./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8 --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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- 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-e04fb08 [2022-11-16 10:54:54,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:54:54,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:54:54,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:54:54,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:54:54,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:54:54,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:54:54,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:54:54,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:54:54,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:54:54,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:54:54,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:54:54,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:54:54,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:54:54,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:54:54,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:54:54,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:54:54,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:54:54,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:54:54,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:54:54,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:54:54,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:54:54,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:54:54,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:54:54,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:54:54,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:54:54,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:54:54,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:54:54,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:54:54,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:54:54,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:54:54,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:54:54,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:54:54,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:54:54,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:54:54,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:54:54,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:54:54,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:54:54,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:54:54,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:54:54,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:54:54,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 10:54:54,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:54:54,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:54:54,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:54:54,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:54:54,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:54:54,188 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:54:54,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:54:54,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:54:54,189 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:54:54,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:54:54,191 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:54:54,191 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:54:54,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:54:54,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:54:54,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:54:54,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:54:54,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:54:54,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:54:54,193 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 10:54:54,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:54:54,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:54:54,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:54:54,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:54:54,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:54:54,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:54:54,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:54:54,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:54,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:54:54,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:54:54,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:54:54,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:54:54,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:54:54,197 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:54:54,197 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:54:54,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:54:54,197 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_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-11-16 10:54:54,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:54:54,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:54:54,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:54:54,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:54:54,607 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:54:54,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-16 10:54:54,717 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/data/1292ddf32/8bd9269415434c94971d37173c239d49/FLAGcea4b1f0f [2022-11-16 10:54:55,503 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:54:55,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-16 10:54:55,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/data/1292ddf32/8bd9269415434c94971d37173c239d49/FLAGcea4b1f0f [2022-11-16 10:54:55,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/data/1292ddf32/8bd9269415434c94971d37173c239d49 [2022-11-16 10:54:55,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:54:55,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:54:55,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:55,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:54:55,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:54:55,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:55" (1/1) ... [2022-11-16 10:54:55,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1c39f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:55, skipping insertion in model container [2022-11-16 10:54:55,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:55" (1/1) ... [2022-11-16 10:54:55,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:54:55,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:54:56,498 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-16 10:54:56,514 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:56,517 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:56,518 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:56,519 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:56,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:56,595 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:54:56,658 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-16 10:54:56,671 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:56,672 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:56,673 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:56,674 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:56,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:56,778 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:54:56,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56 WrapperNode [2022-11-16 10:54:56,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:56,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:56,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:54:56,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:54:56,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,880 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 237 [2022-11-16 10:54:56,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:56,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:54:56,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:54:56,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:54:56,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,954 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:54:56,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:54:56,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:54:56,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:54:56,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (1/1) ... [2022-11-16 10:54:56,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:57,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:57,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:54:57,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:54:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:54:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 10:54:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:54:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:54:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:54:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 10:54:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:54:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:54:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 10:54:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 10:54:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 10:54:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:54:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:54:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:54:57,073 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 10:54:57,253 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:54:57,255 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:54:57,936 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:54:57,947 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:54:57,947 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-16 10:54:57,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:57 BoogieIcfgContainer [2022-11-16 10:54:57,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:54:57,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:54:57,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:54:57,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:54:57,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:54:55" (1/3) ... [2022-11-16 10:54:57,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401ac8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:57, skipping insertion in model container [2022-11-16 10:54:57,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:56" (2/3) ... [2022-11-16 10:54:57,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401ac8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:57, skipping insertion in model container [2022-11-16 10:54:57,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:57" (3/3) ... [2022-11-16 10:54:57,966 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-11-16 10:54:57,977 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:54:57,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:54:57,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 10:54:57,989 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:54:58,182 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 10:54:58,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 284 transitions, 576 flow [2022-11-16 10:54:58,420 INFO L130 PetriNetUnfolder]: 28/301 cut-off events. [2022-11-16 10:54:58,424 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-16 10:54:58,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 301 events. 28/301 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 564 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 164. Up to 4 conditions per place. [2022-11-16 10:54:58,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 284 transitions, 576 flow [2022-11-16 10:54:58,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 281 transitions, 570 flow [2022-11-16 10:54:58,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:54:58,479 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;@527ad9e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:54:58,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-16 10:54:58,500 INFO L130 PetriNetUnfolder]: 2/52 cut-off events. [2022-11-16 10:54:58,500 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:54:58,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:58,501 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] [2022-11-16 10:54:58,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:54:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:58,508 INFO L85 PathProgramCache]: Analyzing trace with hash -704164271, now seen corresponding path program 1 times [2022-11-16 10:54:58,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:58,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345102049] [2022-11-16 10:54:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:58,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:58,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:58,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533944215] [2022-11-16 10:54:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:58,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:58,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:58,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:58,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:54:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:58,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:54:58,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:58,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:58,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:58,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345102049] [2022-11-16 10:54:58,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533944215] [2022-11-16 10:54:58,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533944215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:58,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:58,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:54:58,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945379176] [2022-11-16 10:54:58,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:58,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:54:58,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:54:59,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:54:59,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 284 [2022-11-16 10:54:59,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 281 transitions, 570 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:59,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 284 [2022-11-16 10:54:59,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:59,214 INFO L130 PetriNetUnfolder]: 6/335 cut-off events. [2022-11-16 10:54:59,214 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 10:54:59,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 335 events. 6/335 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 581 event pairs, 0 based on Foata normal form. 22/324 useless extension candidates. Maximal degree in co-relation 241. Up to 17 conditions per place. [2022-11-16 10:54:59,218 INFO L137 encePairwiseOnDemand]: 259/284 looper letters, 23 selfloop transitions, 2 changer transitions 2/269 dead transitions. [2022-11-16 10:54:59,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 269 transitions, 596 flow [2022-11-16 10:54:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:54:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 10:54:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2022-11-16 10:54:59,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9284037558685446 [2022-11-16 10:54:59,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2022-11-16 10:54:59,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2022-11-16 10:54:59,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:59,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2022-11-16 10:54:59,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,263 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,266 INFO L175 Difference]: Start difference. First operand has 259 places, 281 transitions, 570 flow. Second operand 3 states and 791 transitions. [2022-11-16 10:54:59,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 269 transitions, 596 flow [2022-11-16 10:54:59,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 269 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:54:59,302 INFO L231 Difference]: Finished difference. Result has 261 places, 259 transitions, 540 flow [2022-11-16 10:54:59,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=261, PETRI_TRANSITIONS=259} [2022-11-16 10:54:59,311 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 2 predicate places. [2022-11-16 10:54:59,312 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 259 transitions, 540 flow [2022-11-16 10:54:59,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:59,320 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] [2022-11-16 10:54:59,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:59,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 10:54:59,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:54:59,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash -354250376, now seen corresponding path program 1 times [2022-11-16 10:54:59,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:59,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475928236] [2022-11-16 10:54:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:59,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:59,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:59,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475928236] [2022-11-16 10:54:59,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475928236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:59,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:59,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:59,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263159315] [2022-11-16 10:54:59,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:59,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:54:59,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:54:59,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:54:59,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 284 [2022-11-16 10:54:59,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 259 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:59,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 284 [2022-11-16 10:54:59,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:59,945 INFO L130 PetriNetUnfolder]: 6/417 cut-off events. [2022-11-16 10:54:59,945 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-16 10:54:59,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 417 events. 6/417 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 795 event pairs, 0 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 338. Up to 22 conditions per place. [2022-11-16 10:54:59,949 INFO L137 encePairwiseOnDemand]: 279/284 looper letters, 17 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-11-16 10:54:59,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 265 transitions, 590 flow [2022-11-16 10:54:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:54:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 10:54:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2022-11-16 10:54:59,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9061032863849765 [2022-11-16 10:54:59,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2022-11-16 10:54:59,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2022-11-16 10:54:59,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:59,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2022-11-16 10:54:59,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,966 INFO L175 Difference]: Start difference. First operand has 261 places, 259 transitions, 540 flow. Second operand 3 states and 772 transitions. [2022-11-16 10:54:59,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 265 transitions, 590 flow [2022-11-16 10:54:59,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 265 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:59,981 INFO L231 Difference]: Finished difference. Result has 261 places, 260 transitions, 554 flow [2022-11-16 10:54:59,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=261, PETRI_TRANSITIONS=260} [2022-11-16 10:54:59,984 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 2 predicate places. [2022-11-16 10:54:59,984 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 260 transitions, 554 flow [2022-11-16 10:54:59,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:59,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:59,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:54:59,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:54:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash 822957862, now seen corresponding path program 1 times [2022-11-16 10:54:59,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:59,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428199845] [2022-11-16 10:54:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:59,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:00,065 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:00,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812341590] [2022-11-16 10:55:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:00,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:00,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:00,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:00,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:55:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:00,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:55:00,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:00,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:00,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428199845] [2022-11-16 10:55:00,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:00,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812341590] [2022-11-16 10:55:00,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812341590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:00,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:00,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:55:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000144118] [2022-11-16 10:55:00,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:00,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:55:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:55:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:00,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-16 10:55:00,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 260 transitions, 554 flow. Second operand has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:00,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-16 10:55:00,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:00,723 INFO L130 PetriNetUnfolder]: 6/417 cut-off events. [2022-11-16 10:55:00,723 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-16 10:55:00,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 417 events. 6/417 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 802 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 367. Up to 30 conditions per place. [2022-11-16 10:55:00,726 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 23 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-16 10:55:00,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 269 transitions, 628 flow [2022-11-16 10:55:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:55:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1254 transitions. [2022-11-16 10:55:00,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830985915492958 [2022-11-16 10:55:00,732 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1254 transitions. [2022-11-16 10:55:00,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1254 transitions. [2022-11-16 10:55:00,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:00,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1254 transitions. [2022-11-16 10:55:00,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.8) internal successors, (1254), 5 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,742 INFO L175 Difference]: Start difference. First operand has 261 places, 260 transitions, 554 flow. Second operand 5 states and 1254 transitions. [2022-11-16 10:55:00,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 269 transitions, 628 flow [2022-11-16 10:55:00,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:55:00,750 INFO L231 Difference]: Finished difference. Result has 268 places, 263 transitions, 586 flow [2022-11-16 10:55:00,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=268, PETRI_TRANSITIONS=263} [2022-11-16 10:55:00,753 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 9 predicate places. [2022-11-16 10:55:00,753 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 263 transitions, 586 flow [2022-11-16 10:55:00,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:00,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:00,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:00,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:00,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:00,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:00,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:00,970 INFO L85 PathProgramCache]: Analyzing trace with hash -258109504, now seen corresponding path program 1 times [2022-11-16 10:55:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:00,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314857666] [2022-11-16 10:55:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:00,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:01,031 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:01,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857385719] [2022-11-16 10:55:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:01,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:01,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:01,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:01,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:55:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:01,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:55:01,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:01,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:01,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:01,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314857666] [2022-11-16 10:55:01,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:01,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857385719] [2022-11-16 10:55:01,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857385719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:01,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:01,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:55:01,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708462737] [2022-11-16 10:55:01,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:01,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:55:01,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:01,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:55:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:01,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-16 10:55:01,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 263 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:01,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-16 10:55:01,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:01,464 INFO L130 PetriNetUnfolder]: 6/413 cut-off events. [2022-11-16 10:55:01,464 INFO L131 PetriNetUnfolder]: For 36/37 co-relation queries the response was YES. [2022-11-16 10:55:01,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 413 events. 6/413 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 787 event pairs, 0 based on Foata normal form. 4/395 useless extension candidates. Maximal degree in co-relation 379. Up to 28 conditions per place. [2022-11-16 10:55:01,467 INFO L137 encePairwiseOnDemand]: 280/284 looper letters, 16 selfloop transitions, 5 changer transitions 0/262 dead transitions. [2022-11-16 10:55:01,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 262 transitions, 626 flow [2022-11-16 10:55:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:55:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:55:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2022-11-16 10:55:01,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8794014084507042 [2022-11-16 10:55:01,471 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2022-11-16 10:55:01,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2022-11-16 10:55:01,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:01,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2022-11-16 10:55:01,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,479 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,479 INFO L175 Difference]: Start difference. First operand has 268 places, 263 transitions, 586 flow. Second operand 4 states and 999 transitions. [2022-11-16 10:55:01,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 262 transitions, 626 flow [2022-11-16 10:55:01,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 262 transitions, 617 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:55:01,486 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 588 flow [2022-11-16 10:55:01,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2022-11-16 10:55:01,488 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 9 predicate places. [2022-11-16 10:55:01,488 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 588 flow [2022-11-16 10:55:01,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:01,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:01,489 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:01,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:01,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:01,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:01,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1491666954, now seen corresponding path program 1 times [2022-11-16 10:55:01,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:01,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356708176] [2022-11-16 10:55:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:01,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:01,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:01,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637550994] [2022-11-16 10:55:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:01,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:01,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:01,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:01,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:55:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:01,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:55:01,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:02,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:02,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:02,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356708176] [2022-11-16 10:55:02,151 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:02,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637550994] [2022-11-16 10:55:02,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637550994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:02,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:55:02,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 10:55:02,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293196672] [2022-11-16 10:55:02,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:02,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:55:02,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:55:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:55:02,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-16 10:55:02,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 247.875) internal successors, (1983), 8 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:02,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-16 10:55:02,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:02,419 INFO L130 PetriNetUnfolder]: 6/499 cut-off events. [2022-11-16 10:55:02,419 INFO L131 PetriNetUnfolder]: For 52/53 co-relation queries the response was YES. [2022-11-16 10:55:02,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 499 events. 6/499 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 653 event pairs, 0 based on Foata normal form. 6/483 useless extension candidates. Maximal degree in co-relation 506. Up to 22 conditions per place. [2022-11-16 10:55:02,422 INFO L137 encePairwiseOnDemand]: 277/284 looper letters, 29 selfloop transitions, 10 changer transitions 0/280 dead transitions. [2022-11-16 10:55:02,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 280 transitions, 720 flow [2022-11-16 10:55:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:55:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:55:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2246 transitions. [2022-11-16 10:55:02,429 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.878716744913928 [2022-11-16 10:55:02,429 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2246 transitions. [2022-11-16 10:55:02,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2246 transitions. [2022-11-16 10:55:02,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:02,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2246 transitions. [2022-11-16 10:55:02,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 249.55555555555554) internal successors, (2246), 9 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,445 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,445 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 588 flow. Second operand 9 states and 2246 transitions. [2022-11-16 10:55:02,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 280 transitions, 720 flow [2022-11-16 10:55:02,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 280 transitions, 707 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:55:02,455 INFO L231 Difference]: Finished difference. Result has 279 places, 266 transitions, 638 flow [2022-11-16 10:55:02,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=638, PETRI_PLACES=279, PETRI_TRANSITIONS=266} [2022-11-16 10:55:02,459 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 20 predicate places. [2022-11-16 10:55:02,460 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 266 transitions, 638 flow [2022-11-16 10:55:02,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 247.875) internal successors, (1983), 8 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:02,463 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:02,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:02,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:02,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash -831855898, now seen corresponding path program 1 times [2022-11-16 10:55:02,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:02,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378956154] [2022-11-16 10:55:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:02,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:02,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:02,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661084324] [2022-11-16 10:55:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:02,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:02,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:02,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:02,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 10:55:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:03,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:55:03,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:03,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378956154] [2022-11-16 10:55:03,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661084324] [2022-11-16 10:55:03,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661084324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:03,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:55:03,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 10:55:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312256309] [2022-11-16 10:55:03,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:03,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 10:55:03,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 10:55:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:55:03,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-16 10:55:03,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 266 transitions, 638 flow. Second operand has 14 states, 14 states have (on average 248.64285714285714) internal successors, (3481), 14 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:03,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:03,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-16 10:55:03,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:04,025 INFO L130 PetriNetUnfolder]: 11/790 cut-off events. [2022-11-16 10:55:04,025 INFO L131 PetriNetUnfolder]: For 134/136 co-relation queries the response was YES. [2022-11-16 10:55:04,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 790 events. 11/790 cut-off events. For 134/136 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1838 event pairs, 0 based on Foata normal form. 4/750 useless extension candidates. Maximal degree in co-relation 765. Up to 19 conditions per place. [2022-11-16 10:55:04,032 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 37 selfloop transitions, 16 changer transitions 0/294 dead transitions. [2022-11-16 10:55:04,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 294 transitions, 854 flow [2022-11-16 10:55:04,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 10:55:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 10:55:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3730 transitions. [2022-11-16 10:55:04,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755868544600939 [2022-11-16 10:55:04,047 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3730 transitions. [2022-11-16 10:55:04,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3730 transitions. [2022-11-16 10:55:04,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:04,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3730 transitions. [2022-11-16 10:55:04,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 248.66666666666666) internal successors, (3730), 15 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:04,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:04,070 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:04,070 INFO L175 Difference]: Start difference. First operand has 279 places, 266 transitions, 638 flow. Second operand 15 states and 3730 transitions. [2022-11-16 10:55:04,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 294 transitions, 854 flow [2022-11-16 10:55:04,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 294 transitions, 836 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 10:55:04,082 INFO L231 Difference]: Finished difference. Result has 288 places, 270 transitions, 687 flow [2022-11-16 10:55:04,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=687, PETRI_PLACES=288, PETRI_TRANSITIONS=270} [2022-11-16 10:55:04,086 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 29 predicate places. [2022-11-16 10:55:04,086 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 270 transitions, 687 flow [2022-11-16 10:55:04,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.64285714285714) internal successors, (3481), 14 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:04,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:04,089 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:04,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:04,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 10:55:04,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:04,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:04,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1801372618, now seen corresponding path program 2 times [2022-11-16 10:55:04,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:04,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462016040] [2022-11-16 10:55:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:04,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:04,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:04,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516374617] [2022-11-16 10:55:04,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:04,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:04,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:04,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:04,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 10:55:04,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:55:04,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:04,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:55:04,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-16 10:55:04,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:04,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:04,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462016040] [2022-11-16 10:55:04,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:04,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516374617] [2022-11-16 10:55:04,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516374617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:04,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:04,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:55:04,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153446321] [2022-11-16 10:55:04,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:04,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:55:04,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:04,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:55:04,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:04,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-16 10:55:04,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 270 transitions, 687 flow. Second operand has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:04,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:04,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-16 10:55:04,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:05,098 INFO L130 PetriNetUnfolder]: 11/790 cut-off events. [2022-11-16 10:55:05,098 INFO L131 PetriNetUnfolder]: For 135/137 co-relation queries the response was YES. [2022-11-16 10:55:05,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 790 events. 11/790 cut-off events. For 135/137 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1836 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 771. Up to 50 conditions per place. [2022-11-16 10:55:05,103 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 29 selfloop transitions, 5 changer transitions 0/282 dead transitions. [2022-11-16 10:55:05,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 282 transitions, 779 flow [2022-11-16 10:55:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:55:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1245 transitions. [2022-11-16 10:55:05,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8767605633802817 [2022-11-16 10:55:05,107 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1245 transitions. [2022-11-16 10:55:05,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1245 transitions. [2022-11-16 10:55:05,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:05,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1245 transitions. [2022-11-16 10:55:05,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:05,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:05,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:05,116 INFO L175 Difference]: Start difference. First operand has 288 places, 270 transitions, 687 flow. Second operand 5 states and 1245 transitions. [2022-11-16 10:55:05,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 282 transitions, 779 flow [2022-11-16 10:55:05,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 282 transitions, 720 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-16 10:55:05,124 INFO L231 Difference]: Finished difference. Result has 283 places, 273 transitions, 662 flow [2022-11-16 10:55:05,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=662, PETRI_PLACES=283, PETRI_TRANSITIONS=273} [2022-11-16 10:55:05,126 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 24 predicate places. [2022-11-16 10:55:05,126 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 273 transitions, 662 flow [2022-11-16 10:55:05,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:05,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:05,127 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:05,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:05,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 10:55:05,334 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:05,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash 7976934, now seen corresponding path program 1 times [2022-11-16 10:55:05,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:05,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573203969] [2022-11-16 10:55:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:05,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:05,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259814396] [2022-11-16 10:55:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:05,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:05,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:05,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:05,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 10:55:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:05,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:55:05,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:05,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:06,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:06,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573203969] [2022-11-16 10:55:06,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:06,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259814396] [2022-11-16 10:55:06,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259814396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:06,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:55:06,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 10:55:06,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702221847] [2022-11-16 10:55:06,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:06,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 10:55:06,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:06,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 10:55:06,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 10:55:06,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-16 10:55:06,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 273 transitions, 662 flow. Second operand has 16 states, 16 states have (on average 248.6875) internal successors, (3979), 16 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:06,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:06,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-16 10:55:06,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:06,950 INFO L130 PetriNetUnfolder]: 6/833 cut-off events. [2022-11-16 10:55:06,951 INFO L131 PetriNetUnfolder]: For 122/123 co-relation queries the response was YES. [2022-11-16 10:55:06,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 833 events. 6/833 cut-off events. For 122/123 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 669 event pairs, 0 based on Foata normal form. 8/823 useless extension candidates. Maximal degree in co-relation 1008. Up to 20 conditions per place. [2022-11-16 10:55:06,954 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 60 selfloop transitions, 22 changer transitions 0/326 dead transitions. [2022-11-16 10:55:06,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 326 transitions, 1019 flow [2022-11-16 10:55:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 10:55:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 10:55:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5230 transitions. [2022-11-16 10:55:06,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769282360831656 [2022-11-16 10:55:06,966 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5230 transitions. [2022-11-16 10:55:06,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5230 transitions. [2022-11-16 10:55:06,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:06,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5230 transitions. [2022-11-16 10:55:06,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 249.04761904761904) internal successors, (5230), 21 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:06,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:06,993 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:06,993 INFO L175 Difference]: Start difference. First operand has 283 places, 273 transitions, 662 flow. Second operand 21 states and 5230 transitions. [2022-11-16 10:55:06,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 326 transitions, 1019 flow [2022-11-16 10:55:06,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 326 transitions, 1009 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-16 10:55:07,001 INFO L231 Difference]: Finished difference. Result has 307 places, 282 transitions, 772 flow [2022-11-16 10:55:07,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=772, PETRI_PLACES=307, PETRI_TRANSITIONS=282} [2022-11-16 10:55:07,003 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 48 predicate places. [2022-11-16 10:55:07,003 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 282 transitions, 772 flow [2022-11-16 10:55:07,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 248.6875) internal successors, (3979), 16 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:07,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:07,005 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:07,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:07,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 10:55:07,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:07,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1012891750, now seen corresponding path program 2 times [2022-11-16 10:55:07,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:07,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442937620] [2022-11-16 10:55:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:07,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:07,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:07,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764985023] [2022-11-16 10:55:07,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:07,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:07,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:07,297 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:07,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 10:55:07,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:55:07,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:07,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:55:07,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-16 10:55:08,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:08,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:08,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442937620] [2022-11-16 10:55:08,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:08,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764985023] [2022-11-16 10:55:08,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764985023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:08,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:08,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:55:08,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228132231] [2022-11-16 10:55:08,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:08,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:55:08,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:55:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:55:08,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-16 10:55:08,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 282 transitions, 772 flow. Second operand has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:08,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:08,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-16 10:55:08,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:08,518 INFO L130 PetriNetUnfolder]: 6/831 cut-off events. [2022-11-16 10:55:08,519 INFO L131 PetriNetUnfolder]: For 186/187 co-relation queries the response was YES. [2022-11-16 10:55:08,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 831 events. 6/831 cut-off events. For 186/187 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 662 event pairs, 0 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 1009. Up to 80 conditions per place. [2022-11-16 10:55:08,523 INFO L137 encePairwiseOnDemand]: 280/284 looper letters, 18 selfloop transitions, 5 changer transitions 0/280 dead transitions. [2022-11-16 10:55:08,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 280 transitions, 808 flow [2022-11-16 10:55:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:55:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:55:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 989 transitions. [2022-11-16 10:55:08,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8705985915492958 [2022-11-16 10:55:08,527 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 989 transitions. [2022-11-16 10:55:08,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 989 transitions. [2022-11-16 10:55:08,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:08,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 989 transitions. [2022-11-16 10:55:08,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:08,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:08,534 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:08,535 INFO L175 Difference]: Start difference. First operand has 307 places, 282 transitions, 772 flow. Second operand 4 states and 989 transitions. [2022-11-16 10:55:08,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 280 transitions, 808 flow [2022-11-16 10:55:08,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 280 transitions, 785 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 10:55:08,543 INFO L231 Difference]: Finished difference. Result has 298 places, 280 transitions, 749 flow [2022-11-16 10:55:08,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=749, PETRI_PLACES=298, PETRI_TRANSITIONS=280} [2022-11-16 10:55:08,545 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 39 predicate places. [2022-11-16 10:55:08,545 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 280 transitions, 749 flow [2022-11-16 10:55:08,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:08,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:08,546 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:08,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:08,753 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:08,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1575946510, now seen corresponding path program 1 times [2022-11-16 10:55:08,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:08,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818377948] [2022-11-16 10:55:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:08,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:08,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:08,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509759621] [2022-11-16 10:55:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:08,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:08,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:08,848 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:08,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 10:55:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:09,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 10:55:09,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 10:55:10,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 10:55:11,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818377948] [2022-11-16 10:55:11,136 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509759621] [2022-11-16 10:55:11,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509759621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:11,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:55:11,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 10:55:11,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537806107] [2022-11-16 10:55:11,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:11,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 10:55:11,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 10:55:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-16 10:55:11,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-16 10:55:11,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 280 transitions, 749 flow. Second operand has 32 states, 32 states have (on average 249.4375) internal successors, (7982), 32 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:11,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:11,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-16 10:55:11,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:12,692 INFO L130 PetriNetUnfolder]: 6/1503 cut-off events. [2022-11-16 10:55:12,692 INFO L131 PetriNetUnfolder]: For 731/732 co-relation queries the response was YES. [2022-11-16 10:55:12,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 1503 events. 6/1503 cut-off events. For 731/732 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 702 event pairs, 0 based on Foata normal form. 16/1501 useless extension candidates. Maximal degree in co-relation 2123. Up to 38 conditions per place. [2022-11-16 10:55:12,699 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 124 selfloop transitions, 46 changer transitions 0/412 dead transitions. [2022-11-16 10:55:12,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 412 transitions, 1685 flow [2022-11-16 10:55:12,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 10:55:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 10:55:12,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 11202 transitions. [2022-11-16 10:55:12,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765258215962441 [2022-11-16 10:55:12,724 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 11202 transitions. [2022-11-16 10:55:12,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 11202 transitions. [2022-11-16 10:55:12,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:12,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 11202 transitions. [2022-11-16 10:55:12,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 248.93333333333334) internal successors, (11202), 45 states have internal predecessors, (11202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:12,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 284.0) internal successors, (13064), 46 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:12,781 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 284.0) internal successors, (13064), 46 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:12,781 INFO L175 Difference]: Start difference. First operand has 298 places, 280 transitions, 749 flow. Second operand 45 states and 11202 transitions. [2022-11-16 10:55:12,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 412 transitions, 1685 flow [2022-11-16 10:55:12,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 412 transitions, 1675 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:55:12,795 INFO L231 Difference]: Finished difference. Result has 348 places, 305 transitions, 1062 flow [2022-11-16 10:55:12,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1062, PETRI_PLACES=348, PETRI_TRANSITIONS=305} [2022-11-16 10:55:12,798 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 89 predicate places. [2022-11-16 10:55:12,798 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 305 transitions, 1062 flow [2022-11-16 10:55:12,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 249.4375) internal successors, (7982), 32 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:12,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:12,801 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:12,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:13,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:13,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:13,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:13,016 INFO L85 PathProgramCache]: Analyzing trace with hash -162326514, now seen corresponding path program 2 times [2022-11-16 10:55:13,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:13,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073614735] [2022-11-16 10:55:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:13,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:13,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:13,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465982088] [2022-11-16 10:55:13,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:13,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:13,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:13,173 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:13,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 10:55:14,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:55:14,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:14,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 2828 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 10:55:14,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 10:55:15,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 10:55:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073614735] [2022-11-16 10:55:18,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465982088] [2022-11-16 10:55:18,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465982088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:18,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:55:18,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-16 10:55:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499728760] [2022-11-16 10:55:18,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:18,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 10:55:18,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:18,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 10:55:18,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 10:55:18,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-16 10:55:18,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 305 transitions, 1062 flow. Second operand has 61 states, 61 states have (on average 249.54098360655738) internal successors, (15222), 61 states have internal predecessors, (15222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:18,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:18,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-16 10:55:18,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:22,554 INFO L130 PetriNetUnfolder]: 6/2763 cut-off events. [2022-11-16 10:55:22,554 INFO L131 PetriNetUnfolder]: For 4819/4820 co-relation queries the response was YES. [2022-11-16 10:55:22,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4604 conditions, 2763 events. 6/2763 cut-off events. For 4819/4820 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 778 event pairs, 0 based on Foata normal form. 30/2775 useless extension candidates. Maximal degree in co-relation 4454. Up to 98 conditions per place. [2022-11-16 10:55:22,562 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 244 selfloop transitions, 91 changer transitions 0/577 dead transitions. [2022-11-16 10:55:22,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 577 transitions, 3174 flow [2022-11-16 10:55:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 10:55:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-16 10:55:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 22399 transitions. [2022-11-16 10:55:22,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763302034428795 [2022-11-16 10:55:22,596 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 22399 transitions. [2022-11-16 10:55:22,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 22399 transitions. [2022-11-16 10:55:22,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:22,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 22399 transitions. [2022-11-16 10:55:22,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 248.87777777777777) internal successors, (22399), 90 states have internal predecessors, (22399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:22,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 284.0) internal successors, (25844), 91 states have internal predecessors, (25844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:22,692 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 284.0) internal successors, (25844), 91 states have internal predecessors, (25844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:22,693 INFO L175 Difference]: Start difference. First operand has 348 places, 305 transitions, 1062 flow. Second operand 90 states and 22399 transitions. [2022-11-16 10:55:22,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 577 transitions, 3174 flow [2022-11-16 10:55:22,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 577 transitions, 3087 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-16 10:55:22,717 INFO L231 Difference]: Finished difference. Result has 435 places, 351 transitions, 1694 flow [2022-11-16 10:55:22,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1694, PETRI_PLACES=435, PETRI_TRANSITIONS=351} [2022-11-16 10:55:22,719 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 176 predicate places. [2022-11-16 10:55:22,719 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 351 transitions, 1694 flow [2022-11-16 10:55:22,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 249.54098360655738) internal successors, (15222), 61 states have internal predecessors, (15222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:22,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:22,724 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:22,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:22,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:22,936 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -867060484, now seen corresponding path program 3 times [2022-11-16 10:55:22,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:22,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578661390] [2022-11-16 10:55:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:22,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:23,227 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:23,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614565556] [2022-11-16 10:55:23,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:55:23,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:23,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:23,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:23,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 10:55:24,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 10:55:24,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:24,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 10:55:24,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-16 10:55:24,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-16 10:55:25,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:25,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578661390] [2022-11-16 10:55:25,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:25,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614565556] [2022-11-16 10:55:25,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614565556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:25,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:55:25,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-11-16 10:55:25,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240073109] [2022-11-16 10:55:25,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:25,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 10:55:25,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:25,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 10:55:25,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-16 10:55:25,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 284 [2022-11-16 10:55:25,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 351 transitions, 1694 flow. Second operand has 11 states, 11 states have (on average 241.63636363636363) internal successors, (2658), 11 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:25,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:25,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 284 [2022-11-16 10:55:25,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:27,884 INFO L130 PetriNetUnfolder]: 6/2734 cut-off events. [2022-11-16 10:55:27,884 INFO L131 PetriNetUnfolder]: For 3187/3188 co-relation queries the response was YES. [2022-11-16 10:55:27,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 2734 events. 6/2734 cut-off events. For 3187/3188 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 686 event pairs, 0 based on Foata normal form. 29/2745 useless extension candidates. Maximal degree in co-relation 4602. Up to 310 conditions per place. [2022-11-16 10:55:27,894 INFO L137 encePairwiseOnDemand]: 275/284 looper letters, 39 selfloop transitions, 103 changer transitions 0/374 dead transitions. [2022-11-16 10:55:27,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 374 transitions, 2034 flow [2022-11-16 10:55:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:55:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 10:55:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3136 transitions. [2022-11-16 10:55:27,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8494041170097508 [2022-11-16 10:55:27,898 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3136 transitions. [2022-11-16 10:55:27,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3136 transitions. [2022-11-16 10:55:27,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:27,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3136 transitions. [2022-11-16 10:55:27,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 241.23076923076923) internal successors, (3136), 13 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:27,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 284.0) internal successors, (3976), 14 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:27,913 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 284.0) internal successors, (3976), 14 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:27,913 INFO L175 Difference]: Start difference. First operand has 435 places, 351 transitions, 1694 flow. Second operand 13 states and 3136 transitions. [2022-11-16 10:55:27,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 374 transitions, 2034 flow [2022-11-16 10:55:27,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 374 transitions, 1913 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-16 10:55:27,944 INFO L231 Difference]: Finished difference. Result has 406 places, 353 transitions, 1830 flow [2022-11-16 10:55:27,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1830, PETRI_PLACES=406, PETRI_TRANSITIONS=353} [2022-11-16 10:55:27,945 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 147 predicate places. [2022-11-16 10:55:27,946 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 353 transitions, 1830 flow [2022-11-16 10:55:27,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.63636363636363) internal successors, (2658), 11 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:27,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:27,947 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:27,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:28,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:28,154 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:28,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1109070675, now seen corresponding path program 1 times [2022-11-16 10:55:28,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:28,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501623478] [2022-11-16 10:55:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:28,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:28,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557855516] [2022-11-16 10:55:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:28,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:28,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:28,361 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:28,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 10:55:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:34,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 5334 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:55:34,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19200 backedges. 1335 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 10:55:36,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:36,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501623478] [2022-11-16 10:55:36,481 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557855516] [2022-11-16 10:55:36,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557855516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:36,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:36,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 10:55:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682658806] [2022-11-16 10:55:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:36,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 10:55:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 10:55:36,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:55:36,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 284 [2022-11-16 10:55:36,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 353 transitions, 1830 flow. Second operand has 9 states, 9 states have (on average 236.33333333333334) internal successors, (2127), 9 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:36,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:36,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 284 [2022-11-16 10:55:36,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:38,610 INFO L130 PetriNetUnfolder]: 9/2899 cut-off events. [2022-11-16 10:55:38,610 INFO L131 PetriNetUnfolder]: For 3884/3886 co-relation queries the response was YES. [2022-11-16 10:55:38,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5069 conditions, 2899 events. 9/2899 cut-off events. For 3884/3886 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 890 event pairs, 0 based on Foata normal form. 29/2892 useless extension candidates. Maximal degree in co-relation 4778. Up to 307 conditions per place. [2022-11-16 10:55:38,617 INFO L137 encePairwiseOnDemand]: 274/284 looper letters, 141 selfloop transitions, 105 changer transitions 0/473 dead transitions. [2022-11-16 10:55:38,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 473 transitions, 3624 flow [2022-11-16 10:55:38,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:55:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 10:55:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3079 transitions. [2022-11-16 10:55:38,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8339653304442037 [2022-11-16 10:55:38,622 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3079 transitions. [2022-11-16 10:55:38,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3079 transitions. [2022-11-16 10:55:38,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:38,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3079 transitions. [2022-11-16 10:55:38,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 236.84615384615384) internal successors, (3079), 13 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:38,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 284.0) internal successors, (3976), 14 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:38,634 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 284.0) internal successors, (3976), 14 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:38,634 INFO L175 Difference]: Start difference. First operand has 406 places, 353 transitions, 1830 flow. Second operand 13 states and 3079 transitions. [2022-11-16 10:55:38,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 473 transitions, 3624 flow [2022-11-16 10:55:38,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 473 transitions, 3487 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 10:55:38,669 INFO L231 Difference]: Finished difference. Result has 416 places, 449 transitions, 3470 flow [2022-11-16 10:55:38,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3470, PETRI_PLACES=416, PETRI_TRANSITIONS=449} [2022-11-16 10:55:38,670 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 157 predicate places. [2022-11-16 10:55:38,671 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 449 transitions, 3470 flow [2022-11-16 10:55:38,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 236.33333333333334) internal successors, (2127), 9 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:38,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:38,672 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:38,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-16 10:55:38,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 10:55:38,874 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2019109336, now seen corresponding path program 1 times [2022-11-16 10:55:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:38,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697001945] [2022-11-16 10:55:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:38,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:39,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:39,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7588509] [2022-11-16 10:55:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:39,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:39,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:39,069 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:39,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 10:55:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:40,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 5270 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:55:40,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 10:55:42,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 10:55:45,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:45,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697001945] [2022-11-16 10:55:45,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:45,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7588509] [2022-11-16 10:55:45,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7588509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:45,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:55:45,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 10:55:45,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468034312] [2022-11-16 10:55:45,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:45,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:55:45,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:45,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:55:45,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:55:45,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-16 10:55:45,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 449 transitions, 3470 flow. Second operand has 8 states, 8 states have (on average 245.75) internal successors, (1966), 8 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:45,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:45,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-16 10:55:45,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:48,738 INFO L130 PetriNetUnfolder]: 7/3953 cut-off events. [2022-11-16 10:55:48,739 INFO L131 PetriNetUnfolder]: For 7848/7849 co-relation queries the response was YES. [2022-11-16 10:55:48,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7117 conditions, 3953 events. 7/3953 cut-off events. For 7848/7849 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 262 event pairs, 0 based on Foata normal form. 3/3938 useless extension candidates. Maximal degree in co-relation 6943. Up to 144 conditions per place. [2022-11-16 10:55:48,746 INFO L137 encePairwiseOnDemand]: 277/284 looper letters, 34 selfloop transitions, 9 changer transitions 0/470 dead transitions. [2022-11-16 10:55:48,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 470 transitions, 3620 flow [2022-11-16 10:55:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:55:48,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:55:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2224 transitions. [2022-11-16 10:55:48,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8701095461658842 [2022-11-16 10:55:48,749 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2224 transitions. [2022-11-16 10:55:48,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2224 transitions. [2022-11-16 10:55:48,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:48,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2224 transitions. [2022-11-16 10:55:48,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 247.11111111111111) internal successors, (2224), 9 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:48,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:48,756 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:48,757 INFO L175 Difference]: Start difference. First operand has 416 places, 449 transitions, 3470 flow. Second operand 9 states and 2224 transitions. [2022-11-16 10:55:48,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 470 transitions, 3620 flow [2022-11-16 10:55:48,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 470 transitions, 3598 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-16 10:55:48,816 INFO L231 Difference]: Finished difference. Result has 422 places, 453 transitions, 3517 flow [2022-11-16 10:55:48,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3452, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3517, PETRI_PLACES=422, PETRI_TRANSITIONS=453} [2022-11-16 10:55:48,818 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 163 predicate places. [2022-11-16 10:55:48,818 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 453 transitions, 3517 flow [2022-11-16 10:55:48,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 245.75) internal successors, (1966), 8 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:48,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:48,820 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:48,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-16 10:55:49,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 10:55:49,044 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:55:49,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:49,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2118919182, now seen corresponding path program 1 times [2022-11-16 10:55:49,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:49,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385035452] [2022-11-16 10:55:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:49,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:49,596 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:49,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748288352] [2022-11-16 10:55:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:49,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:49,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:49,603 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:49,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 10:55:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:53,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 15238 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:55:54,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 10:56:00,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 10:56:07,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385035452] [2022-11-16 10:56:07,936 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:56:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748288352] [2022-11-16 10:56:07,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748288352] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:07,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:56:07,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 10:56:07,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620158942] [2022-11-16 10:56:07,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:07,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 10:56:07,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:07,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 10:56:07,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:56:07,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-16 10:56:07,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 453 transitions, 3517 flow. Second operand has 14 states, 14 states have (on average 246.92857142857142) internal successors, (3457), 14 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:07,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:56:07,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-16 10:56:07,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:56:13,686 INFO L130 PetriNetUnfolder]: 11/5383 cut-off events. [2022-11-16 10:56:13,686 INFO L131 PetriNetUnfolder]: For 10616/10618 co-relation queries the response was YES. [2022-11-16 10:56:13,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9642 conditions, 5383 events. 11/5383 cut-off events. For 10616/10618 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 877 event pairs, 0 based on Foata normal form. 2/5349 useless extension candidates. Maximal degree in co-relation 9343. Up to 192 conditions per place. [2022-11-16 10:56:13,703 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 43 selfloop transitions, 14 changer transitions 0/484 dead transitions. [2022-11-16 10:56:13,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 484 transitions, 3733 flow [2022-11-16 10:56:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 10:56:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 10:56:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3689 transitions. [2022-11-16 10:56:13,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.865962441314554 [2022-11-16 10:56:13,708 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3689 transitions. [2022-11-16 10:56:13,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3689 transitions. [2022-11-16 10:56:13,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:56:13,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3689 transitions. [2022-11-16 10:56:13,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 245.93333333333334) internal successors, (3689), 15 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:13,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:13,721 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:13,721 INFO L175 Difference]: Start difference. First operand has 422 places, 453 transitions, 3517 flow. Second operand 15 states and 3689 transitions. [2022-11-16 10:56:13,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 484 transitions, 3733 flow [2022-11-16 10:56:13,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 484 transitions, 3717 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 10:56:13,790 INFO L231 Difference]: Finished difference. Result has 431 places, 456 transitions, 3562 flow [2022-11-16 10:56:13,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3497, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3562, PETRI_PLACES=431, PETRI_TRANSITIONS=456} [2022-11-16 10:56:13,792 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 172 predicate places. [2022-11-16 10:56:13,792 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 456 transitions, 3562 flow [2022-11-16 10:56:13,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 246.92857142857142) internal successors, (3457), 14 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:13,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:56:13,794 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:13,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:14,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 10:56:14,019 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:56:14,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:14,020 INFO L85 PathProgramCache]: Analyzing trace with hash 783219858, now seen corresponding path program 2 times [2022-11-16 10:56:14,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:14,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184559973] [2022-11-16 10:56:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:14,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:14,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:56:14,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024447643] [2022-11-16 10:56:14,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:56:14,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:14,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:14,527 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:14,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 10:56:17,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:56:17,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:17,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:56:17,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164526 trivial. 0 not checked. [2022-11-16 10:56:17,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:56:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184559973] [2022-11-16 10:56:17,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:56:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024447643] [2022-11-16 10:56:17,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024447643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:17,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:17,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:56:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995859955] [2022-11-16 10:56:17,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:17,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:56:17,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:56:17,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:56:17,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 284 [2022-11-16 10:56:17,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 456 transitions, 3562 flow. Second operand has 4 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:17,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:56:17,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 284 [2022-11-16 10:56:17,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:56:23,046 INFO L130 PetriNetUnfolder]: 11/5359 cut-off events. [2022-11-16 10:56:23,046 INFO L131 PetriNetUnfolder]: For 10626/10664 co-relation queries the response was YES. [2022-11-16 10:56:23,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9134 conditions, 5359 events. 11/5359 cut-off events. For 10626/10664 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 783 event pairs, 0 based on Foata normal form. 6/5335 useless extension candidates. Maximal degree in co-relation 8819. Up to 192 conditions per place. [2022-11-16 10:56:23,059 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 11 selfloop transitions, 4 changer transitions 0/457 dead transitions. [2022-11-16 10:56:23,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 457 transitions, 3594 flow [2022-11-16 10:56:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:56:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:56:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1262 transitions. [2022-11-16 10:56:23,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8887323943661972 [2022-11-16 10:56:23,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1262 transitions. [2022-11-16 10:56:23,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1262 transitions. [2022-11-16 10:56:23,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:56:23,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1262 transitions. [2022-11-16 10:56:23,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 252.4) internal successors, (1262), 5 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:23,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:23,067 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:23,067 INFO L175 Difference]: Start difference. First operand has 431 places, 456 transitions, 3562 flow. Second operand 5 states and 1262 transitions. [2022-11-16 10:56:23,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 457 transitions, 3594 flow [2022-11-16 10:56:23,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 457 transitions, 3554 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-11-16 10:56:23,128 INFO L231 Difference]: Finished difference. Result has 424 places, 455 transitions, 3532 flow [2022-11-16 10:56:23,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3532, PETRI_PLACES=424, PETRI_TRANSITIONS=455} [2022-11-16 10:56:23,129 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 165 predicate places. [2022-11-16 10:56:23,129 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 455 transitions, 3532 flow [2022-11-16 10:56:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:23,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:56:23,131 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:56:23,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:23,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 10:56:23,343 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:56:23,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:23,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1489987736, now seen corresponding path program 1 times [2022-11-16 10:56:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:23,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271286668] [2022-11-16 10:56:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:23,862 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:56:23,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688613230] [2022-11-16 10:56:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:23,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:23,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:23,867 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:23,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 10:56:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:29,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 15391 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:56:29,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 10:56:37,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-16 10:56:45,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:45,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271286668] [2022-11-16 10:56:45,120 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:56:45,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688613230] [2022-11-16 10:56:45,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688613230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:45,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:56:45,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 10:56:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32745284] [2022-11-16 10:56:45,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 10:56:45,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 10:56:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 10:56:45,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-16 10:56:45,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 455 transitions, 3532 flow. Second operand has 16 states, 16 states have (on average 246.875) internal successors, (3950), 16 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:45,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:56:45,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-16 10:56:45,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:00,963 INFO L130 PetriNetUnfolder]: 11/8928 cut-off events. [2022-11-16 10:57:00,964 INFO L131 PetriNetUnfolder]: For 18814/18815 co-relation queries the response was YES. [2022-11-16 10:57:00,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16396 conditions, 8928 events. 11/8928 cut-off events. For 18814/18815 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 228 event pairs, 0 based on Foata normal form. 4/8918 useless extension candidates. Maximal degree in co-relation 16216. Up to 336 conditions per place. [2022-11-16 10:57:00,988 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 69 selfloop transitions, 21 changer transitions 0/516 dead transitions. [2022-11-16 10:57:00,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 516 transitions, 3920 flow [2022-11-16 10:57:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 10:57:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 10:57:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5176 transitions. [2022-11-16 10:57:00,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678739101274312 [2022-11-16 10:57:00,995 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5176 transitions. [2022-11-16 10:57:00,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5176 transitions. [2022-11-16 10:57:00,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:00,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5176 transitions. [2022-11-16 10:57:01,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 246.47619047619048) internal successors, (5176), 21 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:01,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:01,012 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:01,012 INFO L175 Difference]: Start difference. First operand has 424 places, 455 transitions, 3532 flow. Second operand 21 states and 5176 transitions. [2022-11-16 10:57:01,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 516 transitions, 3920 flow [2022-11-16 10:57:01,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 516 transitions, 3904 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 10:57:01,100 INFO L231 Difference]: Finished difference. Result has 445 places, 465 transitions, 3667 flow [2022-11-16 10:57:01,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3522, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3667, PETRI_PLACES=445, PETRI_TRANSITIONS=465} [2022-11-16 10:57:01,102 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 186 predicate places. [2022-11-16 10:57:01,102 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 465 transitions, 3667 flow [2022-11-16 10:57:01,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 246.875) internal successors, (3950), 16 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:01,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:01,105 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:01,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:01,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:01,319 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:57:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2006174068, now seen corresponding path program 2 times [2022-11-16 10:57:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:01,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735639112] [2022-11-16 10:57:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:01,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:02,490 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:57:02,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951732898] [2022-11-16 10:57:02,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:57:02,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:02,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:02,493 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:02,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 10:57:08,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:57:08,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:57:08,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:57:08,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 901558 trivial. 0 not checked. [2022-11-16 10:57:08,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:08,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:08,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735639112] [2022-11-16 10:57:08,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:57:08,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951732898] [2022-11-16 10:57:08,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951732898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:08,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:08,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32887927] [2022-11-16 10:57:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:08,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:08,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:08,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:08,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 284 [2022-11-16 10:57:08,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 465 transitions, 3667 flow. Second operand has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:08,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:08,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 284 [2022-11-16 10:57:08,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:20,814 INFO L130 PetriNetUnfolder]: 11/8927 cut-off events. [2022-11-16 10:57:20,814 INFO L131 PetriNetUnfolder]: For 18864/18881 co-relation queries the response was YES. [2022-11-16 10:57:20,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15539 conditions, 8927 events. 11/8927 cut-off events. For 18864/18881 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 1/8915 useless extension candidates. Maximal degree in co-relation 15351. Up to 336 conditions per place. [2022-11-16 10:57:20,838 INFO L137 encePairwiseOnDemand]: 280/284 looper letters, 9 selfloop transitions, 3 changer transitions 0/464 dead transitions. [2022-11-16 10:57:20,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 464 transitions, 3689 flow [2022-11-16 10:57:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:57:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:57:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1009 transitions. [2022-11-16 10:57:20,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8882042253521126 [2022-11-16 10:57:20,840 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1009 transitions. [2022-11-16 10:57:20,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1009 transitions. [2022-11-16 10:57:20,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:20,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1009 transitions. [2022-11-16 10:57:20,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:20,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:20,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:20,845 INFO L175 Difference]: Start difference. First operand has 445 places, 465 transitions, 3667 flow. Second operand 4 states and 1009 transitions. [2022-11-16 10:57:20,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 464 transitions, 3689 flow [2022-11-16 10:57:20,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 464 transitions, 3671 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 10:57:20,925 INFO L231 Difference]: Finished difference. Result has 438 places, 464 transitions, 3653 flow [2022-11-16 10:57:20,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3653, PETRI_PLACES=438, PETRI_TRANSITIONS=464} [2022-11-16 10:57:20,926 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 179 predicate places. [2022-11-16 10:57:20,926 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 464 transitions, 3653 flow [2022-11-16 10:57:20,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:20,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:20,929 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:20,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:21,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 10:57:21,145 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 10:57:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:21,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2009554469, now seen corresponding path program 1 times [2022-11-16 10:57:21,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:21,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145939697] [2022-11-16 10:57:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:21,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:22,369 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:57:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020903787] [2022-11-16 10:57:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:22,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:22,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:22,376 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:22,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0075500-42d6-4fd2-9d35-7a30d151cc09/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 10:57:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:34,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 35652 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 10:57:34,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-16 10:57:50,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-16 10:58:07,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:07,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145939697] [2022-11-16 10:58:07,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:58:07,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020903787] [2022-11-16 10:58:07,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020903787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:07,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:58:07,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-16 10:58:07,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777625234] [2022-11-16 10:58:07,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:07,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 10:58:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 10:58:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-16 10:58:07,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-16 10:58:07,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 464 transitions, 3653 flow. Second operand has 21 states, 21 states have (on average 247.42857142857142) internal successors, (5196), 21 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:58:07,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:58:07,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-16 10:58:07,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand