./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/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_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/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_52571718-6fb0-45cf-8008-f83c7be8c070/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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:34:06,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:34:06,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:34:06,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:34:06,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:34:06,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:34:06,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:34:06,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:34:06,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:34:06,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:34:06,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:34:06,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:34:06,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:34:06,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:34:06,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:34:06,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:34:06,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:34:06,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:34:06,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:34:06,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:34:06,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:34:06,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:34:06,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:34:06,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:34:06,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:34:06,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:34:06,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:34:06,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:34:06,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:34:06,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:34:06,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:34:06,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:34:06,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:34:06,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:34:06,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:34:06,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:34:06,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:34:06,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:34:06,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:34:06,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:34:06,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:34:06,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:34:06,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:34:06,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:34:06,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:34:06,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:34:06,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:34:06,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:34:06,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:34:06,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:34:06,298 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:34:06,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:34:06,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:34:06,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:34:06,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:34:06,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:34:06,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:34:06,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:34:06,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:34:06,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:34:06,303 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:34:06,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:34:06,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:34:06,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:34:06,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:34:06,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:34:06,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:34:06,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:34:06,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:34:06,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:34:06,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:34:06,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:34:06,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:34:06,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:34:06,319 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:34:06,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:34:06,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:34:06,320 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_52571718-6fb0-45cf-8008-f83c7be8c070/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2022-11-16 11:34:06,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:34:06,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:34:06,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:34:06,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:34:06,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:34:06,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2022-11-16 11:34:06,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/data/b16ae14b5/ca3c36e30bb74b8b941461ce5356026e/FLAG95f0882f4 [2022-11-16 11:34:07,487 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:34:07,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2022-11-16 11:34:07,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/data/b16ae14b5/ca3c36e30bb74b8b941461ce5356026e/FLAG95f0882f4 [2022-11-16 11:34:07,844 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/data/b16ae14b5/ca3c36e30bb74b8b941461ce5356026e [2022-11-16 11:34:07,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:34:07,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:34:07,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:34:07,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:34:07,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:34:07,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:34:07" (1/1) ... [2022-11-16 11:34:07,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a64ba91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:07, skipping insertion in model container [2022-11-16 11:34:07,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:34:07" (1/1) ... [2022-11-16 11:34:07,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:34:07,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:34:08,213 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_52571718-6fb0-45cf-8008-f83c7be8c070/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-11-16 11:34:08,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:34:08,250 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:34:08,320 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_52571718-6fb0-45cf-8008-f83c7be8c070/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2022-11-16 11:34:08,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:34:08,360 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:34:08,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08 WrapperNode [2022-11-16 11:34:08,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:34:08,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:34:08,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:34:08,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:34:08,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,452 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 358 [2022-11-16 11:34:08,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:34:08,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:34:08,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:34:08,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:34:08,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:34:08,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:34:08,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:34:08,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:34:08,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (1/1) ... [2022-11-16 11:34:08,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:34:08,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:08,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:34:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:34:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:34:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:34:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:34:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:34:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:34:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:34:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:34:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:34:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:34:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:34:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:34:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:34:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:34:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:34:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:34:08,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:34:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:34:08,676 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:34:08,881 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:34:08,896 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:34:09,712 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:34:10,166 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:34:10,167 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:34:10,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:34:10 BoogieIcfgContainer [2022-11-16 11:34:10,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:34:10,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:34:10,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:34:10,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:34:10,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:34:07" (1/3) ... [2022-11-16 11:34:10,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ba01e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:34:10, skipping insertion in model container [2022-11-16 11:34:10,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:08" (2/3) ... [2022-11-16 11:34:10,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ba01e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:34:10, skipping insertion in model container [2022-11-16 11:34:10,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:34:10" (3/3) ... [2022-11-16 11:34:10,182 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2022-11-16 11:34:10,193 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:34:10,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:34:10,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-16 11:34:10,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:34:10,379 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:34:10,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 300 transitions, 624 flow [2022-11-16 11:34:10,642 INFO L130 PetriNetUnfolder]: 27/297 cut-off events. [2022-11-16 11:34:10,642 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:34:10,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 297 events. 27/297 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 290 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 253. Up to 6 conditions per place. [2022-11-16 11:34:10,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 300 transitions, 624 flow [2022-11-16 11:34:10,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 276 transitions, 567 flow [2022-11-16 11:34:10,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:34:10,703 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;@6432940, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:34:10,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-16 11:34:10,732 INFO L130 PetriNetUnfolder]: 3/78 cut-off events. [2022-11-16 11:34:10,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:34:10,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:10,733 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:10,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1803718650, now seen corresponding path program 1 times [2022-11-16 11:34:10,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:10,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557990683] [2022-11-16 11:34:10,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:10,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:11,284 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 11:34:11,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:11,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557990683] [2022-11-16 11:34:11,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557990683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:11,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:11,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:11,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355592774] [2022-11-16 11:34:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:34:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:11,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:34:11,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:34:11,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-16 11:34:11,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 276 transitions, 567 flow. Second operand has 4 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:11,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:11,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-16 11:34:11,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:12,244 INFO L130 PetriNetUnfolder]: 471/1060 cut-off events. [2022-11-16 11:34:12,245 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-16 11:34:12,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 1060 events. 471/1060 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3882 event pairs, 184 based on Foata normal form. 116/828 useless extension candidates. Maximal degree in co-relation 676. Up to 344 conditions per place. [2022-11-16 11:34:12,267 INFO L137 encePairwiseOnDemand]: 260/300 looper letters, 90 selfloop transitions, 14 changer transitions 6/303 dead transitions. [2022-11-16 11:34:12,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 303 transitions, 844 flow [2022-11-16 11:34:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:34:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:34:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1244 transitions. [2022-11-16 11:34:12,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8293333333333334 [2022-11-16 11:34:12,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1244 transitions. [2022-11-16 11:34:12,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1244 transitions. [2022-11-16 11:34:12,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:12,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1244 transitions. [2022-11-16 11:34:12,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 248.8) internal successors, (1244), 5 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:12,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:12,362 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:12,365 INFO L175 Difference]: Start difference. First operand has 260 places, 276 transitions, 567 flow. Second operand 5 states and 1244 transitions. [2022-11-16 11:34:12,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 303 transitions, 844 flow [2022-11-16 11:34:12,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 303 transitions, 826 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:34:12,391 INFO L231 Difference]: Finished difference. Result has 254 places, 261 transitions, 610 flow [2022-11-16 11:34:12,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=610, PETRI_PLACES=254, PETRI_TRANSITIONS=261} [2022-11-16 11:34:12,399 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, -6 predicate places. [2022-11-16 11:34:12,400 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 261 transitions, 610 flow [2022-11-16 11:34:12,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:12,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:12,404 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:34:12,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash -833026668, now seen corresponding path program 1 times [2022-11-16 11:34:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:12,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317200325] [2022-11-16 11:34:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:12,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:12,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317200325] [2022-11-16 11:34:12,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317200325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:12,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316510592] [2022-11-16 11:34:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:12,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:12,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:12,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:12,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:34:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:12,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:34:12,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:13,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:13,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316510592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:13,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:13,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:34:13,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302651669] [2022-11-16 11:34:13,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:13,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:34:13,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:34:13,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:34:13,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-16 11:34:13,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 261 transitions, 610 flow. Second operand has 12 states, 12 states have (on average 222.66666666666666) internal successors, (2672), 12 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:13,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:13,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-16 11:34:13,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:14,726 INFO L130 PetriNetUnfolder]: 1176/2488 cut-off events. [2022-11-16 11:34:14,727 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-11-16 11:34:14,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4426 conditions, 2488 events. 1176/2488 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11796 event pairs, 460 based on Foata normal form. 9/1657 useless extension candidates. Maximal degree in co-relation 3116. Up to 335 conditions per place. [2022-11-16 11:34:14,761 INFO L137 encePairwiseOnDemand]: 277/300 looper letters, 189 selfloop transitions, 62 changer transitions 0/444 dead transitions. [2022-11-16 11:34:14,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 444 transitions, 1580 flow [2022-11-16 11:34:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:34:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:34:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4220 transitions. [2022-11-16 11:34:14,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7814814814814814 [2022-11-16 11:34:14,773 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4220 transitions. [2022-11-16 11:34:14,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4220 transitions. [2022-11-16 11:34:14,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:14,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4220 transitions. [2022-11-16 11:34:14,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 234.44444444444446) internal successors, (4220), 18 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:14,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 300.0) internal successors, (5700), 19 states have internal predecessors, (5700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:14,811 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 300.0) internal successors, (5700), 19 states have internal predecessors, (5700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:14,812 INFO L175 Difference]: Start difference. First operand has 254 places, 261 transitions, 610 flow. Second operand 18 states and 4220 transitions. [2022-11-16 11:34:14,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 444 transitions, 1580 flow [2022-11-16 11:34:14,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 444 transitions, 1572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:34:14,825 INFO L231 Difference]: Finished difference. Result has 268 places, 303 transitions, 972 flow [2022-11-16 11:34:14,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=972, PETRI_PLACES=268, PETRI_TRANSITIONS=303} [2022-11-16 11:34:14,827 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 8 predicate places. [2022-11-16 11:34:14,827 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 303 transitions, 972 flow [2022-11-16 11:34:14,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 222.66666666666666) internal successors, (2672), 12 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:14,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:14,831 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:14,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:15,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:15,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:15,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash -54021845, now seen corresponding path program 1 times [2022-11-16 11:34:15,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:15,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69143557] [2022-11-16 11:34:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:15,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:15,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:15,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69143557] [2022-11-16 11:34:15,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69143557] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:15,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613580156] [2022-11-16 11:34:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:15,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:15,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:15,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:15,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:34:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:15,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:34:15,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:15,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:15,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613580156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:15,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:15,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:34:15,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800284741] [2022-11-16 11:34:15,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:15,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:34:15,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:15,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:34:15,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:34:15,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-16 11:34:15,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 303 transitions, 972 flow. Second operand has 6 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:15,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:15,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-16 11:34:15,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:16,731 INFO L130 PetriNetUnfolder]: 1176/2476 cut-off events. [2022-11-16 11:34:16,731 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2022-11-16 11:34:16,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4482 conditions, 2476 events. 1176/2476 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11665 event pairs, 460 based on Foata normal form. 12/1648 useless extension candidates. Maximal degree in co-relation 3542. Up to 1268 conditions per place. [2022-11-16 11:34:16,767 INFO L137 encePairwiseOnDemand]: 283/300 looper letters, 91 selfloop transitions, 43 changer transitions 0/327 dead transitions. [2022-11-16 11:34:16,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 327 transitions, 1243 flow [2022-11-16 11:34:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:34:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:34:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1644 transitions. [2022-11-16 11:34:16,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7828571428571428 [2022-11-16 11:34:16,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1644 transitions. [2022-11-16 11:34:16,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1644 transitions. [2022-11-16 11:34:16,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:16,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1644 transitions. [2022-11-16 11:34:16,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.85714285714286) internal successors, (1644), 7 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:16,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:16,789 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:16,790 INFO L175 Difference]: Start difference. First operand has 268 places, 303 transitions, 972 flow. Second operand 7 states and 1644 transitions. [2022-11-16 11:34:16,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 327 transitions, 1243 flow [2022-11-16 11:34:16,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 327 transitions, 1127 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 11:34:16,812 INFO L231 Difference]: Finished difference. Result has 262 places, 291 transitions, 861 flow [2022-11-16 11:34:16,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=861, PETRI_PLACES=262, PETRI_TRANSITIONS=291} [2022-11-16 11:34:16,816 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 2 predicate places. [2022-11-16 11:34:16,817 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 291 transitions, 861 flow [2022-11-16 11:34:16,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:16,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:16,818 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:16,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:34:17,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:17,025 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1165344646, now seen corresponding path program 2 times [2022-11-16 11:34:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:17,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669824859] [2022-11-16 11:34:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:17,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:17,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669824859] [2022-11-16 11:34:17,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669824859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:17,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264845213] [2022-11-16 11:34:17,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:34:17,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:17,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:17,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:17,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:34:17,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:34:17,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:17,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:34:17,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:34:17,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:34:18,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264845213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:18,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:18,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:34:18,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237026528] [2022-11-16 11:34:18,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:18,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:34:18,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:18,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:34:18,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:34:18,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 300 [2022-11-16 11:34:18,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 291 transitions, 861 flow. Second operand has 18 states, 18 states have (on average 203.61111111111111) internal successors, (3665), 18 states have internal predecessors, (3665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:18,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:18,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 300 [2022-11-16 11:34:18,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:20,482 INFO L130 PetriNetUnfolder]: 687/2041 cut-off events. [2022-11-16 11:34:20,482 INFO L131 PetriNetUnfolder]: For 273/273 co-relation queries the response was YES. [2022-11-16 11:34:20,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 2041 events. 687/2041 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 9519 event pairs, 161 based on Foata normal form. 6/1627 useless extension candidates. Maximal degree in co-relation 2256. Up to 210 conditions per place. [2022-11-16 11:34:20,506 INFO L137 encePairwiseOnDemand]: 268/300 looper letters, 234 selfloop transitions, 97 changer transitions 0/504 dead transitions. [2022-11-16 11:34:20,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 504 transitions, 2086 flow [2022-11-16 11:34:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:34:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 11:34:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10165 transitions. [2022-11-16 11:34:20,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6914965986394558 [2022-11-16 11:34:20,536 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10165 transitions. [2022-11-16 11:34:20,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10165 transitions. [2022-11-16 11:34:20,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:20,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10165 transitions. [2022-11-16 11:34:20,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 207.44897959183675) internal successors, (10165), 49 states have internal predecessors, (10165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:20,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 300.0) internal successors, (15000), 50 states have internal predecessors, (15000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:20,624 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 300.0) internal successors, (15000), 50 states have internal predecessors, (15000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:20,633 INFO L175 Difference]: Start difference. First operand has 262 places, 291 transitions, 861 flow. Second operand 49 states and 10165 transitions. [2022-11-16 11:34:20,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 504 transitions, 2086 flow [2022-11-16 11:34:20,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 504 transitions, 2017 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:34:20,648 INFO L231 Difference]: Finished difference. Result has 304 places, 327 transitions, 1196 flow [2022-11-16 11:34:20,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1196, PETRI_PLACES=304, PETRI_TRANSITIONS=327} [2022-11-16 11:34:20,653 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 44 predicate places. [2022-11-16 11:34:20,653 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 327 transitions, 1196 flow [2022-11-16 11:34:20,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 203.61111111111111) internal successors, (3665), 18 states have internal predecessors, (3665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:20,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:20,657 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:20,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:20,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:20,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:20,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:20,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1970047239, now seen corresponding path program 1 times [2022-11-16 11:34:20,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:20,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884976927] [2022-11-16 11:34:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:20,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:21,074 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 11:34:21,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:21,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884976927] [2022-11-16 11:34:21,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884976927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:21,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:21,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:21,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758858068] [2022-11-16 11:34:21,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:21,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:21,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:21,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:21,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:21,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 300 [2022-11-16 11:34:21,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 327 transitions, 1196 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:21,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:21,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 300 [2022-11-16 11:34:21,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:22,372 INFO L130 PetriNetUnfolder]: 1828/3763 cut-off events. [2022-11-16 11:34:22,372 INFO L131 PetriNetUnfolder]: For 347/354 co-relation queries the response was YES. [2022-11-16 11:34:22,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6865 conditions, 3763 events. 1828/3763 cut-off events. For 347/354 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 19556 event pairs, 105 based on Foata normal form. 0/2860 useless extension candidates. Maximal degree in co-relation 6541. Up to 1870 conditions per place. [2022-11-16 11:34:22,411 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 33 selfloop transitions, 4 changer transitions 0/338 dead transitions. [2022-11-16 11:34:22,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 338 transitions, 1297 flow [2022-11-16 11:34:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2022-11-16 11:34:22,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8655555555555555 [2022-11-16 11:34:22,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2022-11-16 11:34:22,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2022-11-16 11:34:22,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:22,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2022-11-16 11:34:22,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,421 INFO L175 Difference]: Start difference. First operand has 304 places, 327 transitions, 1196 flow. Second operand 3 states and 779 transitions. [2022-11-16 11:34:22,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 338 transitions, 1297 flow [2022-11-16 11:34:22,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 338 transitions, 1174 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-16 11:34:22,432 INFO L231 Difference]: Finished difference. Result has 293 places, 328 transitions, 1095 flow [2022-11-16 11:34:22,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1095, PETRI_PLACES=293, PETRI_TRANSITIONS=328} [2022-11-16 11:34:22,434 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 33 predicate places. [2022-11-16 11:34:22,434 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 328 transitions, 1095 flow [2022-11-16 11:34:22,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:22,435 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:22,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:34:22,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:22,437 INFO L85 PathProgramCache]: Analyzing trace with hash 891194432, now seen corresponding path program 1 times [2022-11-16 11:34:22,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:22,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748102964] [2022-11-16 11:34:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:22,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:34:22,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:22,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748102964] [2022-11-16 11:34:22,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748102964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:22,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:22,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:34:22,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266130018] [2022-11-16 11:34:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:22,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:34:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:34:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:34:22,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 300 [2022-11-16 11:34:22,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 328 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 222.83333333333334) internal successors, (1337), 6 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:22,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:22,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 300 [2022-11-16 11:34:22,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:23,601 INFO L130 PetriNetUnfolder]: 856/2546 cut-off events. [2022-11-16 11:34:23,601 INFO L131 PetriNetUnfolder]: For 708/747 co-relation queries the response was YES. [2022-11-16 11:34:23,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 2546 events. 856/2546 cut-off events. For 708/747 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 13490 event pairs, 226 based on Foata normal form. 17/2073 useless extension candidates. Maximal degree in co-relation 4134. Up to 1013 conditions per place. [2022-11-16 11:34:23,638 INFO L137 encePairwiseOnDemand]: 289/300 looper letters, 128 selfloop transitions, 7 changer transitions 0/343 dead transitions. [2022-11-16 11:34:23,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 343 transitions, 1409 flow [2022-11-16 11:34:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:34:23,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:34:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1603 transitions. [2022-11-16 11:34:23,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-11-16 11:34:23,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1603 transitions. [2022-11-16 11:34:23,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1603 transitions. [2022-11-16 11:34:23,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:23,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1603 transitions. [2022-11-16 11:34:23,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:23,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:23,655 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:23,656 INFO L175 Difference]: Start difference. First operand has 293 places, 328 transitions, 1095 flow. Second operand 7 states and 1603 transitions. [2022-11-16 11:34:23,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 343 transitions, 1409 flow [2022-11-16 11:34:23,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 343 transitions, 1397 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:34:23,668 INFO L231 Difference]: Finished difference. Result has 298 places, 328 transitions, 1110 flow [2022-11-16 11:34:23,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1110, PETRI_PLACES=298, PETRI_TRANSITIONS=328} [2022-11-16 11:34:23,670 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 38 predicate places. [2022-11-16 11:34:23,670 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 328 transitions, 1110 flow [2022-11-16 11:34:23,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.83333333333334) internal successors, (1337), 6 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:23,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:23,671 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:23,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:34:23,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash 82719327, now seen corresponding path program 1 times [2022-11-16 11:34:23,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:23,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819978660] [2022-11-16 11:34:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:23,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:24,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:24,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819978660] [2022-11-16 11:34:24,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819978660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:24,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61133257] [2022-11-16 11:34:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:24,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:24,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:24,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:24,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:34:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:24,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:34:24,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:24,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:24,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61133257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:24,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:24,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 11:34:24,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605737450] [2022-11-16 11:34:24,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:24,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:34:24,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:34:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:34:25,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-16 11:34:25,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 328 transitions, 1110 flow. Second operand has 32 states, 32 states have (on average 223.28125) internal successors, (7145), 32 states have internal predecessors, (7145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:25,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:25,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-16 11:34:25,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:28,752 INFO L130 PetriNetUnfolder]: 1920/5489 cut-off events. [2022-11-16 11:34:28,752 INFO L131 PetriNetUnfolder]: For 1357/1444 co-relation queries the response was YES. [2022-11-16 11:34:28,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10170 conditions, 5489 events. 1920/5489 cut-off events. For 1357/1444 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 33511 event pairs, 514 based on Foata normal form. 16/4333 useless extension candidates. Maximal degree in co-relation 9418. Up to 645 conditions per place. [2022-11-16 11:34:28,816 INFO L137 encePairwiseOnDemand]: 281/300 looper letters, 484 selfloop transitions, 160 changer transitions 0/844 dead transitions. [2022-11-16 11:34:28,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 844 transitions, 4244 flow [2022-11-16 11:34:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:34:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:34:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10340 transitions. [2022-11-16 11:34:28,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2022-11-16 11:34:28,841 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10340 transitions. [2022-11-16 11:34:28,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10340 transitions. [2022-11-16 11:34:28,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:28,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10340 transitions. [2022-11-16 11:34:28,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 235.0) internal successors, (10340), 44 states have internal predecessors, (10340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 300.0) internal successors, (13500), 45 states have internal predecessors, (13500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,908 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 300.0) internal successors, (13500), 45 states have internal predecessors, (13500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,909 INFO L175 Difference]: Start difference. First operand has 298 places, 328 transitions, 1110 flow. Second operand 44 states and 10340 transitions. [2022-11-16 11:34:28,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 844 transitions, 4244 flow [2022-11-16 11:34:28,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 844 transitions, 4234 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:34:28,936 INFO L231 Difference]: Finished difference. Result has 346 places, 421 transitions, 2110 flow [2022-11-16 11:34:28,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2110, PETRI_PLACES=346, PETRI_TRANSITIONS=421} [2022-11-16 11:34:28,937 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 86 predicate places. [2022-11-16 11:34:28,938 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 421 transitions, 2110 flow [2022-11-16 11:34:28,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 223.28125) internal successors, (7145), 32 states have internal predecessors, (7145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:28,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:28,941 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:28,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:29,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:29,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1739426309, now seen corresponding path program 1 times [2022-11-16 11:34:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:29,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894652960] [2022-11-16 11:34:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:29,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894652960] [2022-11-16 11:34:29,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894652960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:29,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:29,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050401706] [2022-11-16 11:34:29,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:29,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:29,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:29,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 300 [2022-11-16 11:34:29,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 421 transitions, 2110 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:29,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:29,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 300 [2022-11-16 11:34:29,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:32,250 INFO L130 PetriNetUnfolder]: 4426/9179 cut-off events. [2022-11-16 11:34:32,251 INFO L131 PetriNetUnfolder]: For 2035/2050 co-relation queries the response was YES. [2022-11-16 11:34:32,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18846 conditions, 9179 events. 4426/9179 cut-off events. For 2035/2050 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 57952 event pairs, 1069 based on Foata normal form. 0/7166 useless extension candidates. Maximal degree in co-relation 18140. Up to 4081 conditions per place. [2022-11-16 11:34:32,370 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 36 selfloop transitions, 3 changer transitions 0/433 dead transitions. [2022-11-16 11:34:32,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 433 transitions, 2223 flow [2022-11-16 11:34:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 781 transitions. [2022-11-16 11:34:32,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8677777777777778 [2022-11-16 11:34:32,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 781 transitions. [2022-11-16 11:34:32,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 781 transitions. [2022-11-16 11:34:32,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:32,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 781 transitions. [2022-11-16 11:34:32,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:32,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:32,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:32,380 INFO L175 Difference]: Start difference. First operand has 346 places, 421 transitions, 2110 flow. Second operand 3 states and 781 transitions. [2022-11-16 11:34:32,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 433 transitions, 2223 flow [2022-11-16 11:34:32,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 433 transitions, 2121 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-16 11:34:32,411 INFO L231 Difference]: Finished difference. Result has 335 places, 422 transitions, 2028 flow [2022-11-16 11:34:32,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2028, PETRI_PLACES=335, PETRI_TRANSITIONS=422} [2022-11-16 11:34:32,416 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 75 predicate places. [2022-11-16 11:34:32,416 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 422 transitions, 2028 flow [2022-11-16 11:34:32,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:32,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:32,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:32,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:34:32,420 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:32,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:32,421 INFO L85 PathProgramCache]: Analyzing trace with hash 672960064, now seen corresponding path program 1 times [2022-11-16 11:34:32,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:32,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79556528] [2022-11-16 11:34:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:32,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:32,701 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 11:34:32,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:32,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79556528] [2022-11-16 11:34:32,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79556528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:32,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:32,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:32,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181341087] [2022-11-16 11:34:32,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:32,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 300 [2022-11-16 11:34:32,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 422 transitions, 2028 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:32,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:32,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 300 [2022-11-16 11:34:32,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:36,133 INFO L130 PetriNetUnfolder]: 5255/12172 cut-off events. [2022-11-16 11:34:36,133 INFO L131 PetriNetUnfolder]: For 5997/6634 co-relation queries the response was YES. [2022-11-16 11:34:36,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24511 conditions, 12172 events. 5255/12172 cut-off events. For 5997/6634 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 89223 event pairs, 693 based on Foata normal form. 0/9727 useless extension candidates. Maximal degree in co-relation 23819. Up to 4029 conditions per place. [2022-11-16 11:34:36,290 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 30 selfloop transitions, 4 changer transitions 0/434 dead transitions. [2022-11-16 11:34:36,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 434 transitions, 2142 flow [2022-11-16 11:34:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 788 transitions. [2022-11-16 11:34:36,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755555555555555 [2022-11-16 11:34:36,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 788 transitions. [2022-11-16 11:34:36,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 788 transitions. [2022-11-16 11:34:36,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:36,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 788 transitions. [2022-11-16 11:34:36,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:36,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:36,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:36,417 INFO L175 Difference]: Start difference. First operand has 335 places, 422 transitions, 2028 flow. Second operand 3 states and 788 transitions. [2022-11-16 11:34:36,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 434 transitions, 2142 flow [2022-11-16 11:34:36,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 434 transitions, 2132 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:34:36,444 INFO L231 Difference]: Finished difference. Result has 337 places, 423 transitions, 2044 flow [2022-11-16 11:34:36,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2044, PETRI_PLACES=337, PETRI_TRANSITIONS=423} [2022-11-16 11:34:36,446 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 77 predicate places. [2022-11-16 11:34:36,446 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 423 transitions, 2044 flow [2022-11-16 11:34:36,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:36,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:36,447 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:36,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:34:36,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:36,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:36,448 INFO L85 PathProgramCache]: Analyzing trace with hash -759460488, now seen corresponding path program 1 times [2022-11-16 11:34:36,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:36,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790851026] [2022-11-16 11:34:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:36,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:34:36,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:36,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790851026] [2022-11-16 11:34:36,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790851026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:36,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124174987] [2022-11-16 11:34:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:36,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:36,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:36,738 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:36,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:34:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:36,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:34:36,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:34:37,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:37,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124174987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:37,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:37,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 11:34:37,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196544237] [2022-11-16 11:34:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:37,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:34:37,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:37,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:34:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:34:37,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 300 [2022-11-16 11:34:37,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 423 transitions, 2044 flow. Second operand has 4 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:37,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:37,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 300 [2022-11-16 11:34:37,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:39,040 INFO L130 PetriNetUnfolder]: 1634/6006 cut-off events. [2022-11-16 11:34:39,040 INFO L131 PetriNetUnfolder]: For 2816/3123 co-relation queries the response was YES. [2022-11-16 11:34:39,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10906 conditions, 6006 events. 1634/6006 cut-off events. For 2816/3123 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 40923 event pairs, 348 based on Foata normal form. 70/5541 useless extension candidates. Maximal degree in co-relation 10210. Up to 1990 conditions per place. [2022-11-16 11:34:39,097 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 18 selfloop transitions, 3 changer transitions 0/421 dead transitions. [2022-11-16 11:34:39,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 421 transitions, 2078 flow [2022-11-16 11:34:39,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:34:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:34:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1023 transitions. [2022-11-16 11:34:39,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8525 [2022-11-16 11:34:39,101 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1023 transitions. [2022-11-16 11:34:39,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1023 transitions. [2022-11-16 11:34:39,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:39,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1023 transitions. [2022-11-16 11:34:39,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:39,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:39,108 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:39,108 INFO L175 Difference]: Start difference. First operand has 337 places, 423 transitions, 2044 flow. Second operand 4 states and 1023 transitions. [2022-11-16 11:34:39,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 421 transitions, 2078 flow [2022-11-16 11:34:39,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 421 transitions, 2070 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:34:39,137 INFO L231 Difference]: Finished difference. Result has 336 places, 421 transitions, 2034 flow [2022-11-16 11:34:39,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2034, PETRI_PLACES=336, PETRI_TRANSITIONS=421} [2022-11-16 11:34:39,139 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 76 predicate places. [2022-11-16 11:34:39,139 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 421 transitions, 2034 flow [2022-11-16 11:34:39,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:39,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:39,140 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:39,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:39,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:39,347 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:39,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:39,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1501296633, now seen corresponding path program 1 times [2022-11-16 11:34:39,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:39,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527861488] [2022-11-16 11:34:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:39,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:39,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:39,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527861488] [2022-11-16 11:34:39,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527861488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:39,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:39,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:34:39,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199202929] [2022-11-16 11:34:39,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:39,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:34:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:34:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:34:39,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 300 [2022-11-16 11:34:39,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 421 transitions, 2034 flow. Second operand has 6 states, 6 states have (on average 223.16666666666666) internal successors, (1339), 6 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:39,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:39,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 300 [2022-11-16 11:34:39,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:42,002 INFO L130 PetriNetUnfolder]: 1706/7522 cut-off events. [2022-11-16 11:34:42,003 INFO L131 PetriNetUnfolder]: For 3414/3781 co-relation queries the response was YES. [2022-11-16 11:34:42,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13302 conditions, 7522 events. 1706/7522 cut-off events. For 3414/3781 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 57016 event pairs, 348 based on Foata normal form. 135/7032 useless extension candidates. Maximal degree in co-relation 12236. Up to 2164 conditions per place. [2022-11-16 11:34:42,053 INFO L137 encePairwiseOnDemand]: 288/300 looper letters, 255 selfloop transitions, 29 changer transitions 13/534 dead transitions. [2022-11-16 11:34:42,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 534 transitions, 3302 flow [2022-11-16 11:34:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:34:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:34:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2053 transitions. [2022-11-16 11:34:42,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7603703703703704 [2022-11-16 11:34:42,058 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2053 transitions. [2022-11-16 11:34:42,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2053 transitions. [2022-11-16 11:34:42,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:42,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2053 transitions. [2022-11-16 11:34:42,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 228.11111111111111) internal successors, (2053), 9 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:42,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:42,069 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:42,069 INFO L175 Difference]: Start difference. First operand has 336 places, 421 transitions, 2034 flow. Second operand 9 states and 2053 transitions. [2022-11-16 11:34:42,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 534 transitions, 3302 flow [2022-11-16 11:34:42,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 534 transitions, 3296 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:34:42,104 INFO L231 Difference]: Finished difference. Result has 343 places, 422 transitions, 2102 flow [2022-11-16 11:34:42,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2102, PETRI_PLACES=343, PETRI_TRANSITIONS=422} [2022-11-16 11:34:42,106 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 83 predicate places. [2022-11-16 11:34:42,106 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 422 transitions, 2102 flow [2022-11-16 11:34:42,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.16666666666666) internal successors, (1339), 6 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:42,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:42,107 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:42,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:34:42,108 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:42,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1540028331, now seen corresponding path program 1 times [2022-11-16 11:34:42,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:42,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544379190] [2022-11-16 11:34:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:42,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:34:42,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:42,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544379190] [2022-11-16 11:34:42,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544379190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:42,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:42,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:42,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679989412] [2022-11-16 11:34:42,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:42,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:34:42,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:34:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:34:42,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 300 [2022-11-16 11:34:42,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 422 transitions, 2102 flow. Second operand has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:42,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:42,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 300 [2022-11-16 11:34:42,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:45,825 INFO L130 PetriNetUnfolder]: 2689/10429 cut-off events. [2022-11-16 11:34:45,826 INFO L131 PetriNetUnfolder]: For 5043/5643 co-relation queries the response was YES. [2022-11-16 11:34:45,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19314 conditions, 10429 events. 2689/10429 cut-off events. For 5043/5643 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 85085 event pairs, 343 based on Foata normal form. 262/9713 useless extension candidates. Maximal degree in co-relation 17822. Up to 1907 conditions per place. [2022-11-16 11:34:45,923 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 36 selfloop transitions, 4 changer transitions 1/434 dead transitions. [2022-11-16 11:34:45,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 434 transitions, 2231 flow [2022-11-16 11:34:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:34:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:34:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1032 transitions. [2022-11-16 11:34:45,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86 [2022-11-16 11:34:45,926 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1032 transitions. [2022-11-16 11:34:45,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1032 transitions. [2022-11-16 11:34:45,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:45,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1032 transitions. [2022-11-16 11:34:45,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:45,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:45,932 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:45,932 INFO L175 Difference]: Start difference. First operand has 343 places, 422 transitions, 2102 flow. Second operand 4 states and 1032 transitions. [2022-11-16 11:34:45,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 434 transitions, 2231 flow [2022-11-16 11:34:45,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 434 transitions, 2200 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:34:45,964 INFO L231 Difference]: Finished difference. Result has 343 places, 422 transitions, 2084 flow [2022-11-16 11:34:45,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2084, PETRI_PLACES=343, PETRI_TRANSITIONS=422} [2022-11-16 11:34:45,966 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 83 predicate places. [2022-11-16 11:34:45,966 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 422 transitions, 2084 flow [2022-11-16 11:34:45,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:45,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:45,967 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:45,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:34:45,968 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1707791839, now seen corresponding path program 1 times [2022-11-16 11:34:45,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:45,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841241167] [2022-11-16 11:34:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:45,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:34:46,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:46,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841241167] [2022-11-16 11:34:46,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841241167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:46,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:46,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:46,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994536556] [2022-11-16 11:34:46,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:46,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:46,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:46,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:46,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 300 [2022-11-16 11:34:46,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 422 transitions, 2084 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 11:34:46,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:46,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 300 [2022-11-16 11:34:46,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:50,781 INFO L130 PetriNetUnfolder]: 6402/15639 cut-off events. [2022-11-16 11:34:50,781 INFO L131 PetriNetUnfolder]: For 10173/11181 co-relation queries the response was YES. [2022-11-16 11:34:50,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35297 conditions, 15639 events. 6402/15639 cut-off events. For 10173/11181 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 118552 event pairs, 1302 based on Foata normal form. 126/14561 useless extension candidates. Maximal degree in co-relation 32638. Up to 6582 conditions per place. [2022-11-16 11:34:50,967 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 36 selfloop transitions, 3 changer transitions 0/434 dead transitions. [2022-11-16 11:34:50,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 434 transitions, 2209 flow [2022-11-16 11:34:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:34:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2022-11-16 11:34:50,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-16 11:34:50,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2022-11-16 11:34:50,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2022-11-16 11:34:50,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:50,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2022-11-16 11:34:50,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:50,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:50,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:50,974 INFO L175 Difference]: Start difference. First operand has 343 places, 422 transitions, 2084 flow. Second operand 3 states and 780 transitions. [2022-11-16 11:34:50,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 434 transitions, 2209 flow [2022-11-16 11:34:51,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 434 transitions, 2203 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:34:51,010 INFO L231 Difference]: Finished difference. Result has 344 places, 423 transitions, 2100 flow [2022-11-16 11:34:51,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2100, PETRI_PLACES=344, PETRI_TRANSITIONS=423} [2022-11-16 11:34:51,012 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 84 predicate places. [2022-11-16 11:34:51,012 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 423 transitions, 2100 flow [2022-11-16 11:34:51,013 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 11:34:51,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:51,013 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:51,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:34:51,014 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash -266526955, now seen corresponding path program 1 times [2022-11-16 11:34:51,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:51,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788621038] [2022-11-16 11:34:51,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:51,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:34:51,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:51,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788621038] [2022-11-16 11:34:51,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788621038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:51,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:51,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:34:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963951672] [2022-11-16 11:34:51,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:51,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:34:51,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:51,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:34:51,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:34:51,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 300 [2022-11-16 11:34:51,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 423 transitions, 2100 flow. Second operand has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:51,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:51,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 300 [2022-11-16 11:34:51,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:34:56,949 INFO L130 PetriNetUnfolder]: 4386/17931 cut-off events. [2022-11-16 11:34:56,949 INFO L131 PetriNetUnfolder]: For 11250/12146 co-relation queries the response was YES. [2022-11-16 11:34:57,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35203 conditions, 17931 events. 4386/17931 cut-off events. For 11250/12146 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 171125 event pairs, 1008 based on Foata normal form. 112/16671 useless extension candidates. Maximal degree in co-relation 32486. Up to 4136 conditions per place. [2022-11-16 11:34:57,361 INFO L137 encePairwiseOnDemand]: 289/300 looper letters, 195 selfloop transitions, 30 changer transitions 17/480 dead transitions. [2022-11-16 11:34:57,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 480 transitions, 2898 flow [2022-11-16 11:34:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:34:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:34:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2045 transitions. [2022-11-16 11:34:57,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7574074074074074 [2022-11-16 11:34:57,365 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2045 transitions. [2022-11-16 11:34:57,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2045 transitions. [2022-11-16 11:34:57,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:34:57,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2045 transitions. [2022-11-16 11:34:57,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 227.22222222222223) internal successors, (2045), 9 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:57,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:57,375 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 300.0) internal successors, (3000), 10 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:57,376 INFO L175 Difference]: Start difference. First operand has 344 places, 423 transitions, 2100 flow. Second operand 9 states and 2045 transitions. [2022-11-16 11:34:57,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 480 transitions, 2898 flow [2022-11-16 11:34:57,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 480 transitions, 2888 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:34:57,432 INFO L231 Difference]: Finished difference. Result has 351 places, 424 transitions, 2163 flow [2022-11-16 11:34:57,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2163, PETRI_PLACES=351, PETRI_TRANSITIONS=424} [2022-11-16 11:34:57,433 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 91 predicate places. [2022-11-16 11:34:57,434 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 424 transitions, 2163 flow [2022-11-16 11:34:57,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:57,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:34:57,435 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:57,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:34:57,435 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:34:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2092683705, now seen corresponding path program 1 times [2022-11-16 11:34:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:57,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570586613] [2022-11-16 11:34:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:57,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:34:57,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:57,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570586613] [2022-11-16 11:34:57,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570586613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:57,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036798481] [2022-11-16 11:34:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:57,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:57,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:57,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:57,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:34:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:58,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:34:58,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 11:34:58,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:34:58,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036798481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:58,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:34:58,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 11:34:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042931963] [2022-11-16 11:34:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:58,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:34:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:58,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:34:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:34:58,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 300 [2022-11-16 11:34:58,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 424 transitions, 2163 flow. Second operand has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:58,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:34:58,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 300 [2022-11-16 11:34:58,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:35:03,053 INFO L130 PetriNetUnfolder]: 3686/16937 cut-off events. [2022-11-16 11:35:03,054 INFO L131 PetriNetUnfolder]: For 8851/9635 co-relation queries the response was YES. [2022-11-16 11:35:03,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31356 conditions, 16937 events. 3686/16937 cut-off events. For 8851/9635 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 162786 event pairs, 756 based on Foata normal form. 280/15705 useless extension candidates. Maximal degree in co-relation 28923. Up to 4400 conditions per place. [2022-11-16 11:35:03,197 INFO L137 encePairwiseOnDemand]: 295/300 looper letters, 9 selfloop transitions, 3 changer transitions 89/422 dead transitions. [2022-11-16 11:35:03,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 422 transitions, 2207 flow [2022-11-16 11:35:03,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:35:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:35:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2022-11-16 11:35:03,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8508333333333333 [2022-11-16 11:35:03,200 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2022-11-16 11:35:03,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2022-11-16 11:35:03,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:35:03,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2022-11-16 11:35:03,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:03,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:03,207 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:03,207 INFO L175 Difference]: Start difference. First operand has 351 places, 424 transitions, 2163 flow. Second operand 4 states and 1021 transitions. [2022-11-16 11:35:03,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 422 transitions, 2207 flow [2022-11-16 11:35:03,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 422 transitions, 2169 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:35:03,258 INFO L231 Difference]: Finished difference. Result has 348 places, 333 transitions, 1861 flow [2022-11-16 11:35:03,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1861, PETRI_PLACES=348, PETRI_TRANSITIONS=333} [2022-11-16 11:35:03,259 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 88 predicate places. [2022-11-16 11:35:03,259 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 333 transitions, 1861 flow [2022-11-16 11:35:03,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:03,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:35:03,261 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:03,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:03,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:03,467 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:35:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash 701886303, now seen corresponding path program 2 times [2022-11-16 11:35:03,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:03,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057231983] [2022-11-16 11:35:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:04,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:04,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057231983] [2022-11-16 11:35:04,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057231983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:04,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52733789] [2022-11-16 11:35:04,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:35:04,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:04,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:04,949 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:04,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:35:05,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:35:05,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:05,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:35:05,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-16 11:35:05,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-16 11:35:06,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52733789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:06,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:35:06,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-16 11:35:06,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417961203] [2022-11-16 11:35:06,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:06,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 11:35:06,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:06,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 11:35:06,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:35:06,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 300 [2022-11-16 11:35:06,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 333 transitions, 1861 flow. Second operand has 38 states, 38 states have (on average 203.76315789473685) internal successors, (7743), 38 states have internal predecessors, (7743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:06,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:35:06,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 300 [2022-11-16 11:35:06,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:35:12,178 INFO L130 PetriNetUnfolder]: 52/2085 cut-off events. [2022-11-16 11:35:12,178 INFO L131 PetriNetUnfolder]: For 3825/3825 co-relation queries the response was YES. [2022-11-16 11:35:12,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 2085 events. 52/2085 cut-off events. For 3825/3825 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 11102 event pairs, 0 based on Foata normal form. 12/2097 useless extension candidates. Maximal degree in co-relation 4940. Up to 205 conditions per place. [2022-11-16 11:35:12,185 INFO L137 encePairwiseOnDemand]: 274/300 looper letters, 253 selfloop transitions, 269 changer transitions 0/630 dead transitions. [2022-11-16 11:35:12,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 630 transitions, 4062 flow [2022-11-16 11:35:12,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-16 11:35:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-11-16 11:35:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 27526 transitions. [2022-11-16 11:35:12,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6796543209876543 [2022-11-16 11:35:12,228 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 27526 transitions. [2022-11-16 11:35:12,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 27526 transitions. [2022-11-16 11:35:12,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:35:12,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 27526 transitions. [2022-11-16 11:35:12,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 203.8962962962963) internal successors, (27526), 135 states have internal predecessors, (27526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:12,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 300.0) internal successors, (40800), 136 states have internal predecessors, (40800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:12,335 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 300.0) internal successors, (40800), 136 states have internal predecessors, (40800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:12,335 INFO L175 Difference]: Start difference. First operand has 348 places, 333 transitions, 1861 flow. Second operand 135 states and 27526 transitions. [2022-11-16 11:35:12,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 630 transitions, 4062 flow [2022-11-16 11:35:12,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 630 transitions, 3967 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 11:35:12,374 INFO L231 Difference]: Finished difference. Result has 403 places, 427 transitions, 2848 flow [2022-11-16 11:35:12,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=2848, PETRI_PLACES=403, PETRI_TRANSITIONS=427} [2022-11-16 11:35:12,376 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 143 predicate places. [2022-11-16 11:35:12,376 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 427 transitions, 2848 flow [2022-11-16 11:35:12,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 203.76315789473685) internal successors, (7743), 38 states have internal predecessors, (7743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:12,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:35:12,378 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:12,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 11:35:12,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:35:12,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:35:12,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:12,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2019663882, now seen corresponding path program 1 times [2022-11-16 11:35:12,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:12,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121402415] [2022-11-16 11:35:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:12,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:14,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:14,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121402415] [2022-11-16 11:35:14,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121402415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:14,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648927058] [2022-11-16 11:35:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:14,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:14,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:14,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:14,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:35:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:14,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 11:35:14,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:14,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:16,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648927058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:16,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:35:16,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 71 [2022-11-16 11:35:16,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234224490] [2022-11-16 11:35:16,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:16,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-16 11:35:16,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:16,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-16 11:35:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2022-11-16 11:35:16,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 300 [2022-11-16 11:35:16,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 427 transitions, 2848 flow. Second operand has 72 states, 72 states have (on average 223.44444444444446) internal successors, (16088), 72 states have internal predecessors, (16088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:16,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:35:16,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 300 [2022-11-16 11:35:16,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:35:22,203 INFO L130 PetriNetUnfolder]: 71/2229 cut-off events. [2022-11-16 11:35:22,203 INFO L131 PetriNetUnfolder]: For 6286/6286 co-relation queries the response was YES. [2022-11-16 11:35:22,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 2229 events. 71/2229 cut-off events. For 6286/6286 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8916 event pairs, 0 based on Foata normal form. 18/2247 useless extension candidates. Maximal degree in co-relation 5627. Up to 217 conditions per place. [2022-11-16 11:35:22,222 INFO L137 encePairwiseOnDemand]: 282/300 looper letters, 497 selfloop transitions, 380 changer transitions 0/1069 dead transitions. [2022-11-16 11:35:22,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 1069 transitions, 8659 flow [2022-11-16 11:35:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-16 11:35:22,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-11-16 11:35:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 23775 transitions. [2022-11-16 11:35:22,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620192307692307 [2022-11-16 11:35:22,268 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 23775 transitions. [2022-11-16 11:35:22,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 23775 transitions. [2022-11-16 11:35:22,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:35:22,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 23775 transitions. [2022-11-16 11:35:22,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 228.60576923076923) internal successors, (23775), 104 states have internal predecessors, (23775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:22,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 300.0) internal successors, (31500), 105 states have internal predecessors, (31500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:22,402 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 300.0) internal successors, (31500), 105 states have internal predecessors, (31500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:22,402 INFO L175 Difference]: Start difference. First operand has 403 places, 427 transitions, 2848 flow. Second operand 104 states and 23775 transitions. [2022-11-16 11:35:22,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 1069 transitions, 8659 flow [2022-11-16 11:35:22,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1069 transitions, 8020 flow, removed 196 selfloop flow, removed 29 redundant places. [2022-11-16 11:35:22,475 INFO L231 Difference]: Finished difference. Result has 496 places, 630 transitions, 5389 flow [2022-11-16 11:35:22,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=5389, PETRI_PLACES=496, PETRI_TRANSITIONS=630} [2022-11-16 11:35:22,476 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 236 predicate places. [2022-11-16 11:35:22,477 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 630 transitions, 5389 flow [2022-11-16 11:35:22,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 223.44444444444446) internal successors, (16088), 72 states have internal predecessors, (16088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:22,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:35:22,482 INFO L209 CegarLoopForPetriNet]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:22,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:22,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:35:22,690 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-16 11:35:22,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash -22599414, now seen corresponding path program 2 times [2022-11-16 11:35:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:22,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843309546] [2022-11-16 11:35:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:28,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:28,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843309546] [2022-11-16 11:35:28,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843309546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:35:28,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156397805] [2022-11-16 11:35:28,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:35:28,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:28,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:35:28,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:35:28,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:35:28,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:35:28,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:28,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:35:28,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-16 11:35:29,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-16 11:35:30,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156397805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:30,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:35:30,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 7, 7] total 77 [2022-11-16 11:35:30,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847975568] [2022-11-16 11:35:30,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-16 11:35:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-16 11:35:30,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=4593, Unknown=0, NotChecked=0, Total=6006 [2022-11-16 11:35:30,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 300 [2022-11-16 11:35:30,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 630 transitions, 5389 flow. Second operand has 78 states, 78 states have (on average 203.73076923076923) internal successors, (15891), 78 states have internal predecessors, (15891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:30,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:35:30,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 300 [2022-11-16 11:35:30,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:35:51,457 INFO L130 PetriNetUnfolder]: 75/2343 cut-off events. [2022-11-16 11:35:51,457 INFO L131 PetriNetUnfolder]: For 6845/6845 co-relation queries the response was YES. [2022-11-16 11:35:51,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6360 conditions, 2343 events. 75/2343 cut-off events. For 6845/6845 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9455 event pairs, 0 based on Foata normal form. 2/2345 useless extension candidates. Maximal degree in co-relation 6314. Up to 209 conditions per place. [2022-11-16 11:35:51,472 INFO L137 encePairwiseOnDemand]: 275/300 looper letters, 0 selfloop transitions, 0 changer transitions 1261/1261 dead transitions. [2022-11-16 11:35:51,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 1261 transitions, 10445 flow [2022-11-16 11:35:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2022-11-16 11:35:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2022-11-16 11:35:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 59923 transitions. [2022-11-16 11:35:51,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6793990929705216 [2022-11-16 11:35:51,581 INFO L72 ComplementDD]: Start complementDD. Operand 294 states and 59923 transitions. [2022-11-16 11:35:51,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 59923 transitions. [2022-11-16 11:35:51,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:35:51,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 294 states and 59923 transitions. [2022-11-16 11:35:51,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 295 states, 294 states have (on average 203.81972789115648) internal successors, (59923), 294 states have internal predecessors, (59923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:51,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 295 states, 295 states have (on average 300.0) internal successors, (88500), 295 states have internal predecessors, (88500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:51,877 INFO L81 ComplementDD]: Finished complementDD. Result has 295 states, 295 states have (on average 300.0) internal successors, (88500), 295 states have internal predecessors, (88500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:51,877 INFO L175 Difference]: Start difference. First operand has 496 places, 630 transitions, 5389 flow. Second operand 294 states and 59923 transitions. [2022-11-16 11:35:51,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 1261 transitions, 10445 flow [2022-11-16 11:35:51,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 1261 transitions, 9943 flow, removed 3 selfloop flow, removed 79 redundant places. [2022-11-16 11:35:51,972 INFO L231 Difference]: Finished difference. Result has 709 places, 0 transitions, 0 flow [2022-11-16 11:35:51,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=4821, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=294, PETRI_FLOW=0, PETRI_PLACES=709, PETRI_TRANSITIONS=0} [2022-11-16 11:35:51,973 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 449 predicate places. [2022-11-16 11:35:51,973 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 0 transitions, 0 flow [2022-11-16 11:35:51,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 203.73076923076923) internal successors, (15891), 78 states have internal predecessors, (15891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:51,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2022-11-16 11:35:51,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-11-16 11:35:51,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-11-16 11:35:51,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-11-16 11:35:51,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-11-16 11:35:51,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-11-16 11:35:51,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-11-16 11:35:51,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-11-16 11:35:51,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-11-16 11:35:51,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-11-16 11:35:51,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-11-16 11:35:51,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-11-16 11:35:51,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-11-16 11:35:51,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-11-16 11:35:51,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-11-16 11:35:51,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-11-16 11:35:51,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-11-16 11:35:51,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-11-16 11:35:51,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-11-16 11:35:51,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-11-16 11:35:51,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-11-16 11:35:51,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-11-16 11:35:51,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2022-11-16 11:35:51,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2022-11-16 11:35:51,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2022-11-16 11:35:51,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-11-16 11:35:51,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-11-16 11:35:51,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-11-16 11:35:51,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-11-16 11:35:51,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-11-16 11:35:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-11-16 11:35:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-11-16 11:35:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-11-16 11:35:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-11-16 11:35:51,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-11-16 11:35:51,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-11-16 11:35:51,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-11-16 11:35:51,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-11-16 11:35:51,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-11-16 11:35:51,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-11-16 11:35:51,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-11-16 11:35:52,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:52,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:35:52,200 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:52,207 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:35:52,207 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:35:52,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:35:52 BasicIcfg [2022-11-16 11:35:52,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:35:52,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:35:52,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:35:52,216 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:35:52,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:34:10" (3/4) ... [2022-11-16 11:35:52,220 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:35:52,227 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 11:35:52,228 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 11:35:52,228 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 11:35:52,245 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-11-16 11:35:52,246 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:35:52,246 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:35:52,247 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:35:52,336 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:35:52,336 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:35:52,338 INFO L158 Benchmark]: Toolchain (without parser) took 104485.69ms. Allocated memory was 96.5MB in the beginning and 11.0GB in the end (delta: 10.9GB). Free memory was 55.2MB in the beginning and 6.5GB in the end (delta: -6.5GB). Peak memory consumption was 4.4GB. Max. memory is 16.1GB. [2022-11-16 11:35:52,338 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:35:52,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.68ms. Allocated memory is still 96.5MB. Free memory was 55.0MB in the beginning and 70.0MB in the end (delta: -15.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:35:52,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.71ms. Allocated memory is still 96.5MB. Free memory was 70.0MB in the beginning and 67.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:35:52,340 INFO L158 Benchmark]: Boogie Preprocessor took 89.73ms. Allocated memory is still 96.5MB. Free memory was 67.2MB in the beginning and 64.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:35:52,340 INFO L158 Benchmark]: RCFGBuilder took 1617.14ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 64.8MB in the beginning and 60.5MB in the end (delta: 4.3MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2022-11-16 11:35:52,341 INFO L158 Benchmark]: TraceAbstraction took 102042.29ms. Allocated memory was 117.4MB in the beginning and 11.0GB in the end (delta: 10.8GB). Free memory was 59.9MB in the beginning and 6.5GB in the end (delta: -6.5GB). Peak memory consumption was 4.4GB. Max. memory is 16.1GB. [2022-11-16 11:35:52,341 INFO L158 Benchmark]: Witness Printer took 120.63ms. Allocated memory is still 11.0GB. Free memory was 6.5GB in the beginning and 6.5GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:35:52,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 502.68ms. Allocated memory is still 96.5MB. Free memory was 55.0MB in the beginning and 70.0MB in the end (delta: -15.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.71ms. Allocated memory is still 96.5MB. Free memory was 70.0MB in the beginning and 67.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.73ms. Allocated memory is still 96.5MB. Free memory was 67.2MB in the beginning and 64.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1617.14ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 64.8MB in the beginning and 60.5MB in the end (delta: 4.3MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. * TraceAbstraction took 102042.29ms. Allocated memory was 117.4MB in the beginning and 11.0GB in the end (delta: 10.8GB). Free memory was 59.9MB in the beginning and 6.5GB in the end (delta: -6.5GB). Peak memory consumption was 4.4GB. Max. memory is 16.1GB. * Witness Printer took 120.63ms. Allocated memory is still 11.0GB. Free memory was 6.5GB in the beginning and 6.5GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 99]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 99]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 172]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 327 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 101.8s, OverallIterations: 18, TraceHistogramMax: 35, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 77.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12383 SdHoareTripleChecker+Valid, 8.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12383 mSDsluCounter, 1463 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1198 mSDsCounter, 1522 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6292 IncrementalHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1522 mSolverCounterUnsat, 265 mSDtfsCounter, 6292 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3880 GetRequests, 2995 SyntacticMatches, 15 SemanticMatches, 870 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67407 ImplicationChecksByTransitivity, 32.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5389occurred in iteration=17, InterpolantAutomatonStates: 705, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 4851 NumberOfCodeBlocks, 4383 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 6105 ConstructedInterpolants, 0 QuantifiedInterpolants, 13541 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2802 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 33 InterpolantComputations, 12 PerfectInterpolantSequences, 12060/22882 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:35:52,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52571718-6fb0-45cf-8008-f83c7be8c070/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE