./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:53:25,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:53:25,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:53:25,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:53:25,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:53:25,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:53:25,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:53:25,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:53:25,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:53:25,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:53:25,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:53:25,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:53:25,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:53:25,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:53:25,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:53:25,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:53:25,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:53:25,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:53:25,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:53:25,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:53:25,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:53:25,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:53:25,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:53:25,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:53:25,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:53:25,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:53:25,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:53:25,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:53:25,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:53:25,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:53:25,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:53:25,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:53:25,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:53:25,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:53:25,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:53:25,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:53:25,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:53:25,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:53:25,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:53:25,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:53:25,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:53:25,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:53:25,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:53:25,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:53:25,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:53:25,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:53:25,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:53:25,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:53:25,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:53:25,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:53:25,809 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:53:25,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:53:25,810 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:53:25,810 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:53:25,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:53:25,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:53:25,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:53:25,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:53:25,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:53:25,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:53:25,812 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:53:25,812 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:53:25,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:53:25,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:53:25,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:53:25,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:53:25,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:53:25,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:53:25,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:25,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:53:25,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:53:25,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:53:25,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:53:25,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:53:25,831 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:53:25,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:53:25,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:53:25,831 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_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2022-11-18 19:53:26,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:53:26,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:53:26,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:53:26,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:53:26,123 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:53:26,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-18 19:53:26,193 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/data/f7ae698ff/41b611f9b9fc4ba29a48af28ad003fa8/FLAG7cd772011 [2022-11-18 19:53:26,636 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:53:26,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-18 19:53:26,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/data/f7ae698ff/41b611f9b9fc4ba29a48af28ad003fa8/FLAG7cd772011 [2022-11-18 19:53:27,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/data/f7ae698ff/41b611f9b9fc4ba29a48af28ad003fa8 [2022-11-18 19:53:27,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:53:27,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:53:27,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:27,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:53:27,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:53:27,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b612a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27, skipping insertion in model container [2022-11-18 19:53:27,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:53:27,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:53:27,299 WARN L234 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_5f428700-f6bf-48c1-b47b-ecbe9808c357/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-18 19:53:27,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:27,315 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:53:27,351 WARN L234 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_5f428700-f6bf-48c1-b47b-ecbe9808c357/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-18 19:53:27,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:27,375 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:53:27,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27 WrapperNode [2022-11-18 19:53:27,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:27,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:27,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:53:27,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:53:27,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,427 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 418 [2022-11-18 19:53:27,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:27,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:53:27,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:53:27,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:53:27,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:53:27,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:53:27,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:53:27,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:53:27,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (1/1) ... [2022-11-18 19:53:27,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:27,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:27,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:53:27,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:53:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:53:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:53:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:53:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:53:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:53:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:53:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:53:27,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:53:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:53:27,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:53:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:53:27,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:53:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:53:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:53:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:53:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:53:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:53:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:53:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:53:27,593 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:53:27,806 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:53:27,808 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:53:28,548 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:53:29,169 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:53:29,169 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-18 19:53:29,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:29 BoogieIcfgContainer [2022-11-18 19:53:29,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:53:29,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:53:29,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:53:29,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:53:29,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:53:27" (1/3) ... [2022-11-18 19:53:29,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a634be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:29, skipping insertion in model container [2022-11-18 19:53:29,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:27" (2/3) ... [2022-11-18 19:53:29,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a634be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:29, skipping insertion in model container [2022-11-18 19:53:29,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:29" (3/3) ... [2022-11-18 19:53:29,191 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-11-18 19:53:29,202 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:53:29,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:53:29,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-18 19:53:29,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:53:29,439 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:53:29,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 397 transitions, 818 flow [2022-11-18 19:53:29,753 INFO L130 PetriNetUnfolder]: 35/394 cut-off events. [2022-11-18 19:53:29,753 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:53:29,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 394 events. 35/394 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 894 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 316. Up to 2 conditions per place. [2022-11-18 19:53:29,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 397 transitions, 818 flow [2022-11-18 19:53:29,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 373 transitions, 761 flow [2022-11-18 19:53:29,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:53:29,784 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;@15c4126e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:53:29,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-11-18 19:53:29,793 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2022-11-18 19:53:29,794 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:53:29,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:29,794 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] [2022-11-18 19:53:29,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-18 19:53:29,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:29,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1486072453, now seen corresponding path program 1 times [2022-11-18 19:53:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:29,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816530452] [2022-11-18 19:53:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:29,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:30,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:30,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816530452] [2022-11-18 19:53:30,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816530452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:30,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:30,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:30,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930921928] [2022-11-18 19:53:30,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:30,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:30,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:30,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:30,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 397 [2022-11-18 19:53:30,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 373 transitions, 761 flow. Second operand has 4 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:30,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:30,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 397 [2022-11-18 19:53:30,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:32,707 INFO L130 PetriNetUnfolder]: 1261/5851 cut-off events. [2022-11-18 19:53:32,708 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2022-11-18 19:53:32,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 5851 events. 1261/5851 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 65258 event pairs, 910 based on Foata normal form. 518/4635 useless extension candidates. Maximal degree in co-relation 3327. Up to 794 conditions per place. [2022-11-18 19:53:32,772 INFO L137 encePairwiseOnDemand]: 353/397 looper letters, 88 selfloop transitions, 14 changer transitions 8/395 dead transitions. [2022-11-18 19:53:32,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 395 transitions, 1024 flow [2022-11-18 19:53:32,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1720 transitions. [2022-11-18 19:53:32,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8664987405541562 [2022-11-18 19:53:32,792 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1720 transitions. [2022-11-18 19:53:32,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1720 transitions. [2022-11-18 19:53:32,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:32,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1720 transitions. [2022-11-18 19:53:32,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:32,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:32,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:32,820 INFO L175 Difference]: Start difference. First operand has 349 places, 373 transitions, 761 flow. Second operand 5 states and 1720 transitions. [2022-11-18 19:53:32,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 395 transitions, 1024 flow [2022-11-18 19:53:32,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 395 transitions, 1006 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:32,841 INFO L231 Difference]: Finished difference. Result has 345 places, 352 transitions, 792 flow [2022-11-18 19:53:32,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=792, PETRI_PLACES=345, PETRI_TRANSITIONS=352} [2022-11-18 19:53:32,852 INFO L288 CegarLoopForPetriNet]: 349 programPoint places, -4 predicate places. [2022-11-18 19:53:32,853 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 352 transitions, 792 flow [2022-11-18 19:53:32,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:32,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:32,854 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] [2022-11-18 19:53:32,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:53:32,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-18 19:53:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:32,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1594053183, now seen corresponding path program 1 times [2022-11-18 19:53:32,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:32,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077645679] [2022-11-18 19:53:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:32,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:33,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:33,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077645679] [2022-11-18 19:53:33,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077645679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:33,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394604961] [2022-11-18 19:53:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:33,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:33,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:33,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:33,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:53:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:33,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:33,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:33,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394604961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:33,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:33,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:53:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528292774] [2022-11-18 19:53:33,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:33,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:53:33,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:53:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:53:33,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 397 [2022-11-18 19:53:33,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 352 transitions, 792 flow. Second operand has 12 states, 12 states have (on average 316.6666666666667) internal successors, (3800), 12 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:33,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:33,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 397 [2022-11-18 19:53:33,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:38,908 INFO L130 PetriNetUnfolder]: 3151/14472 cut-off events. [2022-11-18 19:53:38,908 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-11-18 19:53:38,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18875 conditions, 14472 events. 3151/14472 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 187078 event pairs, 2275 based on Foata normal form. 9/10186 useless extension candidates. Maximal degree in co-relation 14736. Up to 785 conditions per place. [2022-11-18 19:53:39,054 INFO L137 encePairwiseOnDemand]: 374/397 looper letters, 184 selfloop transitions, 62 changer transitions 0/531 dead transitions. [2022-11-18 19:53:39,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 531 transitions, 1744 flow [2022-11-18 19:53:39,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:53:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:53:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5907 transitions. [2022-11-18 19:53:39,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8266162888329135 [2022-11-18 19:53:39,067 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5907 transitions. [2022-11-18 19:53:39,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5907 transitions. [2022-11-18 19:53:39,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:39,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5907 transitions. [2022-11-18 19:53:39,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 328.1666666666667) internal successors, (5907), 18 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:39,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 397.0) internal successors, (7543), 19 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:39,103 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 397.0) internal successors, (7543), 19 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:39,103 INFO L175 Difference]: Start difference. First operand has 345 places, 352 transitions, 792 flow. Second operand 18 states and 5907 transitions. [2022-11-18 19:53:39,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 531 transitions, 1744 flow [2022-11-18 19:53:39,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 531 transitions, 1736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:39,114 INFO L231 Difference]: Finished difference. Result has 357 places, 394 transitions, 1154 flow [2022-11-18 19:53:39,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1154, PETRI_PLACES=357, PETRI_TRANSITIONS=394} [2022-11-18 19:53:39,116 INFO L288 CegarLoopForPetriNet]: 349 programPoint places, 8 predicate places. [2022-11-18 19:53:39,116 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 394 transitions, 1154 flow [2022-11-18 19:53:39,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 316.6666666666667) internal successors, (3800), 12 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:39,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:39,120 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] [2022-11-18 19:53:39,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:53:39,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:39,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-18 19:53:39,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2123959915, now seen corresponding path program 1 times [2022-11-18 19:53:39,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:39,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204221710] [2022-11-18 19:53:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:39,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:39,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204221710] [2022-11-18 19:53:39,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204221710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:39,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185416290] [2022-11-18 19:53:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:39,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:39,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:39,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:53:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:39,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:39,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:39,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:39,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185416290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:39,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:39,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:53:39,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134384594] [2022-11-18 19:53:39,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:39,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:39,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 397 [2022-11-18 19:53:39,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 394 transitions, 1154 flow. Second operand has 6 states, 6 states have (on average 316.3333333333333) internal successors, (1898), 6 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:39,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:39,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 397 [2022-11-18 19:53:39,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:43,542 INFO L130 PetriNetUnfolder]: 3151/14460 cut-off events. [2022-11-18 19:53:43,542 INFO L131 PetriNetUnfolder]: For 405/405 co-relation queries the response was YES. [2022-11-18 19:53:43,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18931 conditions, 14460 events. 3151/14460 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 186749 event pairs, 2275 based on Foata normal form. 12/10177 useless extension candidates. Maximal degree in co-relation 15099. Up to 3068 conditions per place. [2022-11-18 19:53:43,667 INFO L137 encePairwiseOnDemand]: 380/397 looper letters, 89 selfloop transitions, 43 changer transitions 0/417 dead transitions. [2022-11-18 19:53:43,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 417 transitions, 1419 flow [2022-11-18 19:53:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:53:43,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2300 transitions. [2022-11-18 19:53:43,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8276358402302987 [2022-11-18 19:53:43,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2300 transitions. [2022-11-18 19:53:43,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2300 transitions. [2022-11-18 19:53:43,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:43,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2300 transitions. [2022-11-18 19:53:43,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 328.57142857142856) internal successors, (2300), 7 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:43,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:43,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:43,687 INFO L175 Difference]: Start difference. First operand has 357 places, 394 transitions, 1154 flow. Second operand 7 states and 2300 transitions. [2022-11-18 19:53:43,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 417 transitions, 1419 flow [2022-11-18 19:53:43,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 417 transitions, 1303 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:43,701 INFO L231 Difference]: Finished difference. Result has 351 places, 382 transitions, 1043 flow [2022-11-18 19:53:43,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1043, PETRI_PLACES=351, PETRI_TRANSITIONS=382} [2022-11-18 19:53:43,705 INFO L288 CegarLoopForPetriNet]: 349 programPoint places, 2 predicate places. [2022-11-18 19:53:43,705 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 382 transitions, 1043 flow [2022-11-18 19:53:43,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 316.3333333333333) internal successors, (1898), 6 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:43,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:43,716 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] [2022-11-18 19:53:43,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:43,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:43,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-18 19:53:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 293966213, now seen corresponding path program 2 times [2022-11-18 19:53:43,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:43,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830427538] [2022-11-18 19:53:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:43,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:44,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:44,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830427538] [2022-11-18 19:53:44,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830427538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:44,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887416343] [2022-11-18 19:53:44,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:44,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:44,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:44,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:44,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:53:44,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:53:44,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:44,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:53:44,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:53:44,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:53:44,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887416343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:44,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:44,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 19:53:44,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688915917] [2022-11-18 19:53:44,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:44,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:53:44,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:53:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:53:44,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 397 [2022-11-18 19:53:44,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 382 transitions, 1043 flow. Second operand has 18 states, 18 states have (on average 292.6111111111111) internal successors, (5267), 18 states have internal predecessors, (5267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:44,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:44,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 397 [2022-11-18 19:53:44,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:59,821 INFO L130 PetriNetUnfolder]: 15898/57317 cut-off events. [2022-11-18 19:53:59,822 INFO L131 PetriNetUnfolder]: For 1009/1009 co-relation queries the response was YES. [2022-11-18 19:54:00,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78814 conditions, 57317 events. 15898/57317 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 2255. Compared 833776 event pairs, 11018 based on Foata normal form. 6/38388 useless extension candidates. Maximal degree in co-relation 45052. Up to 1526 conditions per place. [2022-11-18 19:54:00,558 INFO L137 encePairwiseOnDemand]: 369/397 looper letters, 471 selfloop transitions, 93 changer transitions 0/824 dead transitions. [2022-11-18 19:54:00,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 824 transitions, 3221 flow [2022-11-18 19:54:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 19:54:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 19:54:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 14731 transitions. [2022-11-18 19:54:00,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7572610908343186 [2022-11-18 19:54:00,596 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 14731 transitions. [2022-11-18 19:54:00,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 14731 transitions. [2022-11-18 19:54:00,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:00,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 14731 transitions. [2022-11-18 19:54:00,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 300.6326530612245) internal successors, (14731), 49 states have internal predecessors, (14731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:00,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 397.0) internal successors, (19850), 50 states have internal predecessors, (19850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:00,705 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 397.0) internal successors, (19850), 50 states have internal predecessors, (19850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:00,705 INFO L175 Difference]: Start difference. First operand has 351 places, 382 transitions, 1043 flow. Second operand 49 states and 14731 transitions. [2022-11-18 19:54:00,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 824 transitions, 3221 flow [2022-11-18 19:54:00,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 824 transitions, 3152 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:54:00,724 INFO L231 Difference]: Finished difference. Result has 402 places, 415 transitions, 1385 flow [2022-11-18 19:54:00,724 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1385, PETRI_PLACES=402, PETRI_TRANSITIONS=415} [2022-11-18 19:54:00,726 INFO L288 CegarLoopForPetriNet]: 349 programPoint places, 53 predicate places. [2022-11-18 19:54:00,726 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 415 transitions, 1385 flow [2022-11-18 19:54:00,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 292.6111111111111) internal successors, (5267), 18 states have internal predecessors, (5267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:00,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:00,729 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] [2022-11-18 19:54:00,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:00,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f428700-f6bf-48c1-b47b-ecbe9808c357/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 19:54:00,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-18 19:54:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 906517914, now seen corresponding path program 1 times [2022-11-18 19:54:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:00,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707592316] [2022-11-18 19:54:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:01,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:01,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707592316] [2022-11-18 19:54:01,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707592316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:01,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:01,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:54:01,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279646584] [2022-11-18 19:54:01,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:01,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:54:01,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:54:01,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:54:01,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 397 [2022-11-18 19:54:01,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 415 transitions, 1385 flow. Second operand has 4 states, 4 states have (on average 339.5) internal successors, (1358), 4 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:01,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:01,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 397 [2022-11-18 19:54:01,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:10,945 INFO L130 PetriNetUnfolder]: 8807/39972 cut-off events. [2022-11-18 19:54:10,945 INFO L131 PetriNetUnfolder]: For 1071/1071 co-relation queries the response was YES. [2022-11-18 19:54:11,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52230 conditions, 39972 events. 8807/39972 cut-off events. For 1071/1071 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 586024 event pairs, 6370 based on Foata normal form. 0/28002 useless extension candidates. Maximal degree in co-relation 48446. Up to 5364 conditions per place. [2022-11-18 19:54:11,337 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 56 selfloop transitions, 4 changer transitions 0/443 dead transitions. [2022-11-18 19:54:11,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 443 transitions, 1567 flow [2022-11-18 19:54:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:54:11,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:54:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1752 transitions. [2022-11-18 19:54:11,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8826196473551637 [2022-11-18 19:54:11,344 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1752 transitions. [2022-11-18 19:54:11,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1752 transitions. [2022-11-18 19:54:11,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:11,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1752 transitions. [2022-11-18 19:54:11,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 350.4) internal successors, (1752), 5 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,353 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,354 INFO L175 Difference]: Start difference. First operand has 402 places, 415 transitions, 1385 flow. Second operand 5 states and 1752 transitions. [2022-11-18 19:54:11,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 443 transitions, 1567 flow [2022-11-18 19:54:11,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 443 transitions, 1450 flow, removed 15 selfloop flow, removed 14 redundant places. [2022-11-18 19:54:11,366 INFO L231 Difference]: Finished difference. Result has 395 places, 418 transitions, 1298 flow [2022-11-18 19:54:11,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1298, PETRI_PLACES=395, PETRI_TRANSITIONS=418} [2022-11-18 19:54:11,368 INFO L288 CegarLoopForPetriNet]: 349 programPoint places, 46 predicate places. [2022-11-18 19:54:11,368 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 418 transitions, 1298 flow [2022-11-18 19:54:11,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 339.5) internal successors, (1358), 4 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:11,369 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] [2022-11-18 19:54:11,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:54:11,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-11-18 19:54:11,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash -733952557, now seen corresponding path program 1 times [2022-11-18 19:54:11,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:11,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481494285] [2022-11-18 19:54:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:11,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:11,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:11,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481494285] [2022-11-18 19:54:11,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481494285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:11,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:11,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:54:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131359325] [2022-11-18 19:54:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:11,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:54:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:54:11,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:11,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 397 [2022-11-18 19:54:11,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 418 transitions, 1298 flow. Second operand has 7 states, 7 states have (on average 303.42857142857144) internal successors, (2124), 7 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:11,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:11,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 397 [2022-11-18 19:54:11,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand