./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/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_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/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 64bit --witnessprinter.graph.data.programhash de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- 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 19:56:34,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:56:34,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:56:34,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:56:34,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:56:34,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:56:34,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:56:34,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:56:34,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:56:34,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:56:34,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:56:34,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:56:34,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:56:34,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:56:34,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:56:34,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:56:34,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:56:34,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:56:34,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:56:34,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:56:34,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:56:34,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:56:34,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:56:34,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:56:34,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:56:34,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:56:34,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:56:34,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:56:34,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:56:34,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:56:34,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:56:34,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:56:34,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:56:34,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:56:34,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:56:34,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:56:34,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:56:34,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:56:34,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:56:34,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:56:34,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:56:34,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-18 19:56:34,988 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:56:34,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:56:34,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:56:34,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:56:34,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:56:34,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:56:34,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:56:34,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:56:34,992 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:56:34,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:56:34,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:56:34,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:56:34,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:56:34,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:56:34,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:56:34,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:56:34,995 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:56:34,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:56:34,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:56:34,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:56:34,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:56:34,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:56:34,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:56:34,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:56:34,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:56:34,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:56:34,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:56:34,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:56:35,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:56:35,000 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:56:35,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:56:35,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:56:35,001 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_7d779ba7-796d-4f51-9d70-2c49246c2e43/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2022-11-18 19:56:35,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:56:35,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:56:35,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:56:35,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:56:35,398 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:56:35,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-numeric/rec_counter1.c [2022-11-18 19:56:35,479 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/data/837c6f03b/dea3fc884712449fbedc704537fdfe06/FLAG64d5c77b6 [2022-11-18 19:56:35,975 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:56:35,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/sv-benchmarks/c/termination-numeric/rec_counter1.c [2022-11-18 19:56:36,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/data/837c6f03b/dea3fc884712449fbedc704537fdfe06/FLAG64d5c77b6 [2022-11-18 19:56:36,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/data/837c6f03b/dea3fc884712449fbedc704537fdfe06 [2022-11-18 19:56:36,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:56:36,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:56:36,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:56:36,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:56:36,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:56:36,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a0fc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36, skipping insertion in model container [2022-11-18 19:56:36,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:56:36,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:56:36,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:56:36,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:56:36,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:56:36,679 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:56:36,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36 WrapperNode [2022-11-18 19:56:36,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:56:36,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:56:36,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:56:36,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:56:36,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,716 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2022-11-18 19:56:36,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:56:36,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:56:36,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:56:36,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:56:36,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:56:36,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:56:36,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:56:36,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:56:36,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (1/1) ... [2022-11-18 19:56:36,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:56:36,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:36,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:56:36,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:56:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-11-18 19:56:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-11-18 19:56:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:56:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:56:36,899 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:56:36,901 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:56:37,111 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:56:37,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:56:37,120 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:56:37,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:56:37 BoogieIcfgContainer [2022-11-18 19:56:37,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:56:37,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:56:37,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:56:37,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:56:37,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:56:36" (1/3) ... [2022-11-18 19:56:37,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e84ac66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:56:37, skipping insertion in model container [2022-11-18 19:56:37,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:36" (2/3) ... [2022-11-18 19:56:37,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e84ac66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:56:37, skipping insertion in model container [2022-11-18 19:56:37,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:56:37" (3/3) ... [2022-11-18 19:56:37,132 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2022-11-18 19:56:37,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:56:37,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 19:56:37,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:56:37,251 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;@25e4e0b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:56:37,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 19:56:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:56:37,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:56:37,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:37,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:37,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1088965814, now seen corresponding path program 1 times [2022-11-18 19:56:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:37,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115538959] [2022-11-18 19:56:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:37,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:37,569 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 19:56:37,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:37,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115538959] [2022-11-18 19:56:37,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115538959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:37,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:37,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:56:37,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940115009] [2022-11-18 19:56:37,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:37,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:56:37,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:37,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:56:37,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:56:37,619 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:37,779 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-11-18 19:56:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:37,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:56:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:37,798 INFO L225 Difference]: With dead ends: 43 [2022-11-18 19:56:37,799 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 19:56:37,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:56:37,816 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:37,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 42 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:56:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 19:56:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-18 19:56:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:56:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-11-18 19:56:37,875 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2022-11-18 19:56:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:37,876 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-11-18 19:56:37,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-11-18 19:56:37,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:56:37,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:37,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:56:37,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:37,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:37,879 INFO L85 PathProgramCache]: Analyzing trace with hash -601798096, now seen corresponding path program 1 times [2022-11-18 19:56:37,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:37,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531687826] [2022-11-18 19:56:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:37,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:37,945 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 19:56:37,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:37,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531687826] [2022-11-18 19:56:37,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531687826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:37,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:37,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:56:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777180218] [2022-11-18 19:56:37,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:37,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:56:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:37,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:56:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:56:37,954 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:38,037 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-11-18 19:56:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:38,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:56:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:38,042 INFO L225 Difference]: With dead ends: 42 [2022-11-18 19:56:38,044 INFO L226 Difference]: Without dead ends: 37 [2022-11-18 19:56:38,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:56:38,047 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:38,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:56:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-18 19:56:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-18 19:56:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:56:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-18 19:56:38,067 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2022-11-18 19:56:38,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:38,069 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-18 19:56:38,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,070 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-11-18 19:56:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:56:38,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:38,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:38,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:56:38,076 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash 758423009, now seen corresponding path program 1 times [2022-11-18 19:56:38,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:38,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797345955] [2022-11-18 19:56:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:38,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:38,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:38,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797345955] [2022-11-18 19:56:38,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797345955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:38,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745441630] [2022-11-18 19:56:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:38,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:38,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:38,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:38,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:56:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:38,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:56:38,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:38,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:38,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745441630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:38,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:38,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-18 19:56:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274652773] [2022-11-18 19:56:38,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:56:38,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:56:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:56:38,622 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:38,737 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-11-18 19:56:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:56:38,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:56:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:38,740 INFO L225 Difference]: With dead ends: 39 [2022-11-18 19:56:38,740 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 19:56:38,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:56:38,742 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 98 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:38,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 69 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:56:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 19:56:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-11-18 19:56:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:56:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-11-18 19:56:38,753 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 13 [2022-11-18 19:56:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:38,753 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-18 19:56:38,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-11-18 19:56:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:56:38,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:38,755 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:38,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:38,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:38,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452250, now seen corresponding path program 1 times [2022-11-18 19:56:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:38,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209522746] [2022-11-18 19:56:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:38,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:56:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:56:39,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:39,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209522746] [2022-11-18 19:56:39,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209522746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:39,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:39,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:39,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292504781] [2022-11-18 19:56:39,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:39,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:39,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:39,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:39,027 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:56:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:39,064 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-11-18 19:56:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:39,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-18 19:56:39,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:39,066 INFO L225 Difference]: With dead ends: 48 [2022-11-18 19:56:39,066 INFO L226 Difference]: Without dead ends: 47 [2022-11-18 19:56:39,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:56:39,068 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:39,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:56:39,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-18 19:56:39,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2022-11-18 19:56:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 31 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:56:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-18 19:56:39,078 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 16 [2022-11-18 19:56:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:39,078 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-18 19:56:39,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:56:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-18 19:56:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:56:39,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:39,079 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:39,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:56:39,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:39,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:39,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452195, now seen corresponding path program 1 times [2022-11-18 19:56:39,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:39,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380619254] [2022-11-18 19:56:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:39,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:56:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:56:39,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:39,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380619254] [2022-11-18 19:56:39,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380619254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:39,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:39,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:56:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236766035] [2022-11-18 19:56:39,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:39,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:56:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:39,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:56:39,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:56:39,235 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:56:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:39,273 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2022-11-18 19:56:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-18 19:56:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:39,275 INFO L225 Difference]: With dead ends: 64 [2022-11-18 19:56:39,275 INFO L226 Difference]: Without dead ends: 42 [2022-11-18 19:56:39,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:56:39,277 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:39,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:56:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-18 19:56:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-18 19:56:39,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 35 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 19:56:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-11-18 19:56:39,286 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 16 [2022-11-18 19:56:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:39,287 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-11-18 19:56:39,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:56:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-11-18 19:56:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:56:39,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:39,289 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:39,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:56:39,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:39,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash 468587862, now seen corresponding path program 1 times [2022-11-18 19:56:39,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:39,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710363111] [2022-11-18 19:56:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:56:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:56:39,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710363111] [2022-11-18 19:56:39,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710363111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:39,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:39,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:56:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939901070] [2022-11-18 19:56:39,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:39,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:56:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:56:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:56:39,352 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:56:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:39,370 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-18 19:56:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:56:39,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-18 19:56:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:39,371 INFO L225 Difference]: With dead ends: 42 [2022-11-18 19:56:39,374 INFO L226 Difference]: Without dead ends: 37 [2022-11-18 19:56:39,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:56:39,375 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:39,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:56:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-18 19:56:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-18 19:56:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:56:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-11-18 19:56:39,394 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 17 [2022-11-18 19:56:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:39,395 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-11-18 19:56:39,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:56:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-11-18 19:56:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:56:39,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:39,400 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:39,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:56:39,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:39,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1288772758, now seen corresponding path program 1 times [2022-11-18 19:56:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:39,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073088680] [2022-11-18 19:56:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:39,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:56:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:56:39,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:39,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073088680] [2022-11-18 19:56:39,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073088680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:39,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015777199] [2022-11-18 19:56:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:39,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:39,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:39,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:39,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:56:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:39,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:56:39,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:56:39,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:56:39,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015777199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:39,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:56:39,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2022-11-18 19:56:39,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399794404] [2022-11-18 19:56:39,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:39,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:39,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:39,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:39,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:56:39,849 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:56:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:39,926 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-11-18 19:56:39,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:56:39,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-11-18 19:56:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:39,928 INFO L225 Difference]: With dead ends: 37 [2022-11-18 19:56:39,929 INFO L226 Difference]: Without dead ends: 36 [2022-11-18 19:56:39,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:56:39,930 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:39,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:56:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-18 19:56:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-18 19:56:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:56:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-18 19:56:39,940 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 27 [2022-11-18 19:56:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:39,940 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-18 19:56:39,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:56:39,941 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-18 19:56:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 19:56:39,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:39,942 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:39,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:40,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:56:40,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:40,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:40,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1297249887, now seen corresponding path program 1 times [2022-11-18 19:56:40,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:40,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338209931] [2022-11-18 19:56:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:40,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:56:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 19:56:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:40,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338209931] [2022-11-18 19:56:40,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338209931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:40,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:40,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:56:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107285184] [2022-11-18 19:56:40,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:40,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:56:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:40,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:56:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:56:40,198 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:56:40,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:40,215 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-18 19:56:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:56:40,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-18 19:56:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:40,216 INFO L225 Difference]: With dead ends: 36 [2022-11-18 19:56:40,217 INFO L226 Difference]: Without dead ends: 35 [2022-11-18 19:56:40,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:56:40,218 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:40,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:56:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-18 19:56:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-18 19:56:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:56:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-18 19:56:40,226 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 28 [2022-11-18 19:56:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:40,227 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-18 19:56:40,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:56:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-18 19:56:40,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 19:56:40,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:40,229 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:40,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:56:40,229 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1116627082, now seen corresponding path program 1 times [2022-11-18 19:56:40,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:40,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283978942] [2022-11-18 19:56:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:40,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:40,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:56:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:56:40,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:40,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283978942] [2022-11-18 19:56:40,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283978942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:40,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310732965] [2022-11-18 19:56:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:40,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:40,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:40,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:40,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:56:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:40,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:56:40,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:56:40,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:56:40,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310732965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:40,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:40,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-11-18 19:56:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467189740] [2022-11-18 19:56:40,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:56:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:56:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:56:40,748 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:56:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:41,113 INFO L93 Difference]: Finished difference Result 122 states and 151 transitions. [2022-11-18 19:56:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:56:41,114 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 30 [2022-11-18 19:56:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:41,121 INFO L225 Difference]: With dead ends: 122 [2022-11-18 19:56:41,121 INFO L226 Difference]: Without dead ends: 89 [2022-11-18 19:56:41,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:56:41,128 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 88 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:41,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 129 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:56:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-18 19:56:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2022-11-18 19:56:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:56:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2022-11-18 19:56:41,162 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 30 [2022-11-18 19:56:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:41,164 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2022-11-18 19:56:41,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:56:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2022-11-18 19:56:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-18 19:56:41,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:41,167 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:41,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:41,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:41,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash -244897613, now seen corresponding path program 2 times [2022-11-18 19:56:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:41,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728502835] [2022-11-18 19:56:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:41,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:56:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:42,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:42,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 100 proven. 42 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-18 19:56:42,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:42,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728502835] [2022-11-18 19:56:42,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728502835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:42,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102099925] [2022-11-18 19:56:42,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:56:42,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:42,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:42,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:42,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:56:42,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:56:42,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:42,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:56:42,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-18 19:56:42,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-18 19:56:43,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102099925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:43,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:43,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 23 [2022-11-18 19:56:43,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322667712] [2022-11-18 19:56:43,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:43,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:56:43,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:56:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:56:43,471 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:56:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:43,795 INFO L93 Difference]: Finished difference Result 139 states and 169 transitions. [2022-11-18 19:56:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:56:43,796 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 91 [2022-11-18 19:56:43,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:43,803 INFO L225 Difference]: With dead ends: 139 [2022-11-18 19:56:43,803 INFO L226 Difference]: Without dead ends: 83 [2022-11-18 19:56:43,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 172 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:56:43,809 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:43,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 268 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:56:43,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-18 19:56:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-18 19:56:43,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 74 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:56:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2022-11-18 19:56:43,848 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 91 [2022-11-18 19:56:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:43,849 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2022-11-18 19:56:43,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:56:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2022-11-18 19:56:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 19:56:43,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:43,858 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:43,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:44,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:56:44,064 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:44,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:44,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2079362653, now seen corresponding path program 3 times [2022-11-18 19:56:44,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:44,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830098074] [2022-11-18 19:56:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:56:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 179 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-18 19:56:44,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:44,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830098074] [2022-11-18 19:56:44,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830098074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:44,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361225559] [2022-11-18 19:56:44,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:56:44,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:44,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:44,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:44,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:56:44,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:56:44,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:44,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:56:44,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-18 19:56:44,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-18 19:56:45,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361225559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:45,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:45,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2022-11-18 19:56:45,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935839988] [2022-11-18 19:56:45,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:45,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:56:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:56:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:56:45,276 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:56:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:45,976 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2022-11-18 19:56:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 19:56:45,977 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 87 [2022-11-18 19:56:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:45,980 INFO L225 Difference]: With dead ends: 148 [2022-11-18 19:56:45,980 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 19:56:45,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2022-11-18 19:56:45,983 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 206 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:45,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 161 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:56:45,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 19:56:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2022-11-18 19:56:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 115 states have internal predecessors, (128), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:56:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2022-11-18 19:56:46,015 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 87 [2022-11-18 19:56:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:46,015 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2022-11-18 19:56:46,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 19:56:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2022-11-18 19:56:46,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 19:56:46,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:46,018 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 8, 8, 8, 8, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:46,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:46,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:46,225 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:46,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1902147306, now seen corresponding path program 4 times [2022-11-18 19:56:46,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:46,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039020467] [2022-11-18 19:56:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:46,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:46,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:56:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:46,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:46,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:47,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-18 19:56:47,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:47,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039020467] [2022-11-18 19:56:47,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039020467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:47,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453600436] [2022-11-18 19:56:47,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:56:47,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:47,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:47,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:47,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:56:47,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:56:47,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:47,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:56:47,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-18 19:56:47,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-18 19:56:49,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453600436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:49,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:49,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2022-11-18 19:56:49,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503550839] [2022-11-18 19:56:49,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:49,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 19:56:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 19:56:49,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 19:56:49,127 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-18 19:56:49,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:49,508 INFO L93 Difference]: Finished difference Result 638 states and 722 transitions. [2022-11-18 19:56:49,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 19:56:49,508 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 132 [2022-11-18 19:56:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:49,514 INFO L225 Difference]: With dead ends: 638 [2022-11-18 19:56:49,514 INFO L226 Difference]: Without dead ends: 469 [2022-11-18 19:56:49,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=625, Invalid=2681, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 19:56:49,518 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 107 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:49,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 250 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:56:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-18 19:56:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 230. [2022-11-18 19:56:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 213 states have (on average 1.0938967136150235) internal successors, (233), 213 states have internal predecessors, (233), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 19:56:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 250 transitions. [2022-11-18 19:56:49,550 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 250 transitions. Word has length 132 [2022-11-18 19:56:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:49,552 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 250 transitions. [2022-11-18 19:56:49,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-18 19:56:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 250 transitions. [2022-11-18 19:56:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-18 19:56:49,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:49,557 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:49,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:49,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:49,762 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:49,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:49,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1072440394, now seen corresponding path program 5 times [2022-11-18 19:56:49,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:49,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873295002] [2022-11-18 19:56:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:49,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:56:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1751 proven. 51 refuted. 0 times theorem prover too weak. 1673 trivial. 0 not checked. [2022-11-18 19:56:51,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:51,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873295002] [2022-11-18 19:56:51,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873295002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:51,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815081645] [2022-11-18 19:56:51,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:56:51,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:51,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:51,590 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:51,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:56:51,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-18 19:56:51,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:51,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:56:51,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1319 proven. 88 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-11-18 19:56:51,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1337 proven. 70 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-11-18 19:56:53,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815081645] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:53,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:53,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 27 [2022-11-18 19:56:53,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529537433] [2022-11-18 19:56:53,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:53,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:56:53,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:56:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:56:53,617 INFO L87 Difference]: Start difference. First operand 230 states and 250 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 19:56:54,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:54,327 INFO L93 Difference]: Finished difference Result 492 states and 542 transitions. [2022-11-18 19:56:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:56:54,328 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 262 [2022-11-18 19:56:54,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:54,330 INFO L225 Difference]: With dead ends: 492 [2022-11-18 19:56:54,330 INFO L226 Difference]: Without dead ends: 301 [2022-11-18 19:56:54,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 530 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=365, Invalid=1615, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:56:54,332 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 52 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:54,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 295 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:56:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-18 19:56:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2022-11-18 19:56:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 268 states have (on average 1.078358208955224) internal successors, (289), 268 states have internal predecessors, (289), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 19:56:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 309 transitions. [2022-11-18 19:56:54,367 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 309 transitions. Word has length 262 [2022-11-18 19:56:54,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:54,368 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 309 transitions. [2022-11-18 19:56:54,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 19:56:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 309 transitions. [2022-11-18 19:56:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-18 19:56:54,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:54,374 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:54,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:54,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:54,580 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:56:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash -60644733, now seen corresponding path program 6 times [2022-11-18 19:56:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671953959] [2022-11-18 19:56:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:54,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:56:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:55,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4566 backedges. 1945 proven. 90 refuted. 0 times theorem prover too weak. 2531 trivial. 0 not checked. [2022-11-18 19:56:56,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:56,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671953959] [2022-11-18 19:56:56,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671953959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:56,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178013842] [2022-11-18 19:56:56,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:56:56,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:56,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:56,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:56,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:56:56,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-11-18 19:56:56,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:56,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:56:56,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4566 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2022-11-18 19:56:56,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4566 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2022-11-18 19:56:57,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178013842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:57,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:57,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 47 [2022-11-18 19:56:57,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253828506] [2022-11-18 19:56:57,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:57,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 19:56:57,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:57,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 19:56:57,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 19:56:57,886 INFO L87 Difference]: Start difference. First operand 288 states and 309 transitions. Second operand has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:57:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:01,012 INFO L93 Difference]: Finished difference Result 1217 states and 1388 transitions. [2022-11-18 19:57:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-18 19:57:01,012 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 293 [2022-11-18 19:57:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:01,018 INFO L225 Difference]: With dead ends: 1217 [2022-11-18 19:57:01,018 INFO L226 Difference]: Without dead ends: 971 [2022-11-18 19:57:01,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3577 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2102, Invalid=12178, Unknown=0, NotChecked=0, Total=14280 [2022-11-18 19:57:01,025 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 536 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:01,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 374 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:57:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-11-18 19:57:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 380. [2022-11-18 19:57:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 357 states have (on average 1.0812324929971988) internal successors, (386), 357 states have internal predecessors, (386), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-18 19:57:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 409 transitions. [2022-11-18 19:57:01,083 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 409 transitions. Word has length 293 [2022-11-18 19:57:01,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:01,083 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 409 transitions. [2022-11-18 19:57:01,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:57:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 409 transitions. [2022-11-18 19:57:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-18 19:57:01,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:01,090 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:01,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:01,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:57:01,296 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:57:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash 286972742, now seen corresponding path program 7 times [2022-11-18 19:57:01,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:01,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349199061] [2022-11-18 19:57:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:01,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:01,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:57:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3710 proven. 138 refuted. 0 times theorem prover too weak. 2737 trivial. 0 not checked. [2022-11-18 19:57:03,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:03,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349199061] [2022-11-18 19:57:03,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349199061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:03,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302814747] [2022-11-18 19:57:03,804 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:57:03,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:03,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:03,806 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:03,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:57:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:04,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 19:57:04,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-11-18 19:57:04,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-11-18 19:57:11,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302814747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:11,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:11,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2022-11-18 19:57:11,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68965066] [2022-11-18 19:57:11,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:11,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:57:11,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:11,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:57:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:57:11,076 INFO L87 Difference]: Start difference. First operand 380 states and 409 transitions. Second operand has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 19:57:12,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:12,953 INFO L93 Difference]: Finished difference Result 787 states and 849 transitions. [2022-11-18 19:57:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 19:57:12,954 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 322 [2022-11-18 19:57:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:12,956 INFO L225 Difference]: With dead ends: 787 [2022-11-18 19:57:12,957 INFO L226 Difference]: Without dead ends: 521 [2022-11-18 19:57:12,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 623 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3493 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2022-11-18 19:57:12,961 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 77 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:12,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 397 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:57:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-18 19:57:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 469. [2022-11-18 19:57:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 442 states have (on average 1.0701357466063348) internal successors, (473), 442 states have internal predecessors, (473), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-18 19:57:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 500 transitions. [2022-11-18 19:57:13,021 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 500 transitions. Word has length 322 [2022-11-18 19:57:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:13,022 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 500 transitions. [2022-11-18 19:57:13,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 19:57:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 500 transitions. [2022-11-18 19:57:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-18 19:57:13,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:13,029 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:13,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:57:13,235 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:57:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash 113070627, now seen corresponding path program 8 times [2022-11-18 19:57:13,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:13,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760160298] [2022-11-18 19:57:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:13,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:57:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:14,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4312 proven. 195 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2022-11-18 19:57:15,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:15,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760160298] [2022-11-18 19:57:15,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760160298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:15,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423851672] [2022-11-18 19:57:15,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:57:15,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:15,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:15,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:15,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:57:16,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:57:16,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:16,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:57:16,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-11-18 19:57:16,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-11-18 19:57:24,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423851672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:24,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:24,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2022-11-18 19:57:24,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7816546] [2022-11-18 19:57:24,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 19:57:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 19:57:24,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 19:57:24,129 INFO L87 Difference]: Start difference. First operand 469 states and 500 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 19:57:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:26,816 INFO L93 Difference]: Finished difference Result 958 states and 1021 transitions. [2022-11-18 19:57:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-18 19:57:26,817 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 337 [2022-11-18 19:57:26,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:26,823 INFO L225 Difference]: With dead ends: 958 [2022-11-18 19:57:26,823 INFO L226 Difference]: Without dead ends: 668 [2022-11-18 19:57:26,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 645 SyntacticMatches, 36 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5400 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1769, Invalid=12037, Unknown=0, NotChecked=0, Total=13806 [2022-11-18 19:57:26,830 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 87 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:26,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 420 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:57:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-18 19:57:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 588. [2022-11-18 19:57:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 556 states have (on average 1.0611510791366907) internal successors, (590), 556 states have internal predecessors, (590), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 29 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-18 19:57:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 622 transitions. [2022-11-18 19:57:26,930 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 622 transitions. Word has length 337 [2022-11-18 19:57:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:26,931 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 622 transitions. [2022-11-18 19:57:26,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 19:57:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 622 transitions. [2022-11-18 19:57:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-18 19:57:26,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:26,941 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:26,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:27,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:57:27,150 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:57:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash -382247901, now seen corresponding path program 9 times [2022-11-18 19:57:27,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:27,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369467952] [2022-11-18 19:57:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:57:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:29,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 4853 proven. 261 refuted. 0 times theorem prover too weak. 3401 trivial. 0 not checked. [2022-11-18 19:57:30,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:30,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369467952] [2022-11-18 19:57:30,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369467952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:30,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299860554] [2022-11-18 19:57:30,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:57:30,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:30,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:30,269 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:30,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:57:30,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-18 19:57:30,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:30,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:57:30,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-11-18 19:57:31,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-11-18 19:57:32,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299860554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:32,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:32,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 73 [2022-11-18 19:57:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718827693] [2022-11-18 19:57:32,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:32,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-18 19:57:32,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:32,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-18 19:57:32,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=4528, Unknown=0, NotChecked=0, Total=5256 [2022-11-18 19:57:32,538 INFO L87 Difference]: Start difference. First operand 588 states and 622 transitions. Second operand has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:57:36,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:36,240 INFO L93 Difference]: Finished difference Result 1739 states and 1954 transitions. [2022-11-18 19:57:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-18 19:57:36,241 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 359 [2022-11-18 19:57:36,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:36,249 INFO L225 Difference]: With dead ends: 1739 [2022-11-18 19:57:36,249 INFO L226 Difference]: Without dead ends: 1423 [2022-11-18 19:57:36,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3164, Invalid=16296, Unknown=0, NotChecked=0, Total=19460 [2022-11-18 19:57:36,257 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 477 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:36,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 741 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:57:36,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-11-18 19:57:36,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 803. [2022-11-18 19:57:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 765 states have (on average 1.0627450980392157) internal successors, (813), 765 states have internal predecessors, (813), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 35 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-18 19:57:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 851 transitions. [2022-11-18 19:57:36,396 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 851 transitions. Word has length 359 [2022-11-18 19:57:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:36,397 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 851 transitions. [2022-11-18 19:57:36,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:57:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 851 transitions. [2022-11-18 19:57:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-18 19:57:36,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:36,403 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:36,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:36,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:57:36,611 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:57:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1921176138, now seen corresponding path program 10 times [2022-11-18 19:57:36,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:36,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303894768] [2022-11-18 19:57:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:36,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:57:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:38,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 6985 proven. 336 refuted. 0 times theorem prover too weak. 4071 trivial. 0 not checked. [2022-11-18 19:57:39,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:39,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303894768] [2022-11-18 19:57:39,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303894768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:39,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813132672] [2022-11-18 19:57:39,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:57:39,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:39,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:39,515 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:39,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:57:39,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:57:39,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:39,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 19:57:39,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-11-18 19:57:40,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-11-18 19:57:52,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813132672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:52,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:52,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 65 [2022-11-18 19:57:52,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386962292] [2022-11-18 19:57:52,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-18 19:57:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-18 19:57:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2022-11-18 19:57:52,046 INFO L87 Difference]: Start difference. First operand 803 states and 851 transitions. Second operand has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-18 19:57:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:57,036 INFO L93 Difference]: Finished difference Result 1552 states and 1640 transitions. [2022-11-18 19:57:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-18 19:57:57,037 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 388 [2022-11-18 19:57:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:57,043 INFO L225 Difference]: With dead ends: 1552 [2022-11-18 19:57:57,043 INFO L226 Difference]: Without dead ends: 1154 [2022-11-18 19:57:57,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 731 SyntacticMatches, 46 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3583, Invalid=25147, Unknown=0, NotChecked=0, Total=28730 [2022-11-18 19:57:57,051 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 109 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:57,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 534 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:57:57,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-18 19:57:57,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1000. [2022-11-18 19:57:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 955 states have (on average 1.0554973821989528) internal successors, (1008), 955 states have internal predecessors, (1008), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 42 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-18 19:57:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1053 transitions. [2022-11-18 19:57:57,199 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1053 transitions. Word has length 388 [2022-11-18 19:57:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:57,200 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1053 transitions. [2022-11-18 19:57:57,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-18 19:57:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1053 transitions. [2022-11-18 19:57:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-18 19:57:57,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:57,206 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:57,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-18 19:57:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:57:57,413 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:57:57,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash 373178470, now seen corresponding path program 11 times [2022-11-18 19:57:57,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:57,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370503265] [2022-11-18 19:57:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:57:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:58,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 6812 proven. 420 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2022-11-18 19:57:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:59,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370503265] [2022-11-18 19:57:59,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370503265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:59,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691380647] [2022-11-18 19:57:59,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:57:59,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:59,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:59,731 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:59,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:58:00,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2022-11-18 19:58:00,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:00,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 19:58:00,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8259 proven. 1615 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-11-18 19:58:01,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8445 proven. 1429 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-11-18 19:58:09,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691380647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:09,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:09,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 48] total 69 [2022-11-18 19:58:09,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715249249] [2022-11-18 19:58:09,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:09,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-18 19:58:09,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-18 19:58:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2022-11-18 19:58:09,019 INFO L87 Difference]: Start difference. First operand 1000 states and 1053 transitions. Second operand has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 19:58:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:14,400 INFO L93 Difference]: Finished difference Result 1870 states and 1963 transitions. [2022-11-18 19:58:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-18 19:58:14,401 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 404 [2022-11-18 19:58:14,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:14,407 INFO L225 Difference]: With dead ends: 1870 [2022-11-18 19:58:14,407 INFO L226 Difference]: Without dead ends: 1448 [2022-11-18 19:58:14,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 765 SyntacticMatches, 43 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12463 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4838, Invalid=30694, Unknown=0, NotChecked=0, Total=35532 [2022-11-18 19:58:14,416 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 130 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:14,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 543 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:58:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2022-11-18 19:58:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1248. [2022-11-18 19:58:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1195 states have (on average 1.0502092050209204) internal successors, (1255), 1195 states have internal predecessors, (1255), 3 states have call successors, (3), 2 states have call predecessors, (3), 49 states have return successors, (50), 50 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-18 19:58:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1308 transitions. [2022-11-18 19:58:14,633 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1308 transitions. Word has length 404 [2022-11-18 19:58:14,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:14,634 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 1308 transitions. [2022-11-18 19:58:14,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 19:58:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1308 transitions. [2022-11-18 19:58:14,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-18 19:58:14,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:14,641 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:14,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:14,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:14,849 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:58:14,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash 144455286, now seen corresponding path program 12 times [2022-11-18 19:58:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:14,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428612491] [2022-11-18 19:58:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:58:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:18,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:58:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 9009 proven. 1914 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2022-11-18 19:58:19,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:19,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428612491] [2022-11-18 19:58:19,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428612491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:19,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222688873] [2022-11-18 19:58:19,823 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:58:19,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:19,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:19,824 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:19,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:58:20,476 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-11-18 19:58:20,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:20,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 19:58:20,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-11-18 19:58:22,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-11-18 19:58:33,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222688873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:33,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:33,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 37, 37] total 130 [2022-11-18 19:58:33,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284822847] [2022-11-18 19:58:33,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:33,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-11-18 19:58:33,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-11-18 19:58:33,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=15425, Unknown=0, NotChecked=0, Total=16770 [2022-11-18 19:58:33,107 INFO L87 Difference]: Start difference. First operand 1248 states and 1308 transitions. Second operand has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-18 19:59:14,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:14,340 INFO L93 Difference]: Finished difference Result 4255 states and 4522 transitions. [2022-11-18 19:59:14,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2022-11-18 19:59:14,340 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) Word has length 410 [2022-11-18 19:59:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:14,358 INFO L225 Difference]: With dead ends: 4255 [2022-11-18 19:59:14,358 INFO L226 Difference]: Without dead ends: 3470 [2022-11-18 19:59:14,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1579 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259569 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=53363, Invalid=595467, Unknown=0, NotChecked=0, Total=648830 [2022-11-18 19:59:14,440 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1920 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:14,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1920 Valid, 1074 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:59:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2022-11-18 19:59:15,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2784. [2022-11-18 19:59:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2675 states have (on average 1.0429906542056075) internal successors, (2790), 2675 states have internal predecessors, (2790), 3 states have call successors, (3), 2 states have call predecessors, (3), 105 states have return successors, (106), 106 states have call predecessors, (106), 2 states have call successors, (106) [2022-11-18 19:59:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 2899 transitions. [2022-11-18 19:59:15,362 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 2899 transitions. Word has length 410 [2022-11-18 19:59:15,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:15,363 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 2899 transitions. [2022-11-18 19:59:15,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-18 19:59:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 2899 transitions. [2022-11-18 19:59:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2022-11-18 19:59:15,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:15,385 INFO L195 NwaCegarLoop]: trace histogram [201, 201, 201, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:15,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-18 19:59:15,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:15,594 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:59:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1472456966, now seen corresponding path program 13 times [2022-11-18 19:59:15,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:15,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083004947] [2022-11-18 19:59:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:16,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:59:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:18,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:19,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:21,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 67286 backedges. 1221 proven. 6 refuted. 0 times theorem prover too weak. 66059 trivial. 0 not checked. [2022-11-18 19:59:25,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:25,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083004947] [2022-11-18 19:59:25,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083004947] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:25,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51977511] [2022-11-18 19:59:25,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:59:25,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:25,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:25,433 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:25,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:59:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:26,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:59:26,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 67286 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66059 trivial. 0 not checked. [2022-11-18 19:59:26,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 67286 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66059 trivial. 0 not checked. [2022-11-18 19:59:28,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51977511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:28,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:28,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-11-18 19:59:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135748384] [2022-11-18 19:59:28,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:59:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:59:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:59:28,096 INFO L87 Difference]: Start difference. First operand 2784 states and 2899 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 19:59:28,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:28,446 INFO L93 Difference]: Finished difference Result 4067 states and 4234 transitions. [2022-11-18 19:59:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:59:28,446 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 850 [2022-11-18 19:59:28,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:28,454 INFO L225 Difference]: With dead ends: 4067 [2022-11-18 19:59:28,454 INFO L226 Difference]: Without dead ends: 2035 [2022-11-18 19:59:28,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1775 GetRequests, 1751 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:59:28,462 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:28,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 150 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:59:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-18 19:59:28,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2035. [2022-11-18 19:59:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1957 states have (on average 1.0424118548799182) internal successors, (2040), 1957 states have internal predecessors, (2040), 3 states have call successors, (3), 2 states have call predecessors, (3), 74 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) [2022-11-18 19:59:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2118 transitions. [2022-11-18 19:59:28,805 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2118 transitions. Word has length 850 [2022-11-18 19:59:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:28,807 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 2118 transitions. [2022-11-18 19:59:28,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 19:59:28,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2118 transitions. [2022-11-18 19:59:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2022-11-18 19:59:28,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:28,821 INFO L195 NwaCegarLoop]: trace histogram [203, 203, 203, 26, 25, 25, 25, 25, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:28,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-18 19:59:29,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 19:59:29,030 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:59:29,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1478425027, now seen corresponding path program 14 times [2022-11-18 19:59:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:29,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083994893] [2022-11-18 19:59:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:59:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:35,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:37,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:39,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:39,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:40,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:40,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:40,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 69224 backedges. 2783 proven. 30 refuted. 0 times theorem prover too weak. 66411 trivial. 0 not checked. [2022-11-18 19:59:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:40,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083994893] [2022-11-18 19:59:40,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083994893] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:40,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971010070] [2022-11-18 19:59:40,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:59:40,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:40,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:40,345 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:40,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:59:41,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:59:41,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:41,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:59:41,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 69224 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66411 trivial. 0 not checked. [2022-11-18 19:59:41,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 69224 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66411 trivial. 0 not checked. [2022-11-18 19:59:44,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971010070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:44,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:44,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2022-11-18 19:59:44,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593840498] [2022-11-18 19:59:44,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:44,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:59:44,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:44,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:59:44,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:59:44,339 INFO L87 Difference]: Start difference. First operand 2035 states and 2118 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:59:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:44,637 INFO L93 Difference]: Finished difference Result 2620 states and 2726 transitions. [2022-11-18 19:59:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:59:44,640 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 877 [2022-11-18 19:59:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:44,646 INFO L225 Difference]: With dead ends: 2620 [2022-11-18 19:59:44,646 INFO L226 Difference]: Without dead ends: 1337 [2022-11-18 19:59:44,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1841 GetRequests, 1802 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:59:44,652 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:44,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 123 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:59:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-11-18 19:59:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2022-11-18 19:59:44,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1288 states have (on average 1.0411490683229814) internal successors, (1341), 1288 states have internal predecessors, (1341), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 46 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-18 19:59:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1390 transitions. [2022-11-18 19:59:44,857 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1390 transitions. Word has length 877 [2022-11-18 19:59:44,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:44,858 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1390 transitions. [2022-11-18 19:59:44,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 19:59:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1390 transitions. [2022-11-18 19:59:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2022-11-18 19:59:44,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:44,870 INFO L195 NwaCegarLoop]: trace histogram [206, 206, 206, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:44,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:45,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:59:45,080 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:59:45,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash 740343631, now seen corresponding path program 15 times [2022-11-18 19:59:45,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:45,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954634940] [2022-11-18 19:59:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:59:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:50,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:50,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:59:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 71350 backedges. 23396 proven. 615 refuted. 0 times theorem prover too weak. 47339 trivial. 0 not checked. [2022-11-18 19:59:51,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954634940] [2022-11-18 19:59:51,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954634940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:51,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331504414] [2022-11-18 19:59:51,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:59:51,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:51,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:51,575 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:51,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:59:52,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-11-18 19:59:52,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:52,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 19:59:52,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 71350 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53484 trivial. 0 not checked. [2022-11-18 19:59:53,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 71350 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53484 trivial. 0 not checked. [2022-11-18 19:59:55,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331504414] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:55,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:55,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 28, 28] total 103 [2022-11-18 19:59:55,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963903702] [2022-11-18 19:59:55,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:55,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-11-18 19:59:55,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:55,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-11-18 19:59:56,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=9300, Unknown=0, NotChecked=0, Total=10506 [2022-11-18 19:59:56,002 INFO L87 Difference]: Start difference. First operand 1337 states and 1390 transitions. Second operand has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 20:00:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:05,944 INFO L93 Difference]: Finished difference Result 5324 states and 5959 transitions. [2022-11-18 20:00:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-11-18 20:00:05,946 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 887 [2022-11-18 20:00:05,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:05,961 INFO L225 Difference]: With dead ends: 5324 [2022-11-18 20:00:05,961 INFO L226 Difference]: Without dead ends: 4442 [2022-11-18 20:00:05,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2042 GetRequests, 1770 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21070 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=9711, Invalid=65091, Unknown=0, NotChecked=0, Total=74802 [2022-11-18 20:00:05,975 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1268 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:05,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 895 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:00:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-11-18 20:00:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 1903. [2022-11-18 20:00:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1846 states have (on average 1.0444203683640303) internal successors, (1928), 1846 states have internal predecessors, (1928), 3 states have call successors, (3), 2 states have call predecessors, (3), 53 states have return successors, (54), 54 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-18 20:00:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 1985 transitions. [2022-11-18 20:00:06,314 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 1985 transitions. Word has length 887 [2022-11-18 20:00:06,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:06,315 INFO L495 AbstractCegarLoop]: Abstraction has 1903 states and 1985 transitions. [2022-11-18 20:00:06,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 20:00:06,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 1985 transitions. [2022-11-18 20:00:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2022-11-18 20:00:06,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:06,329 INFO L195 NwaCegarLoop]: trace histogram [232, 232, 232, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:06,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:06,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:00:06,531 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:00:06,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1352258977, now seen corresponding path program 16 times [2022-11-18 20:00:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:06,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699669155] [2022-11-18 20:00:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:00:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:12,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:15,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:00:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 89266 backedges. 40095 proven. 726 refuted. 0 times theorem prover too weak. 48445 trivial. 0 not checked. [2022-11-18 20:00:16,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:16,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699669155] [2022-11-18 20:00:16,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699669155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:16,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524006113] [2022-11-18 20:00:16,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:00:16,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:00:16,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:00:16,978 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:00:17,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:00:18,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:00:18,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:00:18,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2207 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-18 20:00:18,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 89266 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34346 trivial. 0 not checked. [2022-11-18 20:00:19,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 89266 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34346 trivial. 0 not checked. [2022-11-18 20:01:06,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524006113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:06,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:01:06,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2022-11-18 20:01:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53939009] [2022-11-18 20:01:06,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-11-18 20:01:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-11-18 20:01:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2022-11-18 20:01:06,642 INFO L87 Difference]: Start difference. First operand 1903 states and 1985 transitions. Second operand has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:01:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:17,540 INFO L93 Difference]: Finished difference Result 3777 states and 3942 transitions. [2022-11-18 20:01:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-11-18 20:01:17,540 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 975 [2022-11-18 20:01:17,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:17,550 INFO L225 Difference]: With dead ends: 3777 [2022-11-18 20:01:17,551 INFO L226 Difference]: Without dead ends: 2618 [2022-11-18 20:01:17,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2257 GetRequests, 1895 SyntacticMatches, 66 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33434 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2022-11-18 20:01:17,572 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 169 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 6406 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 6430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:17,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 681 Invalid, 6430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 6406 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:01:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-11-18 20:01:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2312. [2022-11-18 20:01:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2239 states have (on average 1.0397498883430103) internal successors, (2328), 2239 states have internal predecessors, (2328), 3 states have call successors, (3), 2 states have call predecessors, (3), 69 states have return successors, (70), 70 states have call predecessors, (70), 2 states have call successors, (70) [2022-11-18 20:01:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2401 transitions. [2022-11-18 20:01:18,000 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2401 transitions. Word has length 975 [2022-11-18 20:01:18,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:18,002 INFO L495 AbstractCegarLoop]: Abstraction has 2312 states and 2401 transitions. [2022-11-18 20:01:18,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:01:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2401 transitions. [2022-11-18 20:01:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2022-11-18 20:01:18,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:18,019 INFO L195 NwaCegarLoop]: trace histogram [241, 241, 241, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:18,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:18,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:01:18,235 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:01:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:18,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1275650230, now seen corresponding path program 17 times [2022-11-18 20:01:18,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:18,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65620845] [2022-11-18 20:01:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:18,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:23,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:01:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 95854 backedges. 42958 proven. 846 refuted. 0 times theorem prover too weak. 52050 trivial. 0 not checked. [2022-11-18 20:01:28,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65620845] [2022-11-18 20:01:28,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65620845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266840214] [2022-11-18 20:01:28,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:01:28,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:28,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:28,799 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:28,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:01:30,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2022-11-18 20:01:30,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:30,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-18 20:01:30,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 95854 backedges. 58868 proven. 4643 refuted. 0 times theorem prover too weak. 32343 trivial. 0 not checked. [2022-11-18 20:01:31,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 95854 backedges. 59724 proven. 3787 refuted. 0 times theorem prover too weak. 32343 trivial. 0 not checked. [2022-11-18 20:02:06,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266840214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:06,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:02:06,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 66, 66] total 95 [2022-11-18 20:02:06,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441776455] [2022-11-18 20:02:06,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:06,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-11-18 20:02:06,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:06,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-11-18 20:02:06,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=862, Invalid=8068, Unknown=0, NotChecked=0, Total=8930 [2022-11-18 20:02:06,223 INFO L87 Difference]: Start difference. First operand 2312 states and 2401 transitions. Second operand has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-18 20:02:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:17,679 INFO L93 Difference]: Finished difference Result 4111 states and 4269 transitions. [2022-11-18 20:02:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2022-11-18 20:02:17,680 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 1002 [2022-11-18 20:02:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:17,686 INFO L225 Difference]: With dead ends: 4111 [2022-11-18 20:02:17,686 INFO L226 Difference]: Without dead ends: 3122 [2022-11-18 20:02:17,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2324 GetRequests, 1960 SyntacticMatches, 57 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32811 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=12888, Invalid=82284, Unknown=0, NotChecked=0, Total=95172 [2022-11-18 20:02:17,695 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 206 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 6995 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 7028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 6995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:17,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 903 Invalid, 7028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 6995 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 20:02:17,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-11-18 20:02:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2752. [2022-11-18 20:02:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2669 states have (on average 1.0363431997002623) internal successors, (2766), 2669 states have internal predecessors, (2766), 3 states have call successors, (3), 2 states have call predecessors, (3), 79 states have return successors, (80), 80 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-18 20:02:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 2849 transitions. [2022-11-18 20:02:18,216 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 2849 transitions. Word has length 1002 [2022-11-18 20:02:18,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:18,217 INFO L495 AbstractCegarLoop]: Abstraction has 2752 states and 2849 transitions. [2022-11-18 20:02:18,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-18 20:02:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 2849 transitions. [2022-11-18 20:02:18,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2022-11-18 20:02:18,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:18,229 INFO L195 NwaCegarLoop]: trace histogram [249, 249, 249, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:18,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:18,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:02:18,436 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:02:18,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:18,437 INFO L85 PathProgramCache]: Analyzing trace with hash 8901130, now seen corresponding path program 18 times [2022-11-18 20:02:18,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:18,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053847394] [2022-11-18 20:02:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:02:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:23,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:26,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:02:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 101914 backedges. 45682 proven. 975 refuted. 0 times theorem prover too weak. 55257 trivial. 0 not checked. [2022-11-18 20:02:28,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:28,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053847394] [2022-11-18 20:02:28,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053847394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:28,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014222789] [2022-11-18 20:02:28,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:02:28,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:28,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:28,987 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:29,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:02:31,064 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-11-18 20:02:31,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:31,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 20:02:31,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 101914 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2022-11-18 20:02:32,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 101914 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2022-11-18 20:02:37,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014222789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:37,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:02:37,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 37, 37] total 133 [2022-11-18 20:02:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902962636] [2022-11-18 20:02:37,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-11-18 20:02:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-11-18 20:02:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1875, Invalid=15681, Unknown=0, NotChecked=0, Total=17556 [2022-11-18 20:02:37,217 INFO L87 Difference]: Start difference. First operand 2752 states and 2849 transitions. Second operand has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:02:58,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:58,688 INFO L93 Difference]: Finished difference Result 10301 states and 11361 transitions. [2022-11-18 20:02:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2022-11-18 20:02:58,688 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 1026 [2022-11-18 20:02:58,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:58,710 INFO L225 Difference]: With dead ends: 10301 [2022-11-18 20:02:58,711 INFO L226 Difference]: Without dead ends: 9080 [2022-11-18 20:02:58,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2470 GetRequests, 2031 SyntacticMatches, 0 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61790 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=22403, Invalid=171637, Unknown=0, NotChecked=0, Total=194040 [2022-11-18 20:02:58,732 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 2661 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 4337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:58,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 1124 Invalid, 4337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:02:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2022-11-18 20:02:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 3360. [2022-11-18 20:02:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3266 states have (on average 1.0404164115125536) internal successors, (3398), 3266 states have internal predecessors, (3398), 3 states have call successors, (3), 2 states have call predecessors, (3), 90 states have return successors, (91), 91 states have call predecessors, (91), 2 states have call successors, (91) [2022-11-18 20:02:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 3492 transitions. [2022-11-18 20:02:59,778 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 3492 transitions. Word has length 1026 [2022-11-18 20:02:59,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:59,779 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 3492 transitions. [2022-11-18 20:02:59,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:02:59,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 3492 transitions. [2022-11-18 20:02:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2022-11-18 20:02:59,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:59,791 INFO L195 NwaCegarLoop]: trace histogram [282, 282, 282, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:59,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:59,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:02:59,998 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:02:59,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:59,999 INFO L85 PathProgramCache]: Analyzing trace with hash 323775503, now seen corresponding path program 19 times [2022-11-18 20:02:59,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:59,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707839238] [2022-11-18 20:02:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:59,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:03:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:11,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:13,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:13,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:03:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 128692 backedges. 69838 proven. 1113 refuted. 0 times theorem prover too weak. 57741 trivial. 0 not checked. [2022-11-18 20:03:14,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:14,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707839238] [2022-11-18 20:03:14,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707839238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:14,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398764048] [2022-11-18 20:03:14,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:03:14,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:14,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:14,282 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:14,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:03:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:16,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-18 20:03:16,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 128692 backedges. 86003 proven. 6106 refuted. 0 times theorem prover too weak. 36583 trivial. 0 not checked. [2022-11-18 20:03:18,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 128692 backedges. 86003 proven. 6106 refuted. 0 times theorem prover too weak. 36583 trivial. 0 not checked. [2022-11-18 20:04:23,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398764048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:04:23,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:04:23,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 83, 83] total 114 [2022-11-18 20:04:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201436660] [2022-11-18 20:04:23,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:23,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-11-18 20:04:23,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-11-18 20:04:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=11806, Unknown=0, NotChecked=0, Total=12882 [2022-11-18 20:04:23,609 INFO L87 Difference]: Start difference. First operand 3360 states and 3492 transitions. Second operand has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-18 20:04:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:45,018 INFO L93 Difference]: Finished difference Result 5650 states and 5874 transitions. [2022-11-18 20:04:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-11-18 20:04:45,018 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) Word has length 1115 [2022-11-18 20:04:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:45,031 INFO L225 Difference]: With dead ends: 5650 [2022-11-18 20:04:45,031 INFO L226 Difference]: Without dead ends: 4463 [2022-11-18 20:04:45,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2646 GetRequests, 2152 SyntacticMatches, 81 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64190 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=20831, Invalid=150979, Unknown=0, NotChecked=0, Total=171810 [2022-11-18 20:04:45,047 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 199 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 13996 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 14026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:04:45,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1213 Invalid, 14026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13996 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-18 20:04:45,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2022-11-18 20:04:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3947. [2022-11-18 20:04:46,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3841 states have (on average 1.036709190315022) internal successors, (3982), 3841 states have internal predecessors, (3982), 3 states have call successors, (3), 2 states have call predecessors, (3), 102 states have return successors, (103), 103 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-18 20:04:46,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 4088 transitions. [2022-11-18 20:04:46,340 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 4088 transitions. Word has length 1115 [2022-11-18 20:04:46,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:46,340 INFO L495 AbstractCegarLoop]: Abstraction has 3947 states and 4088 transitions. [2022-11-18 20:04:46,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-18 20:04:46,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 4088 transitions. [2022-11-18 20:04:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2022-11-18 20:04:46,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:46,461 INFO L195 NwaCegarLoop]: trace histogram [287, 287, 287, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:46,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:46,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:04:46,662 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:04:46,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1864592074, now seen corresponding path program 20 times [2022-11-18 20:04:46,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:46,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886288914] [2022-11-18 20:04:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:46,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:04:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:04:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:56,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:04:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:58,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:04:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:00,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:05:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 72514 proven. 1266 refuted. 0 times theorem prover too weak. 59541 trivial. 0 not checked. [2022-11-18 20:05:01,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:01,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886288914] [2022-11-18 20:05:01,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886288914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:01,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514018797] [2022-11-18 20:05:01,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:05:01,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:01,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:01,669 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:01,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:05:04,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:05:04,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:05:04,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-18 20:05:04,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 94098 proven. 7329 refuted. 0 times theorem prover too weak. 31894 trivial. 0 not checked. [2022-11-18 20:05:07,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 94098 proven. 7329 refuted. 0 times theorem prover too weak. 31894 trivial. 0 not checked. [2022-11-18 20:06:18,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514018797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:18,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:18,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 88, 88] total 119 [2022-11-18 20:06:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172847227] [2022-11-18 20:06:18,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:18,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-11-18 20:06:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-11-18 20:06:18,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1129, Invalid=12913, Unknown=0, NotChecked=0, Total=14042 [2022-11-18 20:06:18,994 INFO L87 Difference]: Start difference. First operand 3947 states and 4088 transitions. Second operand has 119 states, 119 states have (on average 2.1596638655462184) internal successors, (257), 101 states have internal predecessors, (257), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-18 20:06:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:42,729 INFO L93 Difference]: Finished difference Result 6451 states and 6682 transitions. [2022-11-18 20:06:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 359 states. [2022-11-18 20:06:42,730 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.1596638655462184) internal successors, (257), 101 states have internal predecessors, (257), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) Word has length 1140 [2022-11-18 20:06:42,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:42,741 INFO L225 Difference]: With dead ends: 6451 [2022-11-18 20:06:42,741 INFO L226 Difference]: Without dead ends: 5216 [2022-11-18 20:06:42,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2737 GetRequests, 2196 SyntacticMatches, 86 SemanticMatches, 455 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76024 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=25312, Invalid=183080, Unknown=0, NotChecked=0, Total=208392 [2022-11-18 20:06:42,759 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 212 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 13125 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 13157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 13125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:42,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 804 Invalid, 13157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 13125 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-18 20:06:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2022-11-18 20:06:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 4618. [2022-11-18 20:06:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 4499 states have (on average 1.0335630140031118) internal successors, (4650), 4499 states have internal predecessors, (4650), 3 states have call successors, (3), 2 states have call predecessors, (3), 115 states have return successors, (116), 116 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-18 20:06:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 4769 transitions. [2022-11-18 20:06:44,634 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 4769 transitions. Word has length 1140 [2022-11-18 20:06:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:44,634 INFO L495 AbstractCegarLoop]: Abstraction has 4618 states and 4769 transitions. [2022-11-18 20:06:44,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.1596638655462184) internal successors, (257), 101 states have internal predecessors, (257), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-18 20:06:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 4769 transitions. [2022-11-18 20:06:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2022-11-18 20:06:44,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:44,648 INFO L195 NwaCegarLoop]: trace histogram [291, 291, 291, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:44,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:44,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:44,849 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:06:44,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:44,849 INFO L85 PathProgramCache]: Analyzing trace with hash -852577910, now seen corresponding path program 21 times [2022-11-18 20:06:44,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:44,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487302861] [2022-11-18 20:06:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:44,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:49,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:06:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:06:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:06:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:06:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:01,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:02,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:07:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 136630 backedges. 74873 proven. 1416 refuted. 0 times theorem prover too weak. 60341 trivial. 0 not checked. [2022-11-18 20:07:02,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:02,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487302861] [2022-11-18 20:07:02,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487302861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:02,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053263889] [2022-11-18 20:07:02,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:07:02,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:02,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:02,021 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:02,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:07:05,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-11-18 20:07:05,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:05,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 20:07:05,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 136630 backedges. 61581 proven. 12767 refuted. 0 times theorem prover too weak. 62282 trivial. 0 not checked. [2022-11-18 20:07:08,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 136630 backedges. 61581 proven. 12767 refuted. 0 times theorem prover too weak. 62282 trivial. 0 not checked. [2022-11-18 20:07:16,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053263889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:16,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:16,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 46, 46] total 163 [2022-11-18 20:07:16,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708614211] [2022-11-18 20:07:16,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:16,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-11-18 20:07:16,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-11-18 20:07:16,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2694, Invalid=23712, Unknown=0, NotChecked=0, Total=26406 [2022-11-18 20:07:16,404 INFO L87 Difference]: Start difference. First operand 4618 states and 4769 transitions. Second operand has 163 states, 163 states have (on average 1.7791411042944785) internal successors, (290), 156 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 20:07:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:58,895 INFO L93 Difference]: Finished difference Result 16725 states and 18288 transitions. [2022-11-18 20:07:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 487 states. [2022-11-18 20:07:58,895 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 1.7791411042944785) internal successors, (290), 156 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 1142 [2022-11-18 20:07:58,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:58,931 INFO L225 Difference]: With dead ends: 16725 [2022-11-18 20:07:58,931 INFO L226 Difference]: Without dead ends: 15117 [2022-11-18 20:07:58,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2888 GetRequests, 2246 SyntacticMatches, 0 SemanticMatches, 642 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142635 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=43273, Invalid=370819, Unknown=0, NotChecked=0, Total=414092 [2022-11-18 20:07:58,980 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 4623 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 968 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4623 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 5467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 968 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:58,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4623 Valid, 1158 Invalid, 5467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [968 Valid, 4499 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 20:07:58,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15117 states. [2022-11-18 20:08:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15117 to 5554. [2022-11-18 20:08:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5421 states have (on average 1.036524626452684) internal successors, (5619), 5421 states have internal predecessors, (5619), 3 states have call successors, (3), 2 states have call predecessors, (3), 129 states have return successors, (130), 130 states have call predecessors, (130), 2 states have call successors, (130) [2022-11-18 20:08:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 5752 transitions. [2022-11-18 20:08:01,139 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 5752 transitions. Word has length 1142 [2022-11-18 20:08:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:01,140 INFO L495 AbstractCegarLoop]: Abstraction has 5554 states and 5752 transitions. [2022-11-18 20:08:01,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 1.7791411042944785) internal successors, (290), 156 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 20:08:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 5752 transitions. [2022-11-18 20:08:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1270 [2022-11-18 20:08:01,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:01,165 INFO L195 NwaCegarLoop]: trace histogram [330, 330, 330, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:01,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:01,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:08:01,378 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:08:01,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:01,379 INFO L85 PathProgramCache]: Analyzing trace with hash -301827569, now seen corresponding path program 22 times [2022-11-18 20:08:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:01,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944870376] [2022-11-18 20:08:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:01,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:08:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:15,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:39,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:44,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:45,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:45,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:45,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:46,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:46,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:08:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 174085 backedges. 86376 proven. 35970 refuted. 0 times theorem prover too weak. 51739 trivial. 0 not checked. [2022-11-18 20:08:46,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:46,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944870376] [2022-11-18 20:08:46,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944870376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:46,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061487265] [2022-11-18 20:08:46,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:08:46,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:46,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:46,590 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:46,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d779ba7-796d-4f51-9d70-2c49246c2e43/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:08:50,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:08:50,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:50,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-18 20:08:50,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 174085 backedges. 86425 proven. 35921 refuted. 0 times theorem prover too weak. 51739 trivial. 0 not checked. [2022-11-18 20:08:51,391 INFO L328 TraceCheckSpWp]: Computing backward predicates...