./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:00:18,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:00:18,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:00:18,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:00:18,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:00:18,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:00:18,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:00:18,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:00:18,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:00:18,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:00:18,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:00:18,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:00:18,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:00:18,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:00:18,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:00:18,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:00:18,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:00:18,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:00:18,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:00:18,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:00:18,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:00:18,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:00:18,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:00:18,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:00:18,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:00:18,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:00:18,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:00:18,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:00:18,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:00:18,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:00:18,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:00:18,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:00:18,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:00:18,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:00:18,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:00:18,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:00:18,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:00:18,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:00:18,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:00:18,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:00:18,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:00:18,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:00:18,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:00:18,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:00:18,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:00:18,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:00:18,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:00:18,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:00:18,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:00:18,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:00:18,818 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:00:18,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:00:18,819 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:00:18,820 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:00:18,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:00:18,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:00:18,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:00:18,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:00:18,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:00:18,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:00:18,822 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:00:18,822 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:00:18,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:00:18,822 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:00:18,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:00:18,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:00:18,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:00:18,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:00:18,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:00:18,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:00:18,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:00:18,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:00:18,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:00:18,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:00:18,826 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:00:18,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:00:18,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:00:18,827 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_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2022-11-18 21:00:19,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:00:19,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:00:19,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:00:19,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:00:19,203 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:00:19,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-11-18 21:00:19,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/data/98cb553c5/9945f2eadb4d4301a49d3dee557244da/FLAG546cd7abe [2022-11-18 21:00:20,180 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:00:20,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-11-18 21:00:20,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/data/98cb553c5/9945f2eadb4d4301a49d3dee557244da/FLAG546cd7abe [2022-11-18 21:00:20,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/data/98cb553c5/9945f2eadb4d4301a49d3dee557244da [2022-11-18 21:00:20,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:00:20,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:00:20,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:00:20,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:00:20,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:00:20,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:20" (1/1) ... [2022-11-18 21:00:20,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b74ba48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:20, skipping insertion in model container [2022-11-18 21:00:20,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:20" (1/1) ... [2022-11-18 21:00:20,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:00:20,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:00:21,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:00:21,153 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:00:21,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:00:21,292 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:00:21,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21 WrapperNode [2022-11-18 21:00:21,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:00:21,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:00:21,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:00:21,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:00:21,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,373 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-11-18 21:00:21,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:00:21,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:00:21,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:00:21,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:00:21,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:00:21,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:00:21,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:00:21,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:00:21,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (1/1) ... [2022-11-18 21:00:21,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:00:21,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:21,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:00:21,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:00:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:00:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:00:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:00:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:00:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 21:00:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:00:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 21:00:21,622 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 21:00:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:00:21,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:00:21,628 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:00:21,893 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:00:21,910 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:00:22,276 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:00:22,286 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:00:22,296 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 21:00:22,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:00:22 BoogieIcfgContainer [2022-11-18 21:00:22,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:00:22,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:00:22,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:00:22,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:00:22,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:00:20" (1/3) ... [2022-11-18 21:00:22,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f4b25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:00:22, skipping insertion in model container [2022-11-18 21:00:22,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:21" (2/3) ... [2022-11-18 21:00:22,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f4b25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:00:22, skipping insertion in model container [2022-11-18 21:00:22,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:00:22" (3/3) ... [2022-11-18 21:00:22,315 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2022-11-18 21:00:22,330 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:00:22,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:00:22,344 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 21:00:22,344 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:00:22,451 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 21:00:22,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 110 transitions, 225 flow [2022-11-18 21:00:22,628 INFO L130 PetriNetUnfolder]: 6/109 cut-off events. [2022-11-18 21:00:22,629 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:00:22,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 109 events. 6/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-11-18 21:00:22,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 110 transitions, 225 flow [2022-11-18 21:00:22,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 109 transitions, 221 flow [2022-11-18 21:00:22,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:00:22,682 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;@2b9d5bcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:00:22,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 21:00:22,697 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-11-18 21:00:22,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:00:22,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:22,698 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:22,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:22,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:22,708 INFO L85 PathProgramCache]: Analyzing trace with hash -965315634, now seen corresponding path program 1 times [2022-11-18 21:00:22,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:22,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010839249] [2022-11-18 21:00:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:23,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:23,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010839249] [2022-11-18 21:00:23,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010839249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:23,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:23,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:00:23,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364231216] [2022-11-18 21:00:23,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:23,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:00:23,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:23,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:00:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:00:23,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-18 21:00:23,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:23,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-18 21:00:23,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:23,314 INFO L130 PetriNetUnfolder]: 3/113 cut-off events. [2022-11-18 21:00:23,315 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 21:00:23,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 113 events. 3/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 197 event pairs, 0 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 78. Up to 14 conditions per place. [2022-11-18 21:00:23,318 INFO L137 encePairwiseOnDemand]: 100/110 looper letters, 16 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2022-11-18 21:00:23,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 269 flow [2022-11-18 21:00:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:00:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:00:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2022-11-18 21:00:23,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9036363636363637 [2022-11-18 21:00:23,337 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2022-11-18 21:00:23,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2022-11-18 21:00:23,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:23,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2022-11-18 21:00:23,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,362 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,365 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 221 flow. Second operand 5 states and 497 transitions. [2022-11-18 21:00:23,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 269 flow [2022-11-18 21:00:23,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:00:23,381 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 246 flow [2022-11-18 21:00:23,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2022-11-18 21:00:23,389 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 6 predicate places. [2022-11-18 21:00:23,390 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 246 flow [2022-11-18 21:00:23,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:23,391 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] [2022-11-18 21:00:23,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:00:23,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:23,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash -852436165, now seen corresponding path program 1 times [2022-11-18 21:00:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:23,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256971850] [2022-11-18 21:00:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:23,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:00:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:23,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256971850] [2022-11-18 21:00:23,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256971850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:23,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:23,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:00:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57010403] [2022-11-18 21:00:23,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:23,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:00:23,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:00:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:00:23,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-18 21:00:23,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:23,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-18 21:00:23,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:23,573 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-18 21:00:23,573 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:00:23,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 112 events. 3/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 192 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 110. Up to 7 conditions per place. [2022-11-18 21:00:23,584 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 8 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2022-11-18 21:00:23,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 109 transitions, 276 flow [2022-11-18 21:00:23,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:00:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:00:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2022-11-18 21:00:23,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-18 21:00:23,591 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2022-11-18 21:00:23,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2022-11-18 21:00:23,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:23,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2022-11-18 21:00:23,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,598 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,598 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 246 flow. Second operand 5 states and 484 transitions. [2022-11-18 21:00:23,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 109 transitions, 276 flow [2022-11-18 21:00:23,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 109 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:00:23,605 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 264 flow [2022-11-18 21:00:23,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2022-11-18 21:00:23,606 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 9 predicate places. [2022-11-18 21:00:23,606 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 264 flow [2022-11-18 21:00:23,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:23,608 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] [2022-11-18 21:00:23,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:00:23,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:23,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash -655717080, now seen corresponding path program 1 times [2022-11-18 21:00:23,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:23,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468064038] [2022-11-18 21:00:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:23,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:23,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:23,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468064038] [2022-11-18 21:00:23,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468064038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:23,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709711871] [2022-11-18 21:00:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:23,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:23,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:23,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:23,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:00:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:23,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:00:23,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:23,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:23,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709711871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:23,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:00:23,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:00:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022588125] [2022-11-18 21:00:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:23,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:00:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:00:23,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:00:23,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-18 21:00:23,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:23,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-18 21:00:23,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:24,116 INFO L130 PetriNetUnfolder]: 3/111 cut-off events. [2022-11-18 21:00:24,116 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-18 21:00:24,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 111 events. 3/111 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 108. Up to 6 conditions per place. [2022-11-18 21:00:24,119 INFO L137 encePairwiseOnDemand]: 105/110 looper letters, 12 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2022-11-18 21:00:24,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 302 flow [2022-11-18 21:00:24,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:00:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:00:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 677 transitions. [2022-11-18 21:00:24,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792207792207792 [2022-11-18 21:00:24,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 677 transitions. [2022-11-18 21:00:24,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 677 transitions. [2022-11-18 21:00:24,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:24,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 677 transitions. [2022-11-18 21:00:24,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,129 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,129 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 264 flow. Second operand 7 states and 677 transitions. [2022-11-18 21:00:24,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 302 flow [2022-11-18 21:00:24,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 111 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:00:24,134 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 260 flow [2022-11-18 21:00:24,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2022-11-18 21:00:24,151 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 11 predicate places. [2022-11-18 21:00:24,151 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 260 flow [2022-11-18 21:00:24,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:24,152 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] [2022-11-18 21:00:24,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:24,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:24,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1921866257, now seen corresponding path program 1 times [2022-11-18 21:00:24,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:24,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813756051] [2022-11-18 21:00:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:24,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:24,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813756051] [2022-11-18 21:00:24,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813756051] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:24,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230544998] [2022-11-18 21:00:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:24,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:24,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:24,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:24,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:00:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:00:24,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:00:24,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:24,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230544998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:24,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:00:24,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 21:00:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768868978] [2022-11-18 21:00:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:24,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:00:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:00:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:00:24,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 110 [2022-11-18 21:00:24,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:24,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 110 [2022-11-18 21:00:24,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:24,741 INFO L130 PetriNetUnfolder]: 3/135 cut-off events. [2022-11-18 21:00:24,741 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-18 21:00:24,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 135 events. 3/135 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 149 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 136. Up to 10 conditions per place. [2022-11-18 21:00:24,744 INFO L137 encePairwiseOnDemand]: 107/110 looper letters, 11 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-11-18 21:00:24,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 294 flow [2022-11-18 21:00:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:00:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:00:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2022-11-18 21:00:24,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-18 21:00:24,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2022-11-18 21:00:24,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2022-11-18 21:00:24,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:24,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2022-11-18 21:00:24,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,754 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 260 flow. Second operand 3 states and 308 transitions. [2022-11-18 21:00:24,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 294 flow [2022-11-18 21:00:24,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 112 transitions, 283 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 21:00:24,764 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 261 flow [2022-11-18 21:00:24,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2022-11-18 21:00:24,767 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 9 predicate places. [2022-11-18 21:00:24,767 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 261 flow [2022-11-18 21:00:24,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:24,768 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] [2022-11-18 21:00:24,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 21:00:24,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:24,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1806466692, now seen corresponding path program 1 times [2022-11-18 21:00:24,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:24,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682996905] [2022-11-18 21:00:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:25,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:25,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682996905] [2022-11-18 21:00:25,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682996905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:25,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128142179] [2022-11-18 21:00:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:25,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:25,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:25,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:25,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:00:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:25,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:00:25,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:25,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:25,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128142179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:00:25,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:00:25,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 21:00:25,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576673934] [2022-11-18 21:00:25,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:00:25,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:00:25,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:25,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:00:25,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:00:25,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-18 21:00:25,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 261 flow. Second operand has 10 states, 10 states have (on average 96.7) internal successors, (967), 10 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:25,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:25,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-18 21:00:25,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:25,681 INFO L130 PetriNetUnfolder]: 3/143 cut-off events. [2022-11-18 21:00:25,681 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 21:00:25,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 143 events. 3/143 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 126. Up to 7 conditions per place. [2022-11-18 21:00:25,687 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 17 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2022-11-18 21:00:25,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 349 flow [2022-11-18 21:00:25,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:00:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:00:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 874 transitions. [2022-11-18 21:00:25,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8828282828282829 [2022-11-18 21:00:25,694 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 874 transitions. [2022-11-18 21:00:25,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 874 transitions. [2022-11-18 21:00:25,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:25,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 874 transitions. [2022-11-18 21:00:25,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.11111111111111) internal successors, (874), 9 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:25,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:25,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 110.0) internal successors, (1100), 10 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:25,705 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 261 flow. Second operand 9 states and 874 transitions. [2022-11-18 21:00:25,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 349 flow [2022-11-18 21:00:25,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 120 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:00:25,717 INFO L231 Difference]: Finished difference. Result has 127 places, 113 transitions, 317 flow [2022-11-18 21:00:25,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=317, PETRI_PLACES=127, PETRI_TRANSITIONS=113} [2022-11-18 21:00:25,723 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 20 predicate places. [2022-11-18 21:00:25,723 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 113 transitions, 317 flow [2022-11-18 21:00:25,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.7) internal successors, (967), 10 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:25,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:25,725 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] [2022-11-18 21:00:25,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:25,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:25,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash 510163484, now seen corresponding path program 2 times [2022-11-18 21:00:25,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:25,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223639467] [2022-11-18 21:00:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:25,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:26,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:26,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223639467] [2022-11-18 21:00:26,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223639467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:26,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131231389] [2022-11-18 21:00:26,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:00:26,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:26,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:26,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:26,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:00:26,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:00:26,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:00:26,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:00:26,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:26,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-18 21:00:26,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:26,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-18 21:00:27,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 21:00:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:00:27,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:27,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131231389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:27,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:00:27,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2022-11-18 21:00:27,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84936470] [2022-11-18 21:00:27,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:27,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:00:27,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:27,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:00:27,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:00:27,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-18 21:00:27,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 113 transitions, 317 flow. Second operand has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:27,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:27,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-18 21:00:27,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:27,866 INFO L130 PetriNetUnfolder]: 274/1168 cut-off events. [2022-11-18 21:00:27,866 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 21:00:27,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 1168 events. 274/1168 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 8131 event pairs, 78 based on Foata normal form. 0/1000 useless extension candidates. Maximal degree in co-relation 1722. Up to 378 conditions per place. [2022-11-18 21:00:27,879 INFO L137 encePairwiseOnDemand]: 99/110 looper letters, 69 selfloop transitions, 15 changer transitions 0/166 dead transitions. [2022-11-18 21:00:27,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 166 transitions, 591 flow [2022-11-18 21:00:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:00:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:00:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 921 transitions. [2022-11-18 21:00:27,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7611570247933884 [2022-11-18 21:00:27,883 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 921 transitions. [2022-11-18 21:00:27,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 921 transitions. [2022-11-18 21:00:27,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:27,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 921 transitions. [2022-11-18 21:00:27,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.72727272727273) internal successors, (921), 11 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:27,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:27,891 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:27,892 INFO L175 Difference]: Start difference. First operand has 127 places, 113 transitions, 317 flow. Second operand 11 states and 921 transitions. [2022-11-18 21:00:27,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 166 transitions, 591 flow [2022-11-18 21:00:27,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 166 transitions, 577 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-18 21:00:27,900 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 390 flow [2022-11-18 21:00:27,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=390, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2022-11-18 21:00:27,905 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 31 predicate places. [2022-11-18 21:00:27,905 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 390 flow [2022-11-18 21:00:27,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:27,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:27,907 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] [2022-11-18 21:00:27,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:28,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:28,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:28,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1818336817, now seen corresponding path program 1 times [2022-11-18 21:00:28,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:28,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516444917] [2022-11-18 21:00:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:28,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:28,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:28,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516444917] [2022-11-18 21:00:28,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516444917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:28,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209579314] [2022-11-18 21:00:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:28,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:28,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:28,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:28,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:00:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:00:28,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:28,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:28,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209579314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:00:28,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:00:28,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 21:00:28,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340668506] [2022-11-18 21:00:28,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:00:28,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:00:28,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:28,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:00:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:00:28,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-18 21:00:28,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 390 flow. Second operand has 18 states, 18 states have (on average 97.05555555555556) internal successors, (1747), 18 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:28,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:28,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-18 21:00:28,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:29,130 INFO L130 PetriNetUnfolder]: 24/629 cut-off events. [2022-11-18 21:00:29,130 INFO L131 PetriNetUnfolder]: For 149/153 co-relation queries the response was YES. [2022-11-18 21:00:29,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 629 events. 24/629 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3133 event pairs, 7 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 702. Up to 25 conditions per place. [2022-11-18 21:00:29,138 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 33 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2022-11-18 21:00:29,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 159 transitions, 660 flow [2022-11-18 21:00:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:00:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 21:00:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2032 transitions. [2022-11-18 21:00:29,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8796536796536797 [2022-11-18 21:00:29,145 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2032 transitions. [2022-11-18 21:00:29,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2032 transitions. [2022-11-18 21:00:29,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:29,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2032 transitions. [2022-11-18 21:00:29,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.76190476190476) internal successors, (2032), 21 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:29,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:29,163 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:29,163 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 390 flow. Second operand 21 states and 2032 transitions. [2022-11-18 21:00:29,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 159 transitions, 660 flow [2022-11-18 21:00:29,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 159 transitions, 656 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 21:00:29,172 INFO L231 Difference]: Finished difference. Result has 161 places, 137 transitions, 550 flow [2022-11-18 21:00:29,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=550, PETRI_PLACES=161, PETRI_TRANSITIONS=137} [2022-11-18 21:00:29,173 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 54 predicate places. [2022-11-18 21:00:29,174 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 137 transitions, 550 flow [2022-11-18 21:00:29,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 97.05555555555556) internal successors, (1747), 18 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:29,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:29,178 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:29,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:29,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:29,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:29,392 INFO L85 PathProgramCache]: Analyzing trace with hash 384223089, now seen corresponding path program 2 times [2022-11-18 21:00:29,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:29,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670804370] [2022-11-18 21:00:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:29,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:29,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:29,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670804370] [2022-11-18 21:00:29,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670804370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:29,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511991524] [2022-11-18 21:00:29,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:00:29,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:29,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:29,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:29,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:00:30,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:00:30,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:00:30,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:00:30,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:30,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-18 21:00:30,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:30,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-18 21:00:30,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 21:00:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-18 21:00:30,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:30,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511991524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:30,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:00:30,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 26 [2022-11-18 21:00:30,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976843937] [2022-11-18 21:00:30,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:30,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:00:30,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:00:30,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-11-18 21:00:30,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-18 21:00:30,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 137 transitions, 550 flow. Second operand has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:30,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:30,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-18 21:00:30,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:31,437 INFO L130 PetriNetUnfolder]: 251/1190 cut-off events. [2022-11-18 21:00:31,437 INFO L131 PetriNetUnfolder]: For 411/431 co-relation queries the response was YES. [2022-11-18 21:00:31,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 1190 events. 251/1190 cut-off events. For 411/431 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8063 event pairs, 79 based on Foata normal form. 10/1029 useless extension candidates. Maximal degree in co-relation 2041. Up to 471 conditions per place. [2022-11-18 21:00:31,450 INFO L137 encePairwiseOnDemand]: 97/110 looper letters, 54 selfloop transitions, 17 changer transitions 0/171 dead transitions. [2022-11-18 21:00:31,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 171 transitions, 808 flow [2022-11-18 21:00:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:00:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:00:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 824 transitions. [2022-11-18 21:00:31,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7490909090909091 [2022-11-18 21:00:31,455 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 824 transitions. [2022-11-18 21:00:31,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 824 transitions. [2022-11-18 21:00:31,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:31,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 824 transitions. [2022-11-18 21:00:31,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.4) internal successors, (824), 10 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:31,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:31,463 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:31,464 INFO L175 Difference]: Start difference. First operand has 161 places, 137 transitions, 550 flow. Second operand 10 states and 824 transitions. [2022-11-18 21:00:31,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 171 transitions, 808 flow [2022-11-18 21:00:31,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 171 transitions, 764 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-18 21:00:31,472 INFO L231 Difference]: Finished difference. Result has 168 places, 152 transitions, 619 flow [2022-11-18 21:00:31,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=619, PETRI_PLACES=168, PETRI_TRANSITIONS=152} [2022-11-18 21:00:31,477 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 61 predicate places. [2022-11-18 21:00:31,477 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 152 transitions, 619 flow [2022-11-18 21:00:31,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:31,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:31,478 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:31,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:31,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 21:00:31,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:31,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1422313806, now seen corresponding path program 1 times [2022-11-18 21:00:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:31,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554803385] [2022-11-18 21:00:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:32,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:32,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554803385] [2022-11-18 21:00:32,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554803385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:32,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842337565] [2022-11-18 21:00:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:32,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:32,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:32,145 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:32,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:00:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:32,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 21:00:32,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:32,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:32,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842337565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:00:32,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:00:32,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 21:00:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053021615] [2022-11-18 21:00:32,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:00:32,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 21:00:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 21:00:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 21:00:32,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-18 21:00:32,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 152 transitions, 619 flow. Second operand has 23 states, 23 states have (on average 97.30434782608695) internal successors, (2238), 23 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:32,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:32,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-18 21:00:32,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:33,439 INFO L130 PetriNetUnfolder]: 49/865 cut-off events. [2022-11-18 21:00:33,439 INFO L131 PetriNetUnfolder]: For 298/299 co-relation queries the response was YES. [2022-11-18 21:00:33,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 865 events. 49/865 cut-off events. For 298/299 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4863 event pairs, 12 based on Foata normal form. 4/747 useless extension candidates. Maximal degree in co-relation 1104. Up to 32 conditions per place. [2022-11-18 21:00:33,448 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 45 selfloop transitions, 30 changer transitions 0/195 dead transitions. [2022-11-18 21:00:33,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 195 transitions, 967 flow [2022-11-18 21:00:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 21:00:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 21:00:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2898 transitions. [2022-11-18 21:00:33,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8781818181818182 [2022-11-18 21:00:33,457 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2898 transitions. [2022-11-18 21:00:33,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2898 transitions. [2022-11-18 21:00:33,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:33,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2898 transitions. [2022-11-18 21:00:33,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 96.6) internal successors, (2898), 30 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:33,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 110.0) internal successors, (3410), 31 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:33,478 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 110.0) internal successors, (3410), 31 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:33,478 INFO L175 Difference]: Start difference. First operand has 168 places, 152 transitions, 619 flow. Second operand 30 states and 2898 transitions. [2022-11-18 21:00:33,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 195 transitions, 967 flow [2022-11-18 21:00:33,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 195 transitions, 963 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 21:00:33,487 INFO L231 Difference]: Finished difference. Result has 199 places, 162 transitions, 781 flow [2022-11-18 21:00:33,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=781, PETRI_PLACES=199, PETRI_TRANSITIONS=162} [2022-11-18 21:00:33,489 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 92 predicate places. [2022-11-18 21:00:33,489 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 162 transitions, 781 flow [2022-11-18 21:00:33,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.30434782608695) internal successors, (2238), 23 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:33,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:33,491 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] [2022-11-18 21:00:33,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:33,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b679a67-5835-43d7-b2e0-1109d9197ab3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:33,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:33,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2012827109, now seen corresponding path program 2 times [2022-11-18 21:00:33,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:33,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400020558] [2022-11-18 21:00:33,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:33,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:00:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:34,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400020558] [2022-11-18 21:00:34,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400020558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:34,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:34,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:00:34,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981213051] [2022-11-18 21:00:34,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:34,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:00:34,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:34,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:00:34,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:00:34,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-18 21:00:34,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 162 transitions, 781 flow. Second operand has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:34,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:34,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-18 21:00:34,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:35,109 INFO L130 PetriNetUnfolder]: 364/1618 cut-off events. [2022-11-18 21:00:35,109 INFO L131 PetriNetUnfolder]: For 1012/1035 co-relation queries the response was YES. [2022-11-18 21:00:35,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 1618 events. 364/1618 cut-off events. For 1012/1035 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11687 event pairs, 120 based on Foata normal form. 14/1415 useless extension candidates. Maximal degree in co-relation 3039. Up to 566 conditions per place. [2022-11-18 21:00:35,177 INFO L137 encePairwiseOnDemand]: 97/110 looper letters, 74 selfloop transitions, 24 changer transitions 0/208 dead transitions. [2022-11-18 21:00:35,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 208 transitions, 1154 flow [2022-11-18 21:00:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:00:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 21:00:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1078 transitions. [2022-11-18 21:00:35,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7538461538461538 [2022-11-18 21:00:35,182 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1078 transitions. [2022-11-18 21:00:35,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1078 transitions. [2022-11-18 21:00:35,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:35,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1078 transitions. [2022-11-18 21:00:35,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.92307692307692) internal successors, (1078), 13 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:35,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:35,194 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:35,194 INFO L175 Difference]: Start difference. First operand has 199 places, 162 transitions, 781 flow. Second operand 13 states and 1078 transitions. [2022-11-18 21:00:35,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 208 transitions, 1154 flow [2022-11-18 21:00:35,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 208 transitions, 1108 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 21:00:35,207 INFO L231 Difference]: Finished difference. Result has 196 places, 167 transitions, 838 flow [2022-11-18 21:00:35,209 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=838, PETRI_PLACES=196, PETRI_TRANSITIONS=167} [2022-11-18 21:00:35,210 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 89 predicate places. [2022-11-18 21:00:35,210 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 167 transitions, 838 flow [2022-11-18 21:00:35,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:35,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:35,211 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] [2022-11-18 21:00:35,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:00:35,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:35,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:35,212 INFO L85 PathProgramCache]: Analyzing trace with hash -114159525, now seen corresponding path program 1 times [2022-11-18 21:00:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:35,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233931966] [2022-11-18 21:00:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:35,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:00:35,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:35,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233931966] [2022-11-18 21:00:35,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233931966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:35,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:35,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:00:35,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071572811] [2022-11-18 21:00:35,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:35,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:00:35,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:35,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:00:35,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:00:35,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-11-18 21:00:35,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 167 transitions, 838 flow. Second operand has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:35,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:35,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-11-18 21:00:35,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:36,532 INFO L130 PetriNetUnfolder]: 310/1426 cut-off events. [2022-11-18 21:00:36,532 INFO L131 PetriNetUnfolder]: For 1210/1274 co-relation queries the response was YES. [2022-11-18 21:00:36,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3220 conditions, 1426 events. 310/1426 cut-off events. For 1210/1274 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10246 event pairs, 30 based on Foata normal form. 15/1270 useless extension candidates. Maximal degree in co-relation 2946. Up to 525 conditions per place. [2022-11-18 21:00:36,552 INFO L137 encePairwiseOnDemand]: 96/110 looper letters, 59 selfloop transitions, 24 changer transitions 0/195 dead transitions. [2022-11-18 21:00:36,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 195 transitions, 1164 flow [2022-11-18 21:00:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:00:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 21:00:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1062 transitions. [2022-11-18 21:00:36,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7426573426573426 [2022-11-18 21:00:36,557 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1062 transitions. [2022-11-18 21:00:36,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1062 transitions. [2022-11-18 21:00:36,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:36,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1062 transitions. [2022-11-18 21:00:36,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.6923076923077) internal successors, (1062), 13 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:36,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:36,567 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 110.0) internal successors, (1540), 14 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:36,567 INFO L175 Difference]: Start difference. First operand has 196 places, 167 transitions, 838 flow. Second operand 13 states and 1062 transitions. [2022-11-18 21:00:36,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 195 transitions, 1164 flow [2022-11-18 21:00:36,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 195 transitions, 1113 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-11-18 21:00:36,581 INFO L231 Difference]: Finished difference. Result has 203 places, 171 transitions, 903 flow [2022-11-18 21:00:36,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=903, PETRI_PLACES=203, PETRI_TRANSITIONS=171} [2022-11-18 21:00:36,582 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 96 predicate places. [2022-11-18 21:00:36,582 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 171 transitions, 903 flow [2022-11-18 21:00:36,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:36,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:36,583 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] [2022-11-18 21:00:36,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:00:36,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash -450798860, now seen corresponding path program 1 times [2022-11-18 21:00:36,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:36,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880282137] [2022-11-18 21:00:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:36,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:00:36,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880282137] [2022-11-18 21:00:36,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880282137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:36,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:36,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:00:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874403427] [2022-11-18 21:00:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:36,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:00:36,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:36,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:00:36,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:00:36,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2022-11-18 21:00:36,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 171 transitions, 903 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:36,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:36,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2022-11-18 21:00:36,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:37,063 INFO L130 PetriNetUnfolder]: 75/1136 cut-off events. [2022-11-18 21:00:37,063 INFO L131 PetriNetUnfolder]: For 773/789 co-relation queries the response was YES. [2022-11-18 21:00:37,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1136 events. 75/1136 cut-off events. For 773/789 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7419 event pairs, 19 based on Foata normal form. 6/1035 useless extension candidates. Maximal degree in co-relation 1920. Up to 124 conditions per place. [2022-11-18 21:00:37,079 INFO L137 encePairwiseOnDemand]: 103/110 looper letters, 18 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2022-11-18 21:00:37,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 178 transitions, 963 flow [2022-11-18 21:00:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:00:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:00:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2022-11-18 21:00:37,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8963636363636364 [2022-11-18 21:00:37,082 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2022-11-18 21:00:37,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2022-11-18 21:00:37,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:37,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2022-11-18 21:00:37,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,086 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,087 INFO L175 Difference]: Start difference. First operand has 203 places, 171 transitions, 903 flow. Second operand 5 states and 493 transitions. [2022-11-18 21:00:37,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 178 transitions, 963 flow [2022-11-18 21:00:37,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 178 transitions, 946 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 21:00:37,100 INFO L231 Difference]: Finished difference. Result has 204 places, 174 transitions, 918 flow [2022-11-18 21:00:37,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=918, PETRI_PLACES=204, PETRI_TRANSITIONS=174} [2022-11-18 21:00:37,102 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 97 predicate places. [2022-11-18 21:00:37,102 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 174 transitions, 918 flow [2022-11-18 21:00:37,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:37,103 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] [2022-11-18 21:00:37,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:00:37,103 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash 853234883, now seen corresponding path program 1 times [2022-11-18 21:00:37,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:37,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492967288] [2022-11-18 21:00:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:00:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:37,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492967288] [2022-11-18 21:00:37,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492967288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:37,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:37,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:00:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094605052] [2022-11-18 21:00:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:37,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:00:37,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:00:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:00:37,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 110 [2022-11-18 21:00:37,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 174 transitions, 918 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:37,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 110 [2022-11-18 21:00:37,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:37,600 INFO L130 PetriNetUnfolder]: 75/1119 cut-off events. [2022-11-18 21:00:37,600 INFO L131 PetriNetUnfolder]: For 749/755 co-relation queries the response was YES. [2022-11-18 21:00:37,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1119 events. 75/1119 cut-off events. For 749/755 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7246 event pairs, 19 based on Foata normal form. 3/1070 useless extension candidates. Maximal degree in co-relation 1977. Up to 83 conditions per place. [2022-11-18 21:00:37,614 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 18 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2022-11-18 21:00:37,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 180 transitions, 976 flow [2022-11-18 21:00:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:00:37,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:00:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 488 transitions. [2022-11-18 21:00:37,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872727272727273 [2022-11-18 21:00:37,617 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 488 transitions. [2022-11-18 21:00:37,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 488 transitions. [2022-11-18 21:00:37,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:37,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 488 transitions. [2022-11-18 21:00:37,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,622 INFO L175 Difference]: Start difference. First operand has 204 places, 174 transitions, 918 flow. Second operand 5 states and 488 transitions. [2022-11-18 21:00:37,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 180 transitions, 976 flow [2022-11-18 21:00:37,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 180 transitions, 974 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:00:37,636 INFO L231 Difference]: Finished difference. Result has 210 places, 176 transitions, 942 flow [2022-11-18 21:00:37,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=942, PETRI_PLACES=210, PETRI_TRANSITIONS=176} [2022-11-18 21:00:37,637 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 103 predicate places. [2022-11-18 21:00:37,638 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 176 transitions, 942 flow [2022-11-18 21:00:37,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:37,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:37,639 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] [2022-11-18 21:00:37,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 21:00:37,640 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1187987450, now seen corresponding path program 1 times [2022-11-18 21:00:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:37,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060309446] [2022-11-18 21:00:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:37,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:00:38,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:38,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060309446] [2022-11-18 21:00:38,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060309446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:38,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:38,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:00:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748143979] [2022-11-18 21:00:38,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:38,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:00:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:00:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:00:38,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:00:38,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 176 transitions, 942 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:38,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:38,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:00:38,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:41,410 INFO L130 PetriNetUnfolder]: 1689/4988 cut-off events. [2022-11-18 21:00:41,410 INFO L131 PetriNetUnfolder]: For 4801/4823 co-relation queries the response was YES. [2022-11-18 21:00:41,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13102 conditions, 4988 events. 1689/4988 cut-off events. For 4801/4823 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 38970 event pairs, 702 based on Foata normal form. 28/4856 useless extension candidates. Maximal degree in co-relation 12821. Up to 2271 conditions per place. [2022-11-18 21:00:41,488 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 214 selfloop transitions, 54 changer transitions 0/367 dead transitions. [2022-11-18 21:00:41,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 367 transitions, 2356 flow [2022-11-18 21:00:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 21:00:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 21:00:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1719 transitions. [2022-11-18 21:00:41,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6794466403162055 [2022-11-18 21:00:41,497 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1719 transitions. [2022-11-18 21:00:41,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1719 transitions. [2022-11-18 21:00:41,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:41,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1719 transitions. [2022-11-18 21:00:41,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 74.73913043478261) internal successors, (1719), 23 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:41,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 110.0) internal successors, (2640), 24 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:41,508 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 110.0) internal successors, (2640), 24 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:41,509 INFO L175 Difference]: Start difference. First operand has 210 places, 176 transitions, 942 flow. Second operand 23 states and 1719 transitions. [2022-11-18 21:00:41,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 367 transitions, 2356 flow [2022-11-18 21:00:41,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 367 transitions, 2352 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 21:00:41,553 INFO L231 Difference]: Finished difference. Result has 243 places, 208 transitions, 1399 flow [2022-11-18 21:00:41,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1399, PETRI_PLACES=243, PETRI_TRANSITIONS=208} [2022-11-18 21:00:41,555 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 136 predicate places. [2022-11-18 21:00:41,555 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 208 transitions, 1399 flow [2022-11-18 21:00:41,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:41,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:41,556 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] [2022-11-18 21:00:41,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:00:41,557 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:41,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:41,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1886310264, now seen corresponding path program 2 times [2022-11-18 21:00:41,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:41,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927159383] [2022-11-18 21:00:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:41,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:00:42,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:42,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927159383] [2022-11-18 21:00:42,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927159383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:42,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:42,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:00:42,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416405205] [2022-11-18 21:00:42,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:42,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:00:42,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:00:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:00:42,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:00:42,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 208 transitions, 1399 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:42,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:42,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:00:42,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:46,495 INFO L130 PetriNetUnfolder]: 2013/6075 cut-off events. [2022-11-18 21:00:46,496 INFO L131 PetriNetUnfolder]: For 12757/12766 co-relation queries the response was YES. [2022-11-18 21:00:46,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17848 conditions, 6075 events. 2013/6075 cut-off events. For 12757/12766 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 49232 event pairs, 571 based on Foata normal form. 28/5912 useless extension candidates. Maximal degree in co-relation 17550. Up to 2324 conditions per place. [2022-11-18 21:00:46,613 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 244 selfloop transitions, 93 changer transitions 0/436 dead transitions. [2022-11-18 21:00:46,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 436 transitions, 3404 flow [2022-11-18 21:00:46,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 21:00:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 21:00:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2267 transitions. [2022-11-18 21:00:46,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6648093841642229 [2022-11-18 21:00:46,619 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2267 transitions. [2022-11-18 21:00:46,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2267 transitions. [2022-11-18 21:00:46,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:46,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2267 transitions. [2022-11-18 21:00:46,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 73.12903225806451) internal successors, (2267), 31 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:46,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:46,635 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:46,635 INFO L175 Difference]: Start difference. First operand has 243 places, 208 transitions, 1399 flow. Second operand 31 states and 2267 transitions. [2022-11-18 21:00:46,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 436 transitions, 3404 flow [2022-11-18 21:00:46,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 436 transitions, 3250 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-11-18 21:00:46,720 INFO L231 Difference]: Finished difference. Result has 284 places, 260 transitions, 2200 flow [2022-11-18 21:00:46,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2200, PETRI_PLACES=284, PETRI_TRANSITIONS=260} [2022-11-18 21:00:46,721 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 177 predicate places. [2022-11-18 21:00:46,722 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 260 transitions, 2200 flow [2022-11-18 21:00:46,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:46,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:46,723 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] [2022-11-18 21:00:46,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 21:00:46,724 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1049337056, now seen corresponding path program 3 times [2022-11-18 21:00:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:46,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512089905] [2022-11-18 21:00:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:00:47,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:47,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512089905] [2022-11-18 21:00:47,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512089905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:47,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:47,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:00:47,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85520490] [2022-11-18 21:00:47,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:47,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:00:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:00:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:00:47,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:00:47,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 260 transitions, 2200 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:47,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:47,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:00:47,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:52,128 INFO L130 PetriNetUnfolder]: 2479/7029 cut-off events. [2022-11-18 21:00:52,129 INFO L131 PetriNetUnfolder]: For 27777/27799 co-relation queries the response was YES. [2022-11-18 21:00:52,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23871 conditions, 7029 events. 2479/7029 cut-off events. For 27777/27799 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 57805 event pairs, 891 based on Foata normal form. 30/6848 useless extension candidates. Maximal degree in co-relation 23552. Up to 3155 conditions per place. [2022-11-18 21:00:52,294 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 291 selfloop transitions, 103 changer transitions 0/493 dead transitions. [2022-11-18 21:00:52,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 493 transitions, 4571 flow [2022-11-18 21:00:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 21:00:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 21:00:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2145 transitions. [2022-11-18 21:00:52,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2022-11-18 21:00:52,303 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2145 transitions. [2022-11-18 21:00:52,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2145 transitions. [2022-11-18 21:00:52,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:52,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2145 transitions. [2022-11-18 21:00:52,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 73.96551724137932) internal successors, (2145), 29 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:52,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:52,321 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:52,322 INFO L175 Difference]: Start difference. First operand has 284 places, 260 transitions, 2200 flow. Second operand 29 states and 2145 transitions. [2022-11-18 21:00:52,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 493 transitions, 4571 flow [2022-11-18 21:00:52,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 493 transitions, 4350 flow, removed 47 selfloop flow, removed 8 redundant places. [2022-11-18 21:00:52,593 INFO L231 Difference]: Finished difference. Result has 322 places, 307 transitions, 3066 flow [2022-11-18 21:00:52,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3066, PETRI_PLACES=322, PETRI_TRANSITIONS=307} [2022-11-18 21:00:52,594 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 215 predicate places. [2022-11-18 21:00:52,596 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 307 transitions, 3066 flow [2022-11-18 21:00:52,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:52,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:52,597 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] [2022-11-18 21:00:52,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 21:00:52,597 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:52,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1624451152, now seen corresponding path program 4 times [2022-11-18 21:00:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:52,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659983918] [2022-11-18 21:00:52,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:52,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:00:53,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:53,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659983918] [2022-11-18 21:00:53,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659983918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:53,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:53,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:00:53,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923186310] [2022-11-18 21:00:53,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:53,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:00:53,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:53,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:00:53,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:00:53,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:00:53,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 307 transitions, 3066 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:53,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:53,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:00:53,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:58,521 INFO L130 PetriNetUnfolder]: 2864/8306 cut-off events. [2022-11-18 21:00:58,521 INFO L131 PetriNetUnfolder]: For 49179/49188 co-relation queries the response was YES. [2022-11-18 21:00:58,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30442 conditions, 8306 events. 2864/8306 cut-off events. For 49179/49188 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 70741 event pairs, 766 based on Foata normal form. 28/8092 useless extension candidates. Maximal degree in co-relation 30103. Up to 3084 conditions per place. [2022-11-18 21:00:58,667 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 343 selfloop transitions, 153 changer transitions 0/595 dead transitions. [2022-11-18 21:00:58,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 595 transitions, 6391 flow [2022-11-18 21:00:58,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 21:00:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 21:00:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2585 transitions. [2022-11-18 21:00:58,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2022-11-18 21:00:58,676 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2585 transitions. [2022-11-18 21:00:58,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2585 transitions. [2022-11-18 21:00:58,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:58,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2585 transitions. [2022-11-18 21:00:58,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 73.85714285714286) internal successors, (2585), 35 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:58,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:58,695 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:58,695 INFO L175 Difference]: Start difference. First operand has 322 places, 307 transitions, 3066 flow. Second operand 35 states and 2585 transitions. [2022-11-18 21:00:58,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 595 transitions, 6391 flow [2022-11-18 21:00:59,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 595 transitions, 6111 flow, removed 108 selfloop flow, removed 6 redundant places. [2022-11-18 21:00:59,236 INFO L231 Difference]: Finished difference. Result has 369 places, 366 transitions, 4375 flow [2022-11-18 21:00:59,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4375, PETRI_PLACES=369, PETRI_TRANSITIONS=366} [2022-11-18 21:00:59,238 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 262 predicate places. [2022-11-18 21:00:59,238 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 366 transitions, 4375 flow [2022-11-18 21:00:59,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:59,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:59,239 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] [2022-11-18 21:00:59,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 21:00:59,239 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:00:59,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1297807034, now seen corresponding path program 1 times [2022-11-18 21:00:59,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:59,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042040051] [2022-11-18 21:00:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:01:00,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:00,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042040051] [2022-11-18 21:01:00,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042040051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:00,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:00,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:01:00,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953095974] [2022-11-18 21:01:00,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:00,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:01:00,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:00,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:01:00,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:00,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:01:00,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 366 transitions, 4375 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:00,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:00,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:01:00,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:05,678 INFO L130 PetriNetUnfolder]: 3238/9353 cut-off events. [2022-11-18 21:01:05,679 INFO L131 PetriNetUnfolder]: For 75199/75199 co-relation queries the response was YES. [2022-11-18 21:01:05,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36686 conditions, 9353 events. 3238/9353 cut-off events. For 75199/75199 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 83284 event pairs, 485 based on Foata normal form. 0/9083 useless extension candidates. Maximal degree in co-relation 36326. Up to 4131 conditions per place. [2022-11-18 21:01:05,843 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 428 selfloop transitions, 174 changer transitions 0/701 dead transitions. [2022-11-18 21:01:05,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 701 transitions, 9136 flow [2022-11-18 21:01:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 21:01:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 21:01:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2294 transitions. [2022-11-18 21:01:05,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2022-11-18 21:01:05,859 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2294 transitions. [2022-11-18 21:01:05,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2294 transitions. [2022-11-18 21:01:05,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:05,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2294 transitions. [2022-11-18 21:01:05,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 74.0) internal successors, (2294), 31 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,885 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 110.0) internal successors, (3520), 32 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:05,885 INFO L175 Difference]: Start difference. First operand has 369 places, 366 transitions, 4375 flow. Second operand 31 states and 2294 transitions. [2022-11-18 21:01:05,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 701 transitions, 9136 flow [2022-11-18 21:01:06,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 701 transitions, 8432 flow, removed 235 selfloop flow, removed 11 redundant places. [2022-11-18 21:01:06,451 INFO L231 Difference]: Finished difference. Result has 407 places, 419 transitions, 5348 flow [2022-11-18 21:01:06,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=5348, PETRI_PLACES=407, PETRI_TRANSITIONS=419} [2022-11-18 21:01:06,452 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 300 predicate places. [2022-11-18 21:01:06,452 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 419 transitions, 5348 flow [2022-11-18 21:01:06,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:06,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:06,453 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] [2022-11-18 21:01:06,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 21:01:06,454 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:01:06,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash 827309012, now seen corresponding path program 5 times [2022-11-18 21:01:06,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:06,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855105743] [2022-11-18 21:01:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:06,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:01:07,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:07,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855105743] [2022-11-18 21:01:07,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855105743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:07,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:07,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:01:07,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190165725] [2022-11-18 21:01:07,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:07,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:01:07,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:01:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:07,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:01:07,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 419 transitions, 5348 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:07,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:07,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:01:07,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:13,110 INFO L130 PetriNetUnfolder]: 3731/10581 cut-off events. [2022-11-18 21:01:13,110 INFO L131 PetriNetUnfolder]: For 110362/110381 co-relation queries the response was YES. [2022-11-18 21:01:13,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45943 conditions, 10581 events. 3731/10581 cut-off events. For 110362/110381 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 94916 event pairs, 950 based on Foata normal form. 28/10481 useless extension candidates. Maximal degree in co-relation 45562. Up to 4657 conditions per place. [2022-11-18 21:01:13,280 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 402 selfloop transitions, 172 changer transitions 0/673 dead transitions. [2022-11-18 21:01:13,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 673 transitions, 8993 flow [2022-11-18 21:01:13,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 21:01:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 21:01:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2138 transitions. [2022-11-18 21:01:13,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6702194357366771 [2022-11-18 21:01:13,285 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2138 transitions. [2022-11-18 21:01:13,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2138 transitions. [2022-11-18 21:01:13,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:13,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2138 transitions. [2022-11-18 21:01:13,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 73.72413793103448) internal successors, (2138), 29 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:13,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:13,296 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 110.0) internal successors, (3300), 30 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:13,296 INFO L175 Difference]: Start difference. First operand has 407 places, 419 transitions, 5348 flow. Second operand 29 states and 2138 transitions. [2022-11-18 21:01:13,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 673 transitions, 8993 flow [2022-11-18 21:01:13,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 673 transitions, 8653 flow, removed 107 selfloop flow, removed 10 redundant places. [2022-11-18 21:01:13,890 INFO L231 Difference]: Finished difference. Result has 442 places, 471 transitions, 6754 flow [2022-11-18 21:01:13,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=5073, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6754, PETRI_PLACES=442, PETRI_TRANSITIONS=471} [2022-11-18 21:01:13,891 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 335 predicate places. [2022-11-18 21:01:13,891 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 471 transitions, 6754 flow [2022-11-18 21:01:13,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:13,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:13,892 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] [2022-11-18 21:01:13,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 21:01:13,893 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:01:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:13,893 INFO L85 PathProgramCache]: Analyzing trace with hash 727232828, now seen corresponding path program 6 times [2022-11-18 21:01:13,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896270450] [2022-11-18 21:01:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:13,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:01:14,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:14,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896270450] [2022-11-18 21:01:14,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896270450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:14,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:14,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:01:14,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336334023] [2022-11-18 21:01:14,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:14,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:01:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:01:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:14,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:01:14,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 471 transitions, 6754 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:14,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:14,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:01:14,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:21,201 INFO L130 PetriNetUnfolder]: 4048/11376 cut-off events. [2022-11-18 21:01:21,201 INFO L131 PetriNetUnfolder]: For 157952/157973 co-relation queries the response was YES. [2022-11-18 21:01:21,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52993 conditions, 11376 events. 4048/11376 cut-off events. For 157952/157973 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 103134 event pairs, 964 based on Foata normal form. 30/11276 useless extension candidates. Maximal degree in co-relation 52596. Up to 4677 conditions per place. [2022-11-18 21:01:21,439 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 419 selfloop transitions, 213 changer transitions 0/731 dead transitions. [2022-11-18 21:01:21,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 731 transitions, 10532 flow [2022-11-18 21:01:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 21:01:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 21:01:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2561 transitions. [2022-11-18 21:01:21,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6651948051948052 [2022-11-18 21:01:21,445 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2561 transitions. [2022-11-18 21:01:21,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2561 transitions. [2022-11-18 21:01:21,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:21,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2561 transitions. [2022-11-18 21:01:21,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 73.17142857142858) internal successors, (2561), 35 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:21,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:21,461 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:21,461 INFO L175 Difference]: Start difference. First operand has 442 places, 471 transitions, 6754 flow. Second operand 35 states and 2561 transitions. [2022-11-18 21:01:21,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 731 transitions, 10532 flow [2022-11-18 21:01:22,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 731 transitions, 10036 flow, removed 242 selfloop flow, removed 4 redundant places. [2022-11-18 21:01:22,737 INFO L231 Difference]: Finished difference. Result has 482 places, 515 transitions, 7959 flow [2022-11-18 21:01:22,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=6296, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7959, PETRI_PLACES=482, PETRI_TRANSITIONS=515} [2022-11-18 21:01:22,739 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 375 predicate places. [2022-11-18 21:01:22,739 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 515 transitions, 7959 flow [2022-11-18 21:01:22,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:22,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:22,741 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] [2022-11-18 21:01:22,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 21:01:22,741 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:01:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:22,742 INFO L85 PathProgramCache]: Analyzing trace with hash 680108252, now seen corresponding path program 2 times [2022-11-18 21:01:22,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:22,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080062488] [2022-11-18 21:01:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:22,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:01:23,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:23,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080062488] [2022-11-18 21:01:23,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080062488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:23,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:23,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:01:23,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112080322] [2022-11-18 21:01:23,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:23,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:01:23,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:23,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:01:23,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:23,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:01:23,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 515 transitions, 7959 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:23,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:23,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:01:23,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:31,454 INFO L130 PetriNetUnfolder]: 4371/12539 cut-off events. [2022-11-18 21:01:31,454 INFO L131 PetriNetUnfolder]: For 201328/201332 co-relation queries the response was YES. [2022-11-18 21:01:31,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59735 conditions, 12539 events. 4371/12539 cut-off events. For 201328/201332 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 118761 event pairs, 609 based on Foata normal form. 36/12423 useless extension candidates. Maximal degree in co-relation 59326. Up to 5787 conditions per place. [2022-11-18 21:01:31,791 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 586 selfloop transitions, 203 changer transitions 0/888 dead transitions. [2022-11-18 21:01:31,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 888 transitions, 13927 flow [2022-11-18 21:01:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 21:01:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 21:01:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2612 transitions. [2022-11-18 21:01:31,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6784415584415584 [2022-11-18 21:01:31,797 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2612 transitions. [2022-11-18 21:01:31,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2612 transitions. [2022-11-18 21:01:31,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:31,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2612 transitions. [2022-11-18 21:01:31,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 74.62857142857143) internal successors, (2612), 35 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:31,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:31,813 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 110.0) internal successors, (3960), 36 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:31,813 INFO L175 Difference]: Start difference. First operand has 482 places, 515 transitions, 7959 flow. Second operand 35 states and 2612 transitions. [2022-11-18 21:01:31,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 888 transitions, 13927 flow [2022-11-18 21:01:32,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 888 transitions, 13329 flow, removed 284 selfloop flow, removed 5 redundant places. [2022-11-18 21:01:32,933 INFO L231 Difference]: Finished difference. Result has 520 places, 536 transitions, 8432 flow [2022-11-18 21:01:32,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=7475, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8432, PETRI_PLACES=520, PETRI_TRANSITIONS=536} [2022-11-18 21:01:32,935 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 413 predicate places. [2022-11-18 21:01:32,935 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 536 transitions, 8432 flow [2022-11-18 21:01:32,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:32,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:32,936 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] [2022-11-18 21:01:32,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 21:01:32,936 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:01:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:32,936 INFO L85 PathProgramCache]: Analyzing trace with hash -191810130, now seen corresponding path program 7 times [2022-11-18 21:01:32,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:32,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617824811] [2022-11-18 21:01:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:32,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:01:33,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:33,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617824811] [2022-11-18 21:01:33,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617824811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:33,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:33,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:01:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241908425] [2022-11-18 21:01:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:33,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:01:33,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:01:33,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:33,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:01:33,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 536 transitions, 8432 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:33,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:33,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:01:33,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:43,117 INFO L130 PetriNetUnfolder]: 4613/13094 cut-off events. [2022-11-18 21:01:43,117 INFO L131 PetriNetUnfolder]: For 247146/247166 co-relation queries the response was YES. [2022-11-18 21:01:43,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66560 conditions, 13094 events. 4613/13094 cut-off events. For 247146/247166 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 122601 event pairs, 926 based on Foata normal form. 28/12956 useless extension candidates. Maximal degree in co-relation 66140. Up to 4677 conditions per place. [2022-11-18 21:01:43,562 INFO L137 encePairwiseOnDemand]: 92/110 looper letters, 453 selfloop transitions, 259 changer transitions 0/811 dead transitions. [2022-11-18 21:01:43,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 811 transitions, 12452 flow [2022-11-18 21:01:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 21:01:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 21:01:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2779 transitions. [2022-11-18 21:01:43,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6648325358851674 [2022-11-18 21:01:43,568 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2779 transitions. [2022-11-18 21:01:43,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2779 transitions. [2022-11-18 21:01:43,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:43,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2779 transitions. [2022-11-18 21:01:43,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 73.13157894736842) internal successors, (2779), 38 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:43,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 110.0) internal successors, (4290), 39 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:43,586 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 110.0) internal successors, (4290), 39 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:43,586 INFO L175 Difference]: Start difference. First operand has 520 places, 536 transitions, 8432 flow. Second operand 38 states and 2779 transitions. [2022-11-18 21:01:43,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 811 transitions, 12452 flow [2022-11-18 21:01:45,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 811 transitions, 11688 flow, removed 125 selfloop flow, removed 32 redundant places. [2022-11-18 21:01:45,568 INFO L231 Difference]: Finished difference. Result has 531 places, 549 transitions, 8762 flow [2022-11-18 21:01:45,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=7758, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8762, PETRI_PLACES=531, PETRI_TRANSITIONS=549} [2022-11-18 21:01:45,570 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 424 predicate places. [2022-11-18 21:01:45,570 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 549 transitions, 8762 flow [2022-11-18 21:01:45,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:45,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:45,571 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] [2022-11-18 21:01:45,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 21:01:45,572 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:01:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:45,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1004228602, now seen corresponding path program 3 times [2022-11-18 21:01:45,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:45,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860300229] [2022-11-18 21:01:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:45,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:01:46,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:46,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860300229] [2022-11-18 21:01:46,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860300229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:46,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:46,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:01:46,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714263505] [2022-11-18 21:01:46,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:46,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:01:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:01:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:46,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:01:46,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 549 transitions, 8762 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:46,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:46,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:01:46,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:01:55,919 INFO L130 PetriNetUnfolder]: 4963/14234 cut-off events. [2022-11-18 21:01:55,919 INFO L131 PetriNetUnfolder]: For 287243/287245 co-relation queries the response was YES. [2022-11-18 21:01:56,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73888 conditions, 14234 events. 4963/14234 cut-off events. For 287243/287245 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 138541 event pairs, 722 based on Foata normal form. 36/14073 useless extension candidates. Maximal degree in co-relation 73467. Up to 6640 conditions per place. [2022-11-18 21:01:56,433 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 636 selfloop transitions, 221 changer transitions 0/956 dead transitions. [2022-11-18 21:01:56,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 956 transitions, 16154 flow [2022-11-18 21:01:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 21:01:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 21:01:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2667 transitions. [2022-11-18 21:01:56,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6734848484848485 [2022-11-18 21:01:56,438 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2667 transitions. [2022-11-18 21:01:56,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2667 transitions. [2022-11-18 21:01:56,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:01:56,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2667 transitions. [2022-11-18 21:01:56,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 74.08333333333333) internal successors, (2667), 36 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:56,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 110.0) internal successors, (4070), 37 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:56,452 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 110.0) internal successors, (4070), 37 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:56,452 INFO L175 Difference]: Start difference. First operand has 531 places, 549 transitions, 8762 flow. Second operand 36 states and 2667 transitions. [2022-11-18 21:01:56,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 956 transitions, 16154 flow [2022-11-18 21:01:58,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 956 transitions, 15058 flow, removed 114 selfloop flow, removed 35 redundant places. [2022-11-18 21:01:58,341 INFO L231 Difference]: Finished difference. Result has 543 places, 583 transitions, 9189 flow [2022-11-18 21:01:58,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=7834, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9189, PETRI_PLACES=543, PETRI_TRANSITIONS=583} [2022-11-18 21:01:58,343 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 436 predicate places. [2022-11-18 21:01:58,343 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 583 transitions, 9189 flow [2022-11-18 21:01:58,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:58,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:01:58,344 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] [2022-11-18 21:01:58,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 21:01:58,344 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 21:01:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:58,345 INFO L85 PathProgramCache]: Analyzing trace with hash 703071070, now seen corresponding path program 4 times [2022-11-18 21:01:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:58,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940408539] [2022-11-18 21:01:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 21:01:59,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:59,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940408539] [2022-11-18 21:01:59,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940408539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:59,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:59,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:01:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663555848] [2022-11-18 21:01:59,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:01:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:01:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:59,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 110 [2022-11-18 21:01:59,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 583 transitions, 9189 flow. Second operand has 16 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:59,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:01:59,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 110 [2022-11-18 21:01:59,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand