_890ea754-384a-4a37-86c5-cbb7f39b54c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2022-11-20 11:54:05,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:54:05,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:54:05,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:54:05,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:54:05,641 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:54:05,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-20 11:54:09,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:54:09,729 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:54:09,730 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-20 11:54:09,751 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/data/9057d065c/1595177cd34a46c38a522c9cd9737873/FLAGc47966095 [2022-11-20 11:54:09,782 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/data/9057d065c/1595177cd34a46c38a522c9cd9737873 [2022-11-20 11:54:09,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:54:09,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:54:09,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:54:09,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:54:09,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:54:09,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:09" (1/1) ... [2022-11-20 11:54:09,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf5b545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:09, skipping insertion in model container [2022-11-20 11:54:09,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:09" (1/1) ... [2022-11-20 11:54:09,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:54:09,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:54:10,424 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_890ea754-384a-4a37-86c5-cbb7f39b54c2/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-20 11:54:10,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:54:10,481 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:54:10,538 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_890ea754-384a-4a37-86c5-cbb7f39b54c2/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-20 11:54:10,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:54:10,651 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:54:10,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10 WrapperNode [2022-11-20 11:54:10,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:54:10,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:54:10,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:54:10,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:54:10,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,727 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 200 [2022-11-20 11:54:10,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:54:10,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:54:10,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:54:10,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:54:10,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,779 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:54:10,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:54:10,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:54:10,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:54:10,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (1/1) ... [2022-11-20 11:54:10,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:54:10,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:10,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:54:10,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:54:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:54:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:54:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:54:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:54:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:54:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:54:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 11:54:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 11:54:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:54:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:54:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:54:10,901 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 11:54:11,083 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:54:11,085 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:54:11,530 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:54:11,541 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:54:11,542 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-20 11:54:11,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:11 BoogieIcfgContainer [2022-11-20 11:54:11,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:54:11,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:54:11,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:54:11,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:54:11,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:54:09" (1/3) ... [2022-11-20 11:54:11,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4419b550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:11, skipping insertion in model container [2022-11-20 11:54:11,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:10" (2/3) ... [2022-11-20 11:54:11,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4419b550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:11, skipping insertion in model container [2022-11-20 11:54:11,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:11" (3/3) ... [2022-11-20 11:54:11,556 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2022-11-20 11:54:11,570 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:54:11,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:54:11,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-20 11:54:11,586 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:54:11,711 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 11:54:11,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2022-11-20 11:54:12,065 INFO L130 PetriNetUnfolder]: 45/302 cut-off events. [2022-11-20 11:54:12,067 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-20 11:54:12,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 302 events. 45/302 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1036 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2022-11-20 11:54:12,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2022-11-20 11:54:12,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 448 flow [2022-11-20 11:54:12,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:54:12,116 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;@64d9a1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:54:12,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-20 11:54:12,126 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-20 11:54:12,126 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:54:12,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:12,128 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] [2022-11-20 11:54:12,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:54:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1360391615, now seen corresponding path program 1 times [2022-11-20 11:54:12,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:12,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295274759] [2022-11-20 11:54:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:12,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,645 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 11:54:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:12,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295274759] [2022-11-20 11:54:12,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295274759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:12,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:12,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:12,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076459799] [2022-11-20 11:54:12,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:12,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:12,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:12,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-20 11:54:12,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 220 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 11:54:12,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:12,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-20 11:54:12,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:12,998 INFO L130 PetriNetUnfolder]: 4/263 cut-off events. [2022-11-20 11:54:12,998 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-20 11:54:13,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 263 events. 4/263 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 785 event pairs, 0 based on Foata normal form. 39/272 useless extension candidates. Maximal degree in co-relation 140. Up to 15 conditions per place. [2022-11-20 11:54:13,008 INFO L137 encePairwiseOnDemand]: 189/223 looper letters, 17 selfloop transitions, 4 changer transitions 1/198 dead transitions. [2022-11-20 11:54:13,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 198 transitions, 446 flow [2022-11-20 11:54:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 952 transitions. [2022-11-20 11:54:13,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8538116591928251 [2022-11-20 11:54:13,037 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 952 transitions. [2022-11-20 11:54:13,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 952 transitions. [2022-11-20 11:54:13,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:13,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 952 transitions. [2022-11-20 11:54:13,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.4) internal successors, (952), 5 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 11:54:13,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states 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 11:54:13,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states 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 11:54:13,063 INFO L175 Difference]: Start difference. First operand has 193 places, 220 transitions, 448 flow. Second operand 5 states and 952 transitions. [2022-11-20 11:54:13,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 198 transitions, 446 flow [2022-11-20 11:54:13,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 198 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:54:13,075 INFO L231 Difference]: Finished difference. Result has 198 places, 193 transitions, 420 flow [2022-11-20 11:54:13,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=198, PETRI_TRANSITIONS=193} [2022-11-20 11:54:13,082 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 5 predicate places. [2022-11-20 11:54:13,083 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 193 transitions, 420 flow [2022-11-20 11:54:13,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 11:54:13,084 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:13,085 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:54:13,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:54:13,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:54:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:13,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1476833369, now seen corresponding path program 1 times [2022-11-20 11:54:13,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:13,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352294275] [2022-11-20 11:54:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:13,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:54:13,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:13,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352294275] [2022-11-20 11:54:13,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352294275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:13,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:13,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:13,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814648228] [2022-11-20 11:54:13,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:13,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:13,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:13,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-20 11:54:13,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 193 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 11:54:13,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:13,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-20 11:54:13,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:13,351 INFO L130 PetriNetUnfolder]: 4/261 cut-off events. [2022-11-20 11:54:13,352 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-20 11:54:13,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 261 events. 4/261 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 782 event pairs, 0 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 251. Up to 7 conditions per place. [2022-11-20 11:54:13,354 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 9 selfloop transitions, 8 changer transitions 0/193 dead transitions. [2022-11-20 11:54:13,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 193 transitions, 452 flow [2022-11-20 11:54:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 915 transitions. [2022-11-20 11:54:13,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820627802690583 [2022-11-20 11:54:13,359 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 915 transitions. [2022-11-20 11:54:13,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 915 transitions. [2022-11-20 11:54:13,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:13,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 915 transitions. [2022-11-20 11:54:13,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states 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 11:54:13,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states 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 11:54:13,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states 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 11:54:13,370 INFO L175 Difference]: Start difference. First operand has 198 places, 193 transitions, 420 flow. Second operand 5 states and 915 transitions. [2022-11-20 11:54:13,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 193 transitions, 452 flow [2022-11-20 11:54:13,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 193 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:54:13,377 INFO L231 Difference]: Finished difference. Result has 200 places, 193 transitions, 438 flow [2022-11-20 11:54:13,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=200, PETRI_TRANSITIONS=193} [2022-11-20 11:54:13,379 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 7 predicate places. [2022-11-20 11:54:13,379 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 193 transitions, 438 flow [2022-11-20 11:54:13,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 11:54:13,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:13,381 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:54:13,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:54:13,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:54:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1462806350, now seen corresponding path program 1 times [2022-11-20 11:54:13,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:13,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925172599] [2022-11-20 11:54:13,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:13,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:13,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:13,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925172599] [2022-11-20 11:54:13,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925172599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:13,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361487939] [2022-11-20 11:54:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:13,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:13,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:13,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:13,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:54:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:13,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:13,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:13,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:13,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361487939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:13,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:54:13,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 11:54:13,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517878472] [2022-11-20 11:54:13,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:13,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:54:13,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:54:13,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:54:13,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-20 11:54:13,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 193 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 11:54:13,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:13,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-20 11:54:13,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:13,985 INFO L130 PetriNetUnfolder]: 4/260 cut-off events. [2022-11-20 11:54:13,985 INFO L131 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2022-11-20 11:54:13,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 260 events. 4/260 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 775 event pairs, 0 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 249. Up to 10 conditions per place. [2022-11-20 11:54:13,988 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 11 selfloop transitions, 5 changer transitions 0/192 dead transitions. [2022-11-20 11:54:13,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 192 transitions, 466 flow [2022-11-20 11:54:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:54:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:54:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 733 transitions. [2022-11-20 11:54:13,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8217488789237668 [2022-11-20 11:54:13,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 733 transitions. [2022-11-20 11:54:13,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 733 transitions. [2022-11-20 11:54:13,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:13,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 733 transitions. [2022-11-20 11:54:13,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 11:54:13,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states 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 11:54:14,001 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states 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 11:54:14,001 INFO L175 Difference]: Start difference. First operand has 200 places, 193 transitions, 438 flow. Second operand 4 states and 733 transitions. [2022-11-20 11:54:14,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 192 transitions, 466 flow [2022-11-20 11:54:14,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 192 transitions, 454 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:14,008 INFO L231 Difference]: Finished difference. Result has 199 places, 192 transitions, 432 flow [2022-11-20 11:54:14,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=199, PETRI_TRANSITIONS=192} [2022-11-20 11:54:14,010 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 6 predicate places. [2022-11-20 11:54:14,010 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 192 transitions, 432 flow [2022-11-20 11:54:14,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 11:54:14,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:14,012 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:14,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:54:14,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:14,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:54:14,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash 787860712, now seen corresponding path program 1 times [2022-11-20 11:54:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:14,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587239746] [2022-11-20 11:54:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:14,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587239746] [2022-11-20 11:54:14,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587239746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217676333] [2022-11-20 11:54:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:14,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:14,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:14,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:14,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:54:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:14,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:14,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:14,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:14,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217676333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:14,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:14,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:54:14,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172935597] [2022-11-20 11:54:14,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:14,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:54:14,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:14,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:54:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:54:14,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-20 11:54:14,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 192 transitions, 432 flow. Second operand has 10 states, 10 states have (on average 182.7) internal successors, (1827), 10 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states 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 11:54:14,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:14,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-20 11:54:14,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:14,890 INFO L130 PetriNetUnfolder]: 4/268 cut-off events. [2022-11-20 11:54:14,890 INFO L131 PetriNetUnfolder]: For 21/22 co-relation queries the response was YES. [2022-11-20 11:54:14,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 268 events. 4/268 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 765 event pairs, 0 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 239. Up to 7 conditions per place. [2022-11-20 11:54:14,893 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 18 selfloop transitions, 9 changer transitions 0/203 dead transitions. [2022-11-20 11:54:14,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 203 transitions, 524 flow [2022-11-20 11:54:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:54:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:54:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1649 transitions. [2022-11-20 11:54:14,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216243148978575 [2022-11-20 11:54:14,899 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1649 transitions. [2022-11-20 11:54:14,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1649 transitions. [2022-11-20 11:54:14,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:14,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1649 transitions. [2022-11-20 11:54:14,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.22222222222223) internal successors, (1649), 9 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states 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 11:54:14,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states 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 11:54:14,940 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states 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 11:54:14,940 INFO L175 Difference]: Start difference. First operand has 199 places, 192 transitions, 432 flow. Second operand 9 states and 1649 transitions. [2022-11-20 11:54:14,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 203 transitions, 524 flow [2022-11-20 11:54:14,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 203 transitions, 510 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:14,947 INFO L231 Difference]: Finished difference. Result has 208 places, 196 transitions, 478 flow [2022-11-20 11:54:14,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=208, PETRI_TRANSITIONS=196} [2022-11-20 11:54:14,948 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 15 predicate places. [2022-11-20 11:54:14,949 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 196 transitions, 478 flow [2022-11-20 11:54:14,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 182.7) internal successors, (1827), 10 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states 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 11:54:14,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:14,950 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:14,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:15,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:54:15,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1075793448, now seen corresponding path program 2 times [2022-11-20 11:54:15,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:15,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783858588] [2022-11-20 11:54:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:15,353 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 11:54:15,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:15,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783858588] [2022-11-20 11:54:15,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783858588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:15,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:15,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:15,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184692619] [2022-11-20 11:54:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:15,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:15,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:15,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-20 11:54:15,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 196 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 11:54:15,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:15,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-20 11:54:15,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:15,460 INFO L130 PetriNetUnfolder]: 3/205 cut-off events. [2022-11-20 11:54:15,461 INFO L131 PetriNetUnfolder]: For 31/40 co-relation queries the response was YES. [2022-11-20 11:54:15,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 205 events. 3/205 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 390 event pairs, 0 based on Foata normal form. 3/192 useless extension candidates. Maximal degree in co-relation 188. Up to 7 conditions per place. [2022-11-20 11:54:15,464 INFO L137 encePairwiseOnDemand]: 216/223 looper letters, 10 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-20 11:54:15,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 196 transitions, 506 flow [2022-11-20 11:54:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 917 transitions. [2022-11-20 11:54:15,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224215246636771 [2022-11-20 11:54:15,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 917 transitions. [2022-11-20 11:54:15,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 917 transitions. [2022-11-20 11:54:15,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:15,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 917 transitions. [2022-11-20 11:54:15,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 11:54:15,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states 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 11:54:15,480 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states 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 11:54:15,481 INFO L175 Difference]: Start difference. First operand has 208 places, 196 transitions, 478 flow. Second operand 5 states and 917 transitions. [2022-11-20 11:54:15,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 196 transitions, 506 flow [2022-11-20 11:54:15,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 196 transitions, 490 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-20 11:54:15,490 INFO L231 Difference]: Finished difference. Result has 207 places, 194 transitions, 470 flow [2022-11-20 11:54:15,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2022-11-20 11:54:15,494 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 14 predicate places. [2022-11-20 11:54:15,495 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 470 flow [2022-11-20 11:54:15,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 11:54:15,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:15,496 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:54:15,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:54:15,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:54:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1882754179, now seen corresponding path program 1 times [2022-11-20 11:54:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:15,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708004507] [2022-11-20 11:54:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:54:15,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:15,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708004507] [2022-11-20 11:54:15,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708004507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:15,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810569598] [2022-11-20 11:54:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:15,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:15,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:15,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:15,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:54:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:15,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:54:15,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:54:16,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:54:16,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810569598] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:16,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:16,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:54:16,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316307546] [2022-11-20 11:54:16,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:16,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:54:16,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:16,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:54:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:54:16,275 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-20 11:54:16,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 470 flow. Second operand has 18 states, 18 states have (on average 183.05555555555554) internal successors, (3295), 18 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 11:54:16,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:16,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-20 11:54:16,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:16,687 INFO L130 PetriNetUnfolder]: 3/233 cut-off events. [2022-11-20 11:54:16,687 INFO L131 PetriNetUnfolder]: For 58/59 co-relation queries the response was YES. [2022-11-20 11:54:16,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 233 events. 3/233 cut-off events. For 58/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 398 event pairs, 0 based on Foata normal form. 4/222 useless extension candidates. Maximal degree in co-relation 216. Up to 9 conditions per place. [2022-11-20 11:54:16,689 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 34 selfloop transitions, 21 changer transitions 0/229 dead transitions. [2022-11-20 11:54:16,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 229 transitions, 734 flow [2022-11-20 11:54:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:54:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:54:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3839 transitions. [2022-11-20 11:54:16,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197736493700619 [2022-11-20 11:54:16,705 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3839 transitions. [2022-11-20 11:54:16,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3839 transitions. [2022-11-20 11:54:16,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:16,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3839 transitions. [2022-11-20 11:54:16,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 182.8095238095238) internal successors, (3839), 21 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states 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 11:54:16,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 223.0) internal successors, (4906), 22 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states 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 11:54:16,737 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 223.0) internal successors, (4906), 22 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states 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 11:54:16,737 INFO L175 Difference]: Start difference. First operand has 207 places, 194 transitions, 470 flow. Second operand 21 states and 3839 transitions. [2022-11-20 11:54:16,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 229 transitions, 734 flow [2022-11-20 11:54:16,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 726 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:54:16,749 INFO L231 Difference]: Finished difference. Result has 228 places, 207 transitions, 618 flow [2022-11-20 11:54:16,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=618, PETRI_PLACES=228, PETRI_TRANSITIONS=207} [2022-11-20 11:54:16,753 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 35 predicate places. [2022-11-20 11:54:16,753 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 207 transitions, 618 flow [2022-11-20 11:54:16,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 183.05555555555554) internal successors, (3295), 18 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 11:54:16,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:16,756 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 11:54:16,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:16,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:54:16,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:54:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1015841021, now seen corresponding path program 2 times [2022-11-20 11:54:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:16,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927509528] [2022-11-20 11:54:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:54:17,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:17,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927509528] [2022-11-20 11:54:17,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927509528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:17,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404776395] [2022-11-20 11:54:17,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:54:17,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:17,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:17,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:17,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:54:17,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:54:17,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:17,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:54:17,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:54:17,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:54:18,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404776395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:18,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:18,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:54:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157449911] [2022-11-20 11:54:18,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:18,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:54:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:54:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:54:18,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-20 11:54:18,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 207 transitions, 618 flow. Second operand has 23 states, 23 states have (on average 183.30434782608697) internal successors, (4216), 23 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states 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 11:54:18,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:18,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-20 11:54:18,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:18,769 INFO L130 PetriNetUnfolder]: 3/254 cut-off events. [2022-11-20 11:54:18,769 INFO L131 PetriNetUnfolder]: For 225/226 co-relation queries the response was YES. [2022-11-20 11:54:18,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 254 events. 3/254 cut-off events. For 225/226 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 398 event pairs, 0 based on Foata normal form. 3/242 useless extension candidates. Maximal degree in co-relation 342. Up to 12 conditions per place. [2022-11-20 11:54:18,771 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 46 selfloop transitions, 30 changer transitions 0/250 dead transitions. [2022-11-20 11:54:18,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 250 transitions, 980 flow [2022-11-20 11:54:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:54:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:54:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5479 transitions. [2022-11-20 11:54:18,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81898355754858 [2022-11-20 11:54:18,785 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5479 transitions. [2022-11-20 11:54:18,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5479 transitions. [2022-11-20 11:54:18,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:18,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5479 transitions. [2022-11-20 11:54:18,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 182.63333333333333) internal successors, (5479), 30 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states 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 11:54:18,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 223.0) internal successors, (6913), 31 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states 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 11:54:18,822 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 223.0) internal successors, (6913), 31 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states 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 11:54:18,823 INFO L175 Difference]: Start difference. First operand has 228 places, 207 transitions, 618 flow. Second operand 30 states and 5479 transitions. [2022-11-20 11:54:18,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 250 transitions, 980 flow [2022-11-20 11:54:18,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 250 transitions, 900 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-20 11:54:18,832 INFO L231 Difference]: Finished difference. Result has 253 places, 217 transitions, 716 flow [2022-11-20 11:54:18,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=716, PETRI_PLACES=253, PETRI_TRANSITIONS=217} [2022-11-20 11:54:18,833 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 60 predicate places. [2022-11-20 11:54:18,833 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 217 transitions, 716 flow [2022-11-20 11:54:18,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 183.30434782608697) internal successors, (4216), 23 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states 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 11:54:18,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:18,836 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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] [2022-11-20 11:54:18,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:19,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:19,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-20 11:54:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1942295639, now seen corresponding path program 3 times [2022-11-20 11:54:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:19,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040461171] [2022-11-20 11:54:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:19,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:54:19,085 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:54:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:54:19,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:54:19,155 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:54:19,157 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-20 11:54:19,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-20 11:54:19,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-20 11:54:19,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-20 11:54:19,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-20 11:54:19,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-20 11:54:19,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-20 11:54:19,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-20 11:54:19,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-20 11:54:19,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-20 11:54:19,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-20 11:54:19,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-20 11:54:19,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-20 11:54:19,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-20 11:54:19,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-20 11:54:19,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-20 11:54:19,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-20 11:54:19,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-20 11:54:19,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-20 11:54:19,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:54:19,175 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2022-11-20 11:54:19,178 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:54:19,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:54:19,238 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:54:19,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 302 transitions, 622 flow [2022-11-20 11:54:19,361 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2022-11-20 11:54:19,361 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-20 11:54:19,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2066 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-20 11:54:19,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 302 transitions, 622 flow [2022-11-20 11:54:19,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 302 transitions, 622 flow [2022-11-20 11:54:19,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:54:19,374 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;@64d9a1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:54:19,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-20 11:54:19,377 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-20 11:54:19,378 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:54:19,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:19,378 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] [2022-11-20 11:54:19,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:19,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2088214703, now seen corresponding path program 1 times [2022-11-20 11:54:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:19,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618177022] [2022-11-20 11:54:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:19,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:19,425 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 11:54:19,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:19,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618177022] [2022-11-20 11:54:19,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618177022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:19,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:19,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:19,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497950911] [2022-11-20 11:54:19,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:19,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:19,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:19,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:19,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 302 transitions, 622 flow. Second operand has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 11:54:19,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:19,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:19,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:19,580 INFO L130 PetriNetUnfolder]: 9/433 cut-off events. [2022-11-20 11:54:19,580 INFO L131 PetriNetUnfolder]: For 19/23 co-relation queries the response was YES. [2022-11-20 11:54:19,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 433 events. 9/433 cut-off events. For 19/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1710 event pairs, 0 based on Foata normal form. 90/470 useless extension candidates. Maximal degree in co-relation 289. Up to 19 conditions per place. [2022-11-20 11:54:19,587 INFO L137 encePairwiseOnDemand]: 256/302 looper letters, 19 selfloop transitions, 4 changer transitions 1/267 dead transitions. [2022-11-20 11:54:19,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 267 transitions, 598 flow [2022-11-20 11:54:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1286 transitions. [2022-11-20 11:54:19,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8516556291390729 [2022-11-20 11:54:19,592 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1286 transitions. [2022-11-20 11:54:19,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1286 transitions. [2022-11-20 11:54:19,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:19,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1286 transitions. [2022-11-20 11:54:19,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.2) internal successors, (1286), 5 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states 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 11:54:19,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 11:54:19,601 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 11:54:19,602 INFO L175 Difference]: Start difference. First operand has 262 places, 302 transitions, 622 flow. Second operand 5 states and 1286 transitions. [2022-11-20 11:54:19,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 267 transitions, 598 flow [2022-11-20 11:54:19,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 267 transitions, 598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:54:19,608 INFO L231 Difference]: Finished difference. Result has 266 places, 262 transitions, 568 flow [2022-11-20 11:54:19,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=266, PETRI_TRANSITIONS=262} [2022-11-20 11:54:19,610 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 4 predicate places. [2022-11-20 11:54:19,610 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 262 transitions, 568 flow [2022-11-20 11:54:19,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 11:54:19,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:19,611 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:54:19,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:54:19,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash -141536921, now seen corresponding path program 1 times [2022-11-20 11:54:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:19,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310546586] [2022-11-20 11:54:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:19,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:54:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:19,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310546586] [2022-11-20 11:54:19,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310546586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:19,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:19,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:19,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074081206] [2022-11-20 11:54:19,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:19,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:19,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:19,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:19,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 262 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states 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 11:54:19,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:19,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:19,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:19,797 INFO L130 PetriNetUnfolder]: 9/431 cut-off events. [2022-11-20 11:54:19,797 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-20 11:54:19,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 431 events. 9/431 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1719 event pairs, 0 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 432. Up to 11 conditions per place. [2022-11-20 11:54:19,803 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 11 selfloop transitions, 8 changer transitions 0/262 dead transitions. [2022-11-20 11:54:19,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 262 transitions, 604 flow [2022-11-20 11:54:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2022-11-20 11:54:19,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819205298013245 [2022-11-20 11:54:19,808 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2022-11-20 11:54:19,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2022-11-20 11:54:19,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:19,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2022-11-20 11:54:19,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states 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 11:54:19,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 11:54:19,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 11:54:19,818 INFO L175 Difference]: Start difference. First operand has 266 places, 262 transitions, 568 flow. Second operand 5 states and 1237 transitions. [2022-11-20 11:54:19,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 262 transitions, 604 flow [2022-11-20 11:54:19,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 262 transitions, 602 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:54:19,825 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 586 flow [2022-11-20 11:54:19,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2022-11-20 11:54:19,826 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 6 predicate places. [2022-11-20 11:54:19,826 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 586 flow [2022-11-20 11:54:19,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states 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 11:54:19,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:19,828 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:54:19,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:54:19,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:19,829 INFO L85 PathProgramCache]: Analyzing trace with hash -92676420, now seen corresponding path program 1 times [2022-11-20 11:54:19,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:19,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461455511] [2022-11-20 11:54:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:19,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:19,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:19,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461455511] [2022-11-20 11:54:19,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461455511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:19,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372602000] [2022-11-20 11:54:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:19,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:19,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:19,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:19,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:54:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:20,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:20,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:20,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:20,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372602000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:20,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:54:20,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 11:54:20,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524014949] [2022-11-20 11:54:20,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:20,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:54:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:20,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:54:20,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:54:20,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:20,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 586 flow. Second operand has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 11:54:20,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:20,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:20,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:20,247 INFO L130 PetriNetUnfolder]: 9/430 cut-off events. [2022-11-20 11:54:20,248 INFO L131 PetriNetUnfolder]: For 29/33 co-relation queries the response was YES. [2022-11-20 11:54:20,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 430 events. 9/430 cut-off events. For 29/33 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1702 event pairs, 0 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 430. Up to 14 conditions per place. [2022-11-20 11:54:20,254 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 13 selfloop transitions, 5 changer transitions 0/261 dead transitions. [2022-11-20 11:54:20,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 261 transitions, 618 flow [2022-11-20 11:54:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:54:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:54:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 991 transitions. [2022-11-20 11:54:20,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820364238410596 [2022-11-20 11:54:20,258 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 991 transitions. [2022-11-20 11:54:20,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 991 transitions. [2022-11-20 11:54:20,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:20,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 991 transitions. [2022-11-20 11:54:20,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 11:54:20,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states 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 11:54:20,266 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states 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 11:54:20,266 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 586 flow. Second operand 4 states and 991 transitions. [2022-11-20 11:54:20,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 261 transitions, 618 flow [2022-11-20 11:54:20,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 261 transitions, 606 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:20,273 INFO L231 Difference]: Finished difference. Result has 267 places, 261 transitions, 580 flow [2022-11-20 11:54:20,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=267, PETRI_TRANSITIONS=261} [2022-11-20 11:54:20,275 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 5 predicate places. [2022-11-20 11:54:20,275 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 261 transitions, 580 flow [2022-11-20 11:54:20,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 11:54:20,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:20,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:20,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:20,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:54:20,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:20,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:20,485 INFO L85 PathProgramCache]: Analyzing trace with hash 298346531, now seen corresponding path program 1 times [2022-11-20 11:54:20,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:20,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706599589] [2022-11-20 11:54:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:20,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:20,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:20,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706599589] [2022-11-20 11:54:20,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706599589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:20,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505274449] [2022-11-20 11:54:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:20,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:20,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:20,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:20,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:54:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:20,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:20,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:20,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:20,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505274449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:20,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:20,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:54:20,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527401996] [2022-11-20 11:54:20,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:20,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:54:20,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:20,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:54:20,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:54:20,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:20,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 261 transitions, 580 flow. Second operand has 10 states, 10 states have (on average 246.7) internal successors, (2467), 10 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states 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 11:54:20,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:20,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:20,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:20,975 INFO L130 PetriNetUnfolder]: 9/438 cut-off events. [2022-11-20 11:54:20,975 INFO L131 PetriNetUnfolder]: For 35/39 co-relation queries the response was YES. [2022-11-20 11:54:20,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 438 events. 9/438 cut-off events. For 35/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1697 event pairs, 0 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 420. Up to 11 conditions per place. [2022-11-20 11:54:20,983 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 20 selfloop transitions, 9 changer transitions 0/272 dead transitions. [2022-11-20 11:54:20,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 272 transitions, 676 flow [2022-11-20 11:54:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:54:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:54:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2227 transitions. [2022-11-20 11:54:20,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8193524650478293 [2022-11-20 11:54:20,990 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2227 transitions. [2022-11-20 11:54:20,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2227 transitions. [2022-11-20 11:54:20,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:20,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2227 transitions. [2022-11-20 11:54:21,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 247.44444444444446) internal successors, (2227), 9 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states 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 11:54:21,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states 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 11:54:21,009 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states 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 11:54:21,009 INFO L175 Difference]: Start difference. First operand has 267 places, 261 transitions, 580 flow. Second operand 9 states and 2227 transitions. [2022-11-20 11:54:21,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 272 transitions, 676 flow [2022-11-20 11:54:21,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 272 transitions, 662 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:21,017 INFO L231 Difference]: Finished difference. Result has 276 places, 265 transitions, 626 flow [2022-11-20 11:54:21,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=626, PETRI_PLACES=276, PETRI_TRANSITIONS=265} [2022-11-20 11:54:21,019 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 14 predicate places. [2022-11-20 11:54:21,019 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 265 transitions, 626 flow [2022-11-20 11:54:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.7) internal successors, (2467), 10 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states 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 11:54:21,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:21,021 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:21,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:21,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:54:21,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:21,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash 755476771, now seen corresponding path program 2 times [2022-11-20 11:54:21,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:21,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439031180] [2022-11-20 11:54:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:21,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:21,304 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 11:54:21,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:21,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439031180] [2022-11-20 11:54:21,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439031180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:21,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:21,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:21,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580333368] [2022-11-20 11:54:21,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:21,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:21,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:21,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:21,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:21,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:21,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 265 transitions, 626 flow. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 11:54:21,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:21,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:21,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:21,475 INFO L130 PetriNetUnfolder]: 7/384 cut-off events. [2022-11-20 11:54:21,475 INFO L131 PetriNetUnfolder]: For 53/95 co-relation queries the response was YES. [2022-11-20 11:54:21,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 384 events. 7/384 cut-off events. For 53/95 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1322 event pairs, 0 based on Foata normal form. 3/347 useless extension candidates. Maximal degree in co-relation 388. Up to 21 conditions per place. [2022-11-20 11:54:21,481 INFO L137 encePairwiseOnDemand]: 295/302 looper letters, 19 selfloop transitions, 4 changer transitions 0/272 dead transitions. [2022-11-20 11:54:21,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 272 transitions, 686 flow [2022-11-20 11:54:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1246 transitions. [2022-11-20 11:54:21,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8251655629139073 [2022-11-20 11:54:21,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1246 transitions. [2022-11-20 11:54:21,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1246 transitions. [2022-11-20 11:54:21,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:21,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1246 transitions. [2022-11-20 11:54:21,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.2) internal successors, (1246), 5 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 11:54:21,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 11:54:21,497 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 11:54:21,497 INFO L175 Difference]: Start difference. First operand has 276 places, 265 transitions, 626 flow. Second operand 5 states and 1246 transitions. [2022-11-20 11:54:21,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 272 transitions, 686 flow [2022-11-20 11:54:21,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 272 transitions, 670 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-20 11:54:21,505 INFO L231 Difference]: Finished difference. Result has 279 places, 268 transitions, 642 flow [2022-11-20 11:54:21,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=279, PETRI_TRANSITIONS=268} [2022-11-20 11:54:21,506 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 17 predicate places. [2022-11-20 11:54:21,506 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 268 transitions, 642 flow [2022-11-20 11:54:21,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 11:54:21,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:21,507 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-20 11:54:21,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:54:21,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:21,508 INFO L85 PathProgramCache]: Analyzing trace with hash -373826418, now seen corresponding path program 1 times [2022-11-20 11:54:21,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:21,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958267386] [2022-11-20 11:54:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:21,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 11:54:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:21,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958267386] [2022-11-20 11:54:21,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958267386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:21,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:21,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:21,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822986337] [2022-11-20 11:54:21,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:21,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:21,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:21,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:21,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 268 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 11:54:21,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:21,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:21,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:21,728 INFO L130 PetriNetUnfolder]: 7/383 cut-off events. [2022-11-20 11:54:21,728 INFO L131 PetriNetUnfolder]: For 48/87 co-relation queries the response was YES. [2022-11-20 11:54:21,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 383 events. 7/383 cut-off events. For 48/87 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1319 event pairs, 0 based on Foata normal form. 7/354 useless extension candidates. Maximal degree in co-relation 395. Up to 10 conditions per place. [2022-11-20 11:54:21,734 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 11 selfloop transitions, 8 changer transitions 0/268 dead transitions. [2022-11-20 11:54:21,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 268 transitions, 678 flow [2022-11-20 11:54:21,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2022-11-20 11:54:21,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819205298013245 [2022-11-20 11:54:21,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2022-11-20 11:54:21,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2022-11-20 11:54:21,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:21,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2022-11-20 11:54:21,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states 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 11:54:21,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 11:54:21,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 11:54:21,747 INFO L175 Difference]: Start difference. First operand has 279 places, 268 transitions, 642 flow. Second operand 5 states and 1237 transitions. [2022-11-20 11:54:21,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 268 transitions, 678 flow [2022-11-20 11:54:21,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 268 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:54:21,754 INFO L231 Difference]: Finished difference. Result has 282 places, 268 transitions, 660 flow [2022-11-20 11:54:21,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=660, PETRI_PLACES=282, PETRI_TRANSITIONS=268} [2022-11-20 11:54:21,757 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 20 predicate places. [2022-11-20 11:54:21,757 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 268 transitions, 660 flow [2022-11-20 11:54:21,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 11:54:21,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:21,758 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-11-20 11:54:21,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:54:21,758 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:21,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1296283695, now seen corresponding path program 1 times [2022-11-20 11:54:21,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:21,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850390678] [2022-11-20 11:54:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:21,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:21,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:21,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850390678] [2022-11-20 11:54:21,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850390678] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:21,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257242202] [2022-11-20 11:54:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:21,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:21,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:21,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:21,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:54:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:22,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:54:22,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:22,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:22,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257242202] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:22,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:22,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:54:22,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319900025] [2022-11-20 11:54:22,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:22,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:54:22,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:22,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:54:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:54:22,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:22,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 268 transitions, 660 flow. Second operand has 18 states, 18 states have (on average 247.11111111111111) internal successors, (4448), 18 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states 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 11:54:22,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:22,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:22,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:22,789 INFO L130 PetriNetUnfolder]: 7/411 cut-off events. [2022-11-20 11:54:22,789 INFO L131 PetriNetUnfolder]: For 81/85 co-relation queries the response was YES. [2022-11-20 11:54:22,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 411 events. 7/411 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1314 event pairs, 0 based on Foata normal form. 4/379 useless extension candidates. Maximal degree in co-relation 390. Up to 11 conditions per place. [2022-11-20 11:54:22,795 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 36 selfloop transitions, 21 changer transitions 0/303 dead transitions. [2022-11-20 11:54:22,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 303 transitions, 928 flow [2022-11-20 11:54:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:54:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:54:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5185 transitions. [2022-11-20 11:54:22,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8175654367707348 [2022-11-20 11:54:22,808 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5185 transitions. [2022-11-20 11:54:22,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5185 transitions. [2022-11-20 11:54:22,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:22,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5185 transitions. [2022-11-20 11:54:22,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 246.9047619047619) internal successors, (5185), 21 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states 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 11:54:22,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 302.0) internal successors, (6644), 22 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states 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 11:54:22,850 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 302.0) internal successors, (6644), 22 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states 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 11:54:22,850 INFO L175 Difference]: Start difference. First operand has 282 places, 268 transitions, 660 flow. Second operand 21 states and 5185 transitions. [2022-11-20 11:54:22,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 303 transitions, 928 flow [2022-11-20 11:54:22,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 303 transitions, 916 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:22,860 INFO L231 Difference]: Finished difference. Result has 304 places, 281 transitions, 804 flow [2022-11-20 11:54:22,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=804, PETRI_PLACES=304, PETRI_TRANSITIONS=281} [2022-11-20 11:54:22,863 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 42 predicate places. [2022-11-20 11:54:22,863 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 281 transitions, 804 flow [2022-11-20 11:54:22,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.11111111111111) internal successors, (4448), 18 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states 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 11:54:22,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:22,866 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 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] [2022-11-20 11:54:22,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:23,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:23,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:23,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1067562543, now seen corresponding path program 2 times [2022-11-20 11:54:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:23,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665856715] [2022-11-20 11:54:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:23,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:23,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665856715] [2022-11-20 11:54:23,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665856715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:23,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417133549] [2022-11-20 11:54:23,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:54:23,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:23,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:23,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:23,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:54:23,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:54:23,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:23,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:54:23,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:23,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:24,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417133549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:24,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:24,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:54:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682120231] [2022-11-20 11:54:24,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:54:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:24,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:54:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:54:24,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:24,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 281 transitions, 804 flow. Second operand has 23 states, 23 states have (on average 247.34782608695653) internal successors, (5689), 23 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states 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 11:54:24,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:24,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:24,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:24,726 INFO L130 PetriNetUnfolder]: 7/432 cut-off events. [2022-11-20 11:54:24,726 INFO L131 PetriNetUnfolder]: For 243/247 co-relation queries the response was YES. [2022-11-20 11:54:24,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 432 events. 7/432 cut-off events. For 243/247 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1316 event pairs, 0 based on Foata normal form. 3/399 useless extension candidates. Maximal degree in co-relation 513. Up to 12 conditions per place. [2022-11-20 11:54:24,733 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 48 selfloop transitions, 30 changer transitions 0/324 dead transitions. [2022-11-20 11:54:24,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 324 transitions, 1170 flow [2022-11-20 11:54:24,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:54:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:54:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7401 transitions. [2022-11-20 11:54:24,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8168874172185431 [2022-11-20 11:54:24,750 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7401 transitions. [2022-11-20 11:54:24,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7401 transitions. [2022-11-20 11:54:24,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:24,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7401 transitions. [2022-11-20 11:54:24,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 246.7) internal successors, (7401), 30 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states 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 11:54:24,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 302.0) internal successors, (9362), 31 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states 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 11:54:24,785 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 302.0) internal successors, (9362), 31 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states 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 11:54:24,786 INFO L175 Difference]: Start difference. First operand has 304 places, 281 transitions, 804 flow. Second operand 30 states and 7401 transitions. [2022-11-20 11:54:24,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 324 transitions, 1170 flow [2022-11-20 11:54:24,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 324 transitions, 1090 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-20 11:54:24,796 INFO L231 Difference]: Finished difference. Result has 329 places, 291 transitions, 902 flow [2022-11-20 11:54:24,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=902, PETRI_PLACES=329, PETRI_TRANSITIONS=291} [2022-11-20 11:54:24,798 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 67 predicate places. [2022-11-20 11:54:24,798 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 291 transitions, 902 flow [2022-11-20 11:54:24,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 247.34782608695653) internal successors, (5689), 23 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states 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 11:54:24,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:24,801 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 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] [2022-11-20 11:54:24,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:25,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:54:25,009 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1508393097, now seen corresponding path program 3 times [2022-11-20 11:54:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:25,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026225836] [2022-11-20 11:54:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:25,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:25,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:25,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026225836] [2022-11-20 11:54:25,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026225836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:25,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832423893] [2022-11-20 11:54:25,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:54:25,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:25,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:25,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:25,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:54:25,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:54:25,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:25,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:25,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:25,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:25,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832423893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:25,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:54:25,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 11:54:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267463859] [2022-11-20 11:54:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:54:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:54:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:54:25,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:25,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 291 transitions, 902 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 11:54:25,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:25,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:25,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:25,568 INFO L130 PetriNetUnfolder]: 7/431 cut-off events. [2022-11-20 11:54:25,568 INFO L131 PetriNetUnfolder]: For 213/249 co-relation queries the response was YES. [2022-11-20 11:54:25,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 431 events. 7/431 cut-off events. For 213/249 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1323 event pairs, 0 based on Foata normal form. 3/398 useless extension candidates. Maximal degree in co-relation 454. Up to 17 conditions per place. [2022-11-20 11:54:25,575 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 13 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-20 11:54:25,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 290 transitions, 934 flow [2022-11-20 11:54:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:54:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:54:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 991 transitions. [2022-11-20 11:54:25,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820364238410596 [2022-11-20 11:54:25,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 991 transitions. [2022-11-20 11:54:25,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 991 transitions. [2022-11-20 11:54:25,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:25,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 991 transitions. [2022-11-20 11:54:25,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 11:54:25,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states 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 11:54:25,584 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states 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 11:54:25,584 INFO L175 Difference]: Start difference. First operand has 329 places, 291 transitions, 902 flow. Second operand 4 states and 991 transitions. [2022-11-20 11:54:25,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 290 transitions, 934 flow [2022-11-20 11:54:25,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 290 transitions, 888 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-20 11:54:25,594 INFO L231 Difference]: Finished difference. Result has 313 places, 290 transitions, 862 flow [2022-11-20 11:54:25,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=862, PETRI_PLACES=313, PETRI_TRANSITIONS=290} [2022-11-20 11:54:25,595 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 51 predicate places. [2022-11-20 11:54:25,596 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 290 transitions, 862 flow [2022-11-20 11:54:25,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 11:54:25,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:25,597 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:25,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:25,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:54:25,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1646850267, now seen corresponding path program 1 times [2022-11-20 11:54:25,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:25,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857868828] [2022-11-20 11:54:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:25,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:25,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:25,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857868828] [2022-11-20 11:54:25,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857868828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:25,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251408832] [2022-11-20 11:54:25,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:25,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:25,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:25,936 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:25,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:54:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:26,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:26,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:26,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:26,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251408832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:26,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:26,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:54:26,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900832156] [2022-11-20 11:54:26,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:26,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:54:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:26,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:54:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:54:26,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-20 11:54:26,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 290 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 246.9) internal successors, (2469), 10 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states 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 11:54:26,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:26,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-20 11:54:26,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:26,319 INFO L130 PetriNetUnfolder]: 3/263 cut-off events. [2022-11-20 11:54:26,320 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-11-20 11:54:26,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 263 events. 3/263 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 351. Up to 12 conditions per place. [2022-11-20 11:54:26,323 INFO L137 encePairwiseOnDemand]: 297/302 looper letters, 13 selfloop transitions, 7 changer transitions 0/224 dead transitions. [2022-11-20 11:54:26,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 224 transitions, 764 flow [2022-11-20 11:54:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:54:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:54:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2218 transitions. [2022-11-20 11:54:26,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8160412067696836 [2022-11-20 11:54:26,328 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2218 transitions. [2022-11-20 11:54:26,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2218 transitions. [2022-11-20 11:54:26,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:26,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2218 transitions. [2022-11-20 11:54:26,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.44444444444446) internal successors, (2218), 9 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states 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 11:54:26,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states 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 11:54:26,339 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states 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 11:54:26,339 INFO L175 Difference]: Start difference. First operand has 313 places, 290 transitions, 862 flow. Second operand 9 states and 2218 transitions. [2022-11-20 11:54:26,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 224 transitions, 764 flow [2022-11-20 11:54:26,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 224 transitions, 752 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:26,348 INFO L231 Difference]: Finished difference. Result has 250 places, 219 transitions, 714 flow [2022-11-20 11:54:26,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=714, PETRI_PLACES=250, PETRI_TRANSITIONS=219} [2022-11-20 11:54:26,349 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, -12 predicate places. [2022-11-20 11:54:26,349 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 219 transitions, 714 flow [2022-11-20 11:54:26,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.9) internal successors, (2469), 10 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states 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 11:54:26,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:26,351 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:26,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:26,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:54:26,563 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:26,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:26,564 INFO L85 PathProgramCache]: Analyzing trace with hash 319234449, now seen corresponding path program 1 times [2022-11-20 11:54:26,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:26,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517012408] [2022-11-20 11:54:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:26,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:28,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:28,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517012408] [2022-11-20 11:54:28,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517012408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:28,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:28,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:54:28,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153872452] [2022-11-20 11:54:28,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:28,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:54:28,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:54:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:54:28,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 302 [2022-11-20 11:54:28,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 219 transitions, 714 flow. Second operand has 16 states, 16 states have (on average 183.9375) internal successors, (2943), 16 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states 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 11:54:28,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:28,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 302 [2022-11-20 11:54:28,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:31,397 INFO L130 PetriNetUnfolder]: 1569/5253 cut-off events. [2022-11-20 11:54:31,397 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2022-11-20 11:54:31,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8472 conditions, 5253 events. 1569/5253 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 50944 event pairs, 485 based on Foata normal form. 0/4819 useless extension candidates. Maximal degree in co-relation 8204. Up to 1213 conditions per place. [2022-11-20 11:54:31,455 INFO L137 encePairwiseOnDemand]: 287/302 looper letters, 165 selfloop transitions, 24 changer transitions 0/348 dead transitions. [2022-11-20 11:54:31,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 348 transitions, 1390 flow [2022-11-20 11:54:31,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:54:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:54:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2925 transitions. [2022-11-20 11:54:31,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6456953642384106 [2022-11-20 11:54:31,461 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2925 transitions. [2022-11-20 11:54:31,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2925 transitions. [2022-11-20 11:54:31,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:31,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2925 transitions. [2022-11-20 11:54:31,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 195.0) internal successors, (2925), 15 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states 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 11:54:31,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 302.0) internal successors, (4832), 16 states have internal predecessors, (4832), 0 states have call successors, (0), 0 states 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 11:54:31,478 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 302.0) internal successors, (4832), 16 states have internal predecessors, (4832), 0 states have call successors, (0), 0 states 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 11:54:31,479 INFO L175 Difference]: Start difference. First operand has 250 places, 219 transitions, 714 flow. Second operand 15 states and 2925 transitions. [2022-11-20 11:54:31,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 348 transitions, 1390 flow [2022-11-20 11:54:31,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 348 transitions, 1367 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-20 11:54:31,492 INFO L231 Difference]: Finished difference. Result has 263 places, 242 transitions, 854 flow [2022-11-20 11:54:31,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=854, PETRI_PLACES=263, PETRI_TRANSITIONS=242} [2022-11-20 11:54:31,494 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 1 predicate places. [2022-11-20 11:54:31,494 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 242 transitions, 854 flow [2022-11-20 11:54:31,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 183.9375) internal successors, (2943), 16 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states 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 11:54:31,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:31,496 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 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] [2022-11-20 11:54:31,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:54:31,496 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:54:31,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:31,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1118045166, now seen corresponding path program 1 times [2022-11-20 11:54:31,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:31,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350505099] [2022-11-20 11:54:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:54:31,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:54:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:54:31,569 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:54:31,570 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:54:31,570 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-20 11:54:31,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-20 11:54:31,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-20 11:54:31,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-20 11:54:31,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-20 11:54:31,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-20 11:54:31,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-20 11:54:31,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-20 11:54:31,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-20 11:54:31,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-20 11:54:31,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-20 11:54:31,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-20 11:54:31,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-20 11:54:31,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-20 11:54:31,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-11-20 11:54:31,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-11-20 11:54:31,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-11-20 11:54:31,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-20 11:54:31,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-20 11:54:31,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-20 11:54:31,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-20 11:54:31,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-20 11:54:31,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-20 11:54:31,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:54:31,576 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:31,576 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:54:31,577 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:54:31,625 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:54:31,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2022-11-20 11:54:31,940 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2022-11-20 11:54:31,940 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-20 11:54:31,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3394 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2022-11-20 11:54:31,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 381 transitions, 792 flow [2022-11-20 11:54:31,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 381 transitions, 792 flow [2022-11-20 11:54:31,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:54:31,976 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;@64d9a1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:54:31,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-20 11:54:31,978 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-20 11:54:31,979 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:54:31,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:31,979 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] [2022-11-20 11:54:31,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:31,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:31,980 INFO L85 PathProgramCache]: Analyzing trace with hash -287945972, now seen corresponding path program 1 times [2022-11-20 11:54:31,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:31,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654603316] [2022-11-20 11:54:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:31,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:32,031 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 11:54:32,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:32,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654603316] [2022-11-20 11:54:32,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654603316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:32,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:32,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:32,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816439173] [2022-11-20 11:54:32,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:32,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:32,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:32,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:32,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:32,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:32,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 381 transitions, 792 flow. Second operand has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states 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 11:54:32,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:32,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:32,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:32,244 INFO L130 PetriNetUnfolder]: 16/639 cut-off events. [2022-11-20 11:54:32,244 INFO L131 PetriNetUnfolder]: For 55/69 co-relation queries the response was YES. [2022-11-20 11:54:32,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 639 events. 16/639 cut-off events. For 55/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2955 event pairs, 1 based on Foata normal form. 208/766 useless extension candidates. Maximal degree in co-relation 466. Up to 28 conditions per place. [2022-11-20 11:54:32,256 INFO L137 encePairwiseOnDemand]: 323/381 looper letters, 21 selfloop transitions, 4 changer transitions 1/333 dead transitions. [2022-11-20 11:54:32,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 333 transitions, 746 flow [2022-11-20 11:54:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1620 transitions. [2022-11-20 11:54:32,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503937007874016 [2022-11-20 11:54:32,261 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1620 transitions. [2022-11-20 11:54:32,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1620 transitions. [2022-11-20 11:54:32,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:32,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1620 transitions. [2022-11-20 11:54:32,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states 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 11:54:32,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 11:54:32,269 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 11:54:32,269 INFO L175 Difference]: Start difference. First operand has 329 places, 381 transitions, 792 flow. Second operand 5 states and 1620 transitions. [2022-11-20 11:54:32,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 333 transitions, 746 flow [2022-11-20 11:54:32,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 333 transitions, 746 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:54:32,278 INFO L231 Difference]: Finished difference. Result has 332 places, 328 transitions, 712 flow [2022-11-20 11:54:32,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=712, PETRI_PLACES=332, PETRI_TRANSITIONS=328} [2022-11-20 11:54:32,279 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 3 predicate places. [2022-11-20 11:54:32,279 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 328 transitions, 712 flow [2022-11-20 11:54:32,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states 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 11:54:32,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:32,280 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:54:32,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:54:32,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:32,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1585724167, now seen corresponding path program 1 times [2022-11-20 11:54:32,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:32,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649349878] [2022-11-20 11:54:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:32,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:54:32,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:32,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649349878] [2022-11-20 11:54:32,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649349878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:32,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:32,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:32,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669964944] [2022-11-20 11:54:32,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:32,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:32,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:32,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:32,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:32,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 328 transitions, 712 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 11:54:32,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:32,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:32,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:32,601 INFO L130 PetriNetUnfolder]: 16/637 cut-off events. [2022-11-20 11:54:32,601 INFO L131 PetriNetUnfolder]: For 58/72 co-relation queries the response was YES. [2022-11-20 11:54:32,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 637 events. 16/637 cut-off events. For 58/72 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2931 event pairs, 1 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 660. Up to 20 conditions per place. [2022-11-20 11:54:32,614 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 13 selfloop transitions, 8 changer transitions 0/328 dead transitions. [2022-11-20 11:54:32,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 328 transitions, 752 flow [2022-11-20 11:54:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:32,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-11-20 11:54:32,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183727034120735 [2022-11-20 11:54:32,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-11-20 11:54:32,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-11-20 11:54:32,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:32,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-11-20 11:54:32,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states 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 11:54:32,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 11:54:32,633 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 11:54:32,634 INFO L175 Difference]: Start difference. First operand has 332 places, 328 transitions, 712 flow. Second operand 5 states and 1559 transitions. [2022-11-20 11:54:32,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 328 transitions, 752 flow [2022-11-20 11:54:32,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:54:32,644 INFO L231 Difference]: Finished difference. Result has 334 places, 328 transitions, 730 flow [2022-11-20 11:54:32,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=730, PETRI_PLACES=334, PETRI_TRANSITIONS=328} [2022-11-20 11:54:32,645 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 5 predicate places. [2022-11-20 11:54:32,645 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 328 transitions, 730 flow [2022-11-20 11:54:32,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 11:54:32,646 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:32,646 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:54:32,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:54:32,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:32,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:32,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1912810137, now seen corresponding path program 1 times [2022-11-20 11:54:32,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:32,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20217943] [2022-11-20 11:54:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:32,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:32,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:32,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20217943] [2022-11-20 11:54:32,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20217943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:32,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117558801] [2022-11-20 11:54:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:32,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:32,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:32,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:54:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:32,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:32,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:32,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:32,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117558801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:32,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:54:32,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 11:54:32,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059500047] [2022-11-20 11:54:32,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:32,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:54:32,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:32,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:54:32,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:54:32,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:32,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 328 transitions, 730 flow. Second operand has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:32,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:32,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:32,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:33,178 INFO L130 PetriNetUnfolder]: 16/636 cut-off events. [2022-11-20 11:54:33,178 INFO L131 PetriNetUnfolder]: For 65/79 co-relation queries the response was YES. [2022-11-20 11:54:33,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 636 events. 16/636 cut-off events. For 65/79 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2920 event pairs, 1 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 658. Up to 23 conditions per place. [2022-11-20 11:54:33,191 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 15 selfloop transitions, 5 changer transitions 0/327 dead transitions. [2022-11-20 11:54:33,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 327 transitions, 766 flow [2022-11-20 11:54:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:54:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:54:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-11-20 11:54:33,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195538057742782 [2022-11-20 11:54:33,195 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-11-20 11:54:33,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-11-20 11:54:33,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:33,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-11-20 11:54:33,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 11:54:33,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:33,203 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:33,203 INFO L175 Difference]: Start difference. First operand has 334 places, 328 transitions, 730 flow. Second operand 4 states and 1249 transitions. [2022-11-20 11:54:33,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 327 transitions, 766 flow [2022-11-20 11:54:33,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 327 transitions, 754 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:33,213 INFO L231 Difference]: Finished difference. Result has 333 places, 327 transitions, 724 flow [2022-11-20 11:54:33,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=724, PETRI_PLACES=333, PETRI_TRANSITIONS=327} [2022-11-20 11:54:33,214 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 4 predicate places. [2022-11-20 11:54:33,214 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 327 transitions, 724 flow [2022-11-20 11:54:33,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:33,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:33,215 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:33,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:33,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 11:54:33,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:33,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1887991603, now seen corresponding path program 1 times [2022-11-20 11:54:33,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:33,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137857346] [2022-11-20 11:54:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:33,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:33,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:33,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137857346] [2022-11-20 11:54:33,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137857346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:33,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752282595] [2022-11-20 11:54:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:33,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:33,499 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:33,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:54:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:33,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:33,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:33,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:33,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752282595] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:33,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:33,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:54:33,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542985276] [2022-11-20 11:54:33,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:33,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:54:33,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:54:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:54:33,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:33,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 327 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 310.7) internal successors, (3107), 10 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states 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 11:54:33,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:33,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:33,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:33,975 INFO L130 PetriNetUnfolder]: 16/644 cut-off events. [2022-11-20 11:54:33,975 INFO L131 PetriNetUnfolder]: For 71/85 co-relation queries the response was YES. [2022-11-20 11:54:33,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 644 events. 16/644 cut-off events. For 71/85 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2911 event pairs, 1 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 648. Up to 20 conditions per place. [2022-11-20 11:54:33,985 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 22 selfloop transitions, 9 changer transitions 0/338 dead transitions. [2022-11-20 11:54:33,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 338 transitions, 824 flow [2022-11-20 11:54:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:54:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:54:33,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2805 transitions. [2022-11-20 11:54:33,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180227471566054 [2022-11-20 11:54:33,990 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2805 transitions. [2022-11-20 11:54:33,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2805 transitions. [2022-11-20 11:54:33,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:33,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2805 transitions. [2022-11-20 11:54:33,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.6666666666667) internal successors, (2805), 9 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states 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 11:54:34,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states 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 11:54:34,002 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states 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 11:54:34,003 INFO L175 Difference]: Start difference. First operand has 333 places, 327 transitions, 724 flow. Second operand 9 states and 2805 transitions. [2022-11-20 11:54:34,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 338 transitions, 824 flow [2022-11-20 11:54:34,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 338 transitions, 810 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:34,010 INFO L231 Difference]: Finished difference. Result has 342 places, 331 transitions, 770 flow [2022-11-20 11:54:34,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=770, PETRI_PLACES=342, PETRI_TRANSITIONS=331} [2022-11-20 11:54:34,048 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 13 predicate places. [2022-11-20 11:54:34,048 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 331 transitions, 770 flow [2022-11-20 11:54:34,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.7) internal successors, (3107), 10 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states 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 11:54:34,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:34,049 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:34,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:34,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 11:54:34,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:34,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash 688310381, now seen corresponding path program 2 times [2022-11-20 11:54:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:34,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811049950] [2022-11-20 11:54:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:34,324 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 11:54:34,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:34,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811049950] [2022-11-20 11:54:34,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811049950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:34,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:34,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:34,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217121945] [2022-11-20 11:54:34,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:34,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:34,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:34,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:34,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:34,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 331 transitions, 770 flow. Second operand has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states 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 11:54:34,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:34,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:34,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:34,536 INFO L130 PetriNetUnfolder]: 14/590 cut-off events. [2022-11-20 11:54:34,536 INFO L131 PetriNetUnfolder]: For 133/308 co-relation queries the response was YES. [2022-11-20 11:54:34,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 590 events. 14/590 cut-off events. For 133/308 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2533 event pairs, 1 based on Foata normal form. 3/525 useless extension candidates. Maximal degree in co-relation 626. Up to 40 conditions per place. [2022-11-20 11:54:34,548 INFO L137 encePairwiseOnDemand]: 374/381 looper letters, 21 selfloop transitions, 4 changer transitions 0/338 dead transitions. [2022-11-20 11:54:34,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 338 transitions, 834 flow [2022-11-20 11:54:34,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1568 transitions. [2022-11-20 11:54:34,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8230971128608924 [2022-11-20 11:54:34,551 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1568 transitions. [2022-11-20 11:54:34,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1568 transitions. [2022-11-20 11:54:34,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:34,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1568 transitions. [2022-11-20 11:54:34,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.6) internal successors, (1568), 5 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 11:54:34,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 11:54:34,559 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 11:54:34,559 INFO L175 Difference]: Start difference. First operand has 342 places, 331 transitions, 770 flow. Second operand 5 states and 1568 transitions. [2022-11-20 11:54:34,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 338 transitions, 834 flow [2022-11-20 11:54:34,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 338 transitions, 818 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-20 11:54:34,568 INFO L231 Difference]: Finished difference. Result has 345 places, 334 transitions, 786 flow [2022-11-20 11:54:34,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=345, PETRI_TRANSITIONS=334} [2022-11-20 11:54:34,569 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 16 predicate places. [2022-11-20 11:54:34,570 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 334 transitions, 786 flow [2022-11-20 11:54:34,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states 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 11:54:34,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:34,571 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-20 11:54:34,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:54:34,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:34,572 INFO L85 PathProgramCache]: Analyzing trace with hash -291670939, now seen corresponding path program 1 times [2022-11-20 11:54:34,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:34,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299879585] [2022-11-20 11:54:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:34,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 11:54:34,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:34,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299879585] [2022-11-20 11:54:34,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299879585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:34,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:34,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:34,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458740159] [2022-11-20 11:54:34,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:34,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:54:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:54:34,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:54:34,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:34,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 334 transitions, 786 flow. Second operand has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 11:54:34,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:34,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:34,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:34,836 INFO L130 PetriNetUnfolder]: 14/588 cut-off events. [2022-11-20 11:54:34,836 INFO L131 PetriNetUnfolder]: For 125/286 co-relation queries the response was YES. [2022-11-20 11:54:34,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 588 events. 14/588 cut-off events. For 125/286 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2523 event pairs, 1 based on Foata normal form. 11/538 useless extension candidates. Maximal degree in co-relation 636. Up to 20 conditions per place. [2022-11-20 11:54:34,848 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 13 selfloop transitions, 8 changer transitions 0/334 dead transitions. [2022-11-20 11:54:34,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 334 transitions, 826 flow [2022-11-20 11:54:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:54:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:54:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-11-20 11:54:34,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183727034120735 [2022-11-20 11:54:34,851 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-11-20 11:54:34,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-11-20 11:54:34,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:34,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-11-20 11:54:34,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states 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 11:54:34,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 11:54:34,858 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 11:54:34,858 INFO L175 Difference]: Start difference. First operand has 345 places, 334 transitions, 786 flow. Second operand 5 states and 1559 transitions. [2022-11-20 11:54:34,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 334 transitions, 826 flow [2022-11-20 11:54:34,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 334 transitions, 824 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:54:34,866 INFO L231 Difference]: Finished difference. Result has 348 places, 334 transitions, 804 flow [2022-11-20 11:54:34,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=348, PETRI_TRANSITIONS=334} [2022-11-20 11:54:34,868 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 19 predicate places. [2022-11-20 11:54:34,868 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 334 transitions, 804 flow [2022-11-20 11:54:34,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 11:54:34,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:34,869 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-11-20 11:54:34,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 11:54:34,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:34,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:34,870 INFO L85 PathProgramCache]: Analyzing trace with hash -451863371, now seen corresponding path program 1 times [2022-11-20 11:54:34,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:34,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824586928] [2022-11-20 11:54:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:34,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:35,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:35,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824586928] [2022-11-20 11:54:35,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824586928] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:35,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401654036] [2022-11-20 11:54:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:35,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:35,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:35,037 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:35,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:54:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:35,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:54:35,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:35,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:35,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401654036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:35,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:35,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:54:35,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230476592] [2022-11-20 11:54:35,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:54:35,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:54:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:54:35,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:35,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 334 transitions, 804 flow. Second operand has 18 states, 18 states have (on average 311.1111111111111) internal successors, (5600), 18 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states 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 11:54:35,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:35,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:35,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:35,846 INFO L130 PetriNetUnfolder]: 14/616 cut-off events. [2022-11-20 11:54:35,847 INFO L131 PetriNetUnfolder]: For 120/134 co-relation queries the response was YES. [2022-11-20 11:54:35,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 616 events. 14/616 cut-off events. For 120/134 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2512 event pairs, 1 based on Foata normal form. 4/559 useless extension candidates. Maximal degree in co-relation 626. Up to 20 conditions per place. [2022-11-20 11:54:35,856 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 38 selfloop transitions, 21 changer transitions 0/369 dead transitions. [2022-11-20 11:54:35,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 369 transitions, 1076 flow [2022-11-20 11:54:35,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:54:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:54:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6531 transitions. [2022-11-20 11:54:35,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8162729658792651 [2022-11-20 11:54:35,868 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6531 transitions. [2022-11-20 11:54:35,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6531 transitions. [2022-11-20 11:54:35,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:35,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6531 transitions. [2022-11-20 11:54:35,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states 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 11:54:35,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 381.0) internal successors, (8382), 22 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states 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 11:54:35,893 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 381.0) internal successors, (8382), 22 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states 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 11:54:35,894 INFO L175 Difference]: Start difference. First operand has 348 places, 334 transitions, 804 flow. Second operand 21 states and 6531 transitions. [2022-11-20 11:54:35,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 369 transitions, 1076 flow [2022-11-20 11:54:35,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 369 transitions, 1064 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:35,905 INFO L231 Difference]: Finished difference. Result has 370 places, 347 transitions, 948 flow [2022-11-20 11:54:35,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=948, PETRI_PLACES=370, PETRI_TRANSITIONS=347} [2022-11-20 11:54:35,906 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 41 predicate places. [2022-11-20 11:54:35,907 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 347 transitions, 948 flow [2022-11-20 11:54:35,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.1111111111111) internal successors, (5600), 18 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states 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 11:54:35,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:35,909 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 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] [2022-11-20 11:54:35,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:36,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 11:54:36,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2017193333, now seen corresponding path program 2 times [2022-11-20 11:54:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:36,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267479611] [2022-11-20 11:54:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:36,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:36,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267479611] [2022-11-20 11:54:36,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267479611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:36,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926111972] [2022-11-20 11:54:36,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:54:36,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:36,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:36,495 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:36,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:54:36,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:54:36,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:36,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:54:36,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:36,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:54:37,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926111972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:37,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:37,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:54:37,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273000206] [2022-11-20 11:54:37,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:37,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:54:37,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:37,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:54:37,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:54:37,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:37,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 347 transitions, 948 flow. Second operand has 23 states, 23 states have (on average 311.3478260869565) internal successors, (7161), 23 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states 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 11:54:37,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:37,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:37,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:37,812 INFO L130 PetriNetUnfolder]: 14/637 cut-off events. [2022-11-20 11:54:37,813 INFO L131 PetriNetUnfolder]: For 280/294 co-relation queries the response was YES. [2022-11-20 11:54:37,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 637 events. 14/637 cut-off events. For 280/294 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2538 event pairs, 1 based on Foata normal form. 3/579 useless extension candidates. Maximal degree in co-relation 696. Up to 20 conditions per place. [2022-11-20 11:54:37,825 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 50 selfloop transitions, 30 changer transitions 0/390 dead transitions. [2022-11-20 11:54:37,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 390 transitions, 1318 flow [2022-11-20 11:54:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:54:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:54:37,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9323 transitions. [2022-11-20 11:54:37,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815660542432196 [2022-11-20 11:54:37,850 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9323 transitions. [2022-11-20 11:54:37,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9323 transitions. [2022-11-20 11:54:37,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:37,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9323 transitions. [2022-11-20 11:54:37,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 310.76666666666665) internal successors, (9323), 30 states have internal predecessors, (9323), 0 states have call successors, (0), 0 states 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 11:54:37,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 381.0) internal successors, (11811), 31 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states 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 11:54:37,902 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 381.0) internal successors, (11811), 31 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states 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 11:54:37,903 INFO L175 Difference]: Start difference. First operand has 370 places, 347 transitions, 948 flow. Second operand 30 states and 9323 transitions. [2022-11-20 11:54:37,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 390 transitions, 1318 flow [2022-11-20 11:54:37,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 390 transitions, 1238 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-20 11:54:37,914 INFO L231 Difference]: Finished difference. Result has 395 places, 357 transitions, 1046 flow [2022-11-20 11:54:37,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1046, PETRI_PLACES=395, PETRI_TRANSITIONS=357} [2022-11-20 11:54:37,916 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 66 predicate places. [2022-11-20 11:54:37,916 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 357 transitions, 1046 flow [2022-11-20 11:54:37,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 311.3478260869565) internal successors, (7161), 23 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states 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 11:54:37,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:37,920 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 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] [2022-11-20 11:54:37,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:38,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 11:54:38,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:38,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:38,127 INFO L85 PathProgramCache]: Analyzing trace with hash 524068794, now seen corresponding path program 3 times [2022-11-20 11:54:38,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:38,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038099629] [2022-11-20 11:54:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:38,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:38,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:38,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038099629] [2022-11-20 11:54:38,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038099629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687938931] [2022-11-20 11:54:38,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:54:38,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:38,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:38,294 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:38,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:54:38,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:54:38,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:38,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:38,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:38,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:38,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687938931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:38,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:54:38,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 11:54:38,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694842679] [2022-11-20 11:54:38,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:38,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:54:38,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:38,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:54:38,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:54:38,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:38,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 357 transitions, 1046 flow. Second operand has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states 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 11:54:38,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:38,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:38,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:38,798 INFO L130 PetriNetUnfolder]: 14/635 cut-off events. [2022-11-20 11:54:38,798 INFO L131 PetriNetUnfolder]: For 287/434 co-relation queries the response was YES. [2022-11-20 11:54:38,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 635 events. 14/635 cut-off events. For 287/434 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2533 event pairs, 1 based on Foata normal form. 5/579 useless extension candidates. Maximal degree in co-relation 644. Up to 30 conditions per place. [2022-11-20 11:54:38,811 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 15 selfloop transitions, 5 changer transitions 0/356 dead transitions. [2022-11-20 11:54:38,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 356 transitions, 1082 flow [2022-11-20 11:54:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:54:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:54:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-11-20 11:54:38,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195538057742782 [2022-11-20 11:54:38,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-11-20 11:54:38,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-11-20 11:54:38,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:38,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-11-20 11:54:38,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 11:54:38,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:38,820 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:38,820 INFO L175 Difference]: Start difference. First operand has 395 places, 357 transitions, 1046 flow. Second operand 4 states and 1249 transitions. [2022-11-20 11:54:38,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 356 transitions, 1082 flow [2022-11-20 11:54:38,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 356 transitions, 1036 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-20 11:54:38,831 INFO L231 Difference]: Finished difference. Result has 379 places, 356 transitions, 1006 flow [2022-11-20 11:54:38,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1006, PETRI_PLACES=379, PETRI_TRANSITIONS=356} [2022-11-20 11:54:38,833 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 50 predicate places. [2022-11-20 11:54:38,833 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 356 transitions, 1006 flow [2022-11-20 11:54:38,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states 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 11:54:38,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:38,834 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:38,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:39,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 11:54:39,041 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash 581477173, now seen corresponding path program 1 times [2022-11-20 11:54:39,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:39,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318564909] [2022-11-20 11:54:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:39,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:39,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318564909] [2022-11-20 11:54:39,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318564909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:39,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694108327] [2022-11-20 11:54:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:39,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:39,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:39,165 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:39,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:54:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:39,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:54:39,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:39,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:39,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694108327] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:39,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:39,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:54:39,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537972511] [2022-11-20 11:54:39,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:39,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:54:39,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:39,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:54:39,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:54:39,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-20 11:54:39,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 356 transitions, 1006 flow. Second operand has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states 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 11:54:39,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:39,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-20 11:54:39,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:39,757 INFO L130 PetriNetUnfolder]: 10/531 cut-off events. [2022-11-20 11:54:39,757 INFO L131 PetriNetUnfolder]: For 254/271 co-relation queries the response was YES. [2022-11-20 11:54:39,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 531 events. 10/531 cut-off events. For 254/271 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1487 event pairs, 5 based on Foata normal form. 3/485 useless extension candidates. Maximal degree in co-relation 542. Up to 17 conditions per place. [2022-11-20 11:54:39,768 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 22 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2022-11-20 11:54:39,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 367 transitions, 1106 flow [2022-11-20 11:54:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:54:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:54:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2805 transitions. [2022-11-20 11:54:39,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180227471566054 [2022-11-20 11:54:39,773 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2805 transitions. [2022-11-20 11:54:39,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2805 transitions. [2022-11-20 11:54:39,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:39,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2805 transitions. [2022-11-20 11:54:39,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.6666666666667) internal successors, (2805), 9 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states 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 11:54:39,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states 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 11:54:39,789 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states 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 11:54:39,789 INFO L175 Difference]: Start difference. First operand has 379 places, 356 transitions, 1006 flow. Second operand 9 states and 2805 transitions. [2022-11-20 11:54:39,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 367 transitions, 1106 flow [2022-11-20 11:54:39,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 367 transitions, 1092 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:54:39,800 INFO L231 Difference]: Finished difference. Result has 388 places, 360 transitions, 1052 flow [2022-11-20 11:54:39,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=388, PETRI_TRANSITIONS=360} [2022-11-20 11:54:39,806 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 59 predicate places. [2022-11-20 11:54:39,807 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 360 transitions, 1052 flow [2022-11-20 11:54:39,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states 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 11:54:39,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:39,808 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:39,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:40,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890ea754-384a-4a37-86c5-cbb7f39b54c2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:40,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:54:40,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:40,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2071018782, now seen corresponding path program 1 times [2022-11-20 11:54:40,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:40,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859311886] [2022-11-20 11:54:40,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:40,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:54:40,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:40,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859311886] [2022-11-20 11:54:40,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859311886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:40,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:40,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:54:40,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242732985] [2022-11-20 11:54:40,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:40,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:54:40,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:40,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:54:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:54:40,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 381 [2022-11-20 11:54:40,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 360 transitions, 1052 flow. Second operand has 12 states, 12 states have (on average 242.16666666666666) internal successors, (2906), 12 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states 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 11:54:40,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:40,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 381 [2022-11-20 11:54:40,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand