./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi02-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d379c583eb269678169316efe01a55df7fa26acebe2991472725b0afcb2879ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:26:06,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:26:06,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:26:06,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:26:06,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:26:06,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:26:06,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:26:06,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:26:06,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:26:06,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:26:06,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:26:06,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:26:06,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:26:06,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:26:07,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:26:07,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:26:07,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:26:07,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:26:07,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:26:07,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:26:07,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:26:07,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:26:07,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:26:07,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:26:07,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:26:07,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:26:07,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:26:07,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:26:07,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:26:07,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:26:07,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:26:07,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:26:07,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:26:07,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:26:07,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:26:07,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:26:07,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:26:07,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:26:07,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:26:07,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:26:07,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:26:07,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-02 22:26:07,107 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:26:07,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:26:07,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:26:07,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:26:07,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:26:07,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:26:07,114 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:26:07,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:26:07,114 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:26:07,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:26:07,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:26:07,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:26:07,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:26:07,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:26:07,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:26:07,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:26:07,117 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 22:26:07,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:26:07,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:26:07,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:26:07,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:26:07,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:26:07,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:26:07,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:26:07,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:26:07,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:26:07,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:26:07,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:26:07,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:26:07,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:26:07,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:26:07,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:26:07,121 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_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d379c583eb269678169316efe01a55df7fa26acebe2991472725b0afcb2879ab [2021-11-02 22:26:07,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:26:07,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:26:07,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:26:07,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:26:07,451 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:26:07,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/recursive/recHanoi02-2.c [2021-11-02 22:26:07,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/data/4d835f604/b961538fce264bbbae4c3b25dbc740e0/FLAG414ea300a [2021-11-02 22:26:08,027 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:26:08,028 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/sv-benchmarks/c/recursive/recHanoi02-2.c [2021-11-02 22:26:08,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/data/4d835f604/b961538fce264bbbae4c3b25dbc740e0/FLAG414ea300a [2021-11-02 22:26:08,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/data/4d835f604/b961538fce264bbbae4c3b25dbc740e0 [2021-11-02 22:26:08,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:26:08,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:26:08,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:26:08,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:26:08,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:26:08,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66da58c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08, skipping insertion in model container [2021-11-02 22:26:08,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:26:08,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:26:08,625 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/sv-benchmarks/c/recursive/recHanoi02-2.c[839,852] [2021-11-02 22:26:08,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:26:08,637 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:26:08,657 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/sv-benchmarks/c/recursive/recHanoi02-2.c[839,852] [2021-11-02 22:26:08,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:26:08,675 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:26:08,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08 WrapperNode [2021-11-02 22:26:08,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:26:08,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:26:08,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:26:08,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:26:08,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:26:08,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:26:08,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:26:08,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:26:08,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:26:08,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:26:08,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:26:08,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:26:08,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (1/1) ... [2021-11-02 22:26:08,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:26:08,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:08,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:26:08,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:26:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2021-11-02 22:26:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2021-11-02 22:26:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:26:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:26:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:26:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:26:09,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:26:09,107 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-02 22:26:09,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:26:09 BoogieIcfgContainer [2021-11-02 22:26:09,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:26:09,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:26:09,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:26:09,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:26:09,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:26:08" (1/3) ... [2021-11-02 22:26:09,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a9a168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:26:09, skipping insertion in model container [2021-11-02 22:26:09,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:26:08" (2/3) ... [2021-11-02 22:26:09,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a9a168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:26:09, skipping insertion in model container [2021-11-02 22:26:09,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:26:09" (3/3) ... [2021-11-02 22:26:09,119 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2021-11-02 22:26:09,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:26:09,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 22:26:09,180 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:26:09,205 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:26:09,206 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 22:26:09,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5) internal successors, (27), 24 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) [2021-11-02 22:26:09,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:26:09,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:09,244 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:09,245 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:09,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1325924785, now seen corresponding path program 1 times [2021-11-02 22:26:09,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:09,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276617793] [2021-11-02 22:26:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:09,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:09,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:09,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276617793] [2021-11-02 22:26:09,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276617793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:09,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:09,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:26:09,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123567602] [2021-11-02 22:26:09,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:09,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:09,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:09,613 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5) internal successors, (27), 24 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, 3 states have (on average 2.0) 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) [2021-11-02 22:26:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:09,698 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-11-02 22:26:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:26:09,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) 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 [2021-11-02 22:26:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:09,710 INFO L225 Difference]: With dead ends: 34 [2021-11-02 22:26:09,710 INFO L226 Difference]: Without dead ends: 21 [2021-11-02 22:26:09,714 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:26:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-02 22:26:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-02 22:26:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 18 states have internal predecessors, (19), 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) [2021-11-02 22:26:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-02 22:26:09,757 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 7 [2021-11-02 22:26:09,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:09,758 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-02 22:26:09,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) 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) [2021-11-02 22:26:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-02 22:26:09,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:26:09,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:09,760 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:09,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:26:09,761 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:09,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1846004663, now seen corresponding path program 1 times [2021-11-02 22:26:09,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:09,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094253271] [2021-11-02 22:26:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:09,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:09,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:09,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094253271] [2021-11-02 22:26:09,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094253271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:09,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:09,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:26:09,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123449915] [2021-11-02 22:26:09,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:26:09,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:09,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:26:09,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:26:09,896 INFO L87 Difference]: Start difference. First operand 21 states and 22 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) [2021-11-02 22:26:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:09,965 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-11-02 22:26:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:26:09,966 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 [2021-11-02 22:26:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:09,971 INFO L225 Difference]: With dead ends: 40 [2021-11-02 22:26:09,971 INFO L226 Difference]: Without dead ends: 37 [2021-11-02 22:26:09,972 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:26:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-02 22:26:09,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2021-11-02 22:26:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-11-02 22:26:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-11-02 22:26:09,995 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 8 [2021-11-02 22:26:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:09,995 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-11-02 22:26:09,996 INFO L471 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) [2021-11-02 22:26:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-11-02 22:26:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-02 22:26:10,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:10,000 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:10,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:26:10,001 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:10,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:10,003 INFO L85 PathProgramCache]: Analyzing trace with hash -498171083, now seen corresponding path program 1 times [2021-11-02 22:26:10,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:10,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869574950] [2021-11-02 22:26:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:10,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:10,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:10,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869574950] [2021-11-02 22:26:10,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869574950] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:10,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978236930] [2021-11-02 22:26:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:10,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:10,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:10,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:26:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:10,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:26:10,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:10,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978236930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:10,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:10,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-11-02 22:26:10,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282488799] [2021-11-02 22:26:10,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:26:10,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:26:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:26:10,381 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:10,509 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-11-02 22:26:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:26:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-02 22:26:10,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:10,513 INFO L225 Difference]: With dead ends: 56 [2021-11-02 22:26:10,513 INFO L226 Difference]: Without dead ends: 55 [2021-11-02 22:26:10,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:26:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-02 22:26:10,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2021-11-02 22:26:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.4375) internal successors, (46), 36 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:26:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-11-02 22:26:10,544 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 13 [2021-11-02 22:26:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:10,544 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-11-02 22:26:10,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-11-02 22:26:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:26:10,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:10,547 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:10,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:10,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:10,761 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2001544150, now seen corresponding path program 1 times [2021-11-02 22:26:10,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:10,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101587382] [2021-11-02 22:26:10,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:10,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:10,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:26:10,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:10,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101587382] [2021-11-02 22:26:10,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101587382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:10,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:10,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:10,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426175723] [2021-11-02 22:26:10,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:26:10,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:26:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:26:10,841 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-02 22:26:10,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:10,875 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2021-11-02 22:26:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:26:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 15 [2021-11-02 22:26:10,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:10,879 INFO L225 Difference]: With dead ends: 66 [2021-11-02 22:26:10,879 INFO L226 Difference]: Without dead ends: 55 [2021-11-02 22:26:10,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:26:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-02 22:26:10,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-02 22:26:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.302325581395349) internal successors, (56), 46 states have internal predecessors, (56), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-02 22:26:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2021-11-02 22:26:10,890 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 15 [2021-11-02 22:26:10,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:10,891 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2021-11-02 22:26:10,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-02 22:26:10,891 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2021-11-02 22:26:10,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:26:10,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:10,892 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:26:10,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:26:10,895 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:10,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:10,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1201982071, now seen corresponding path program 2 times [2021-11-02 22:26:10,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:10,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334013988] [2021-11-02 22:26:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:10,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:11,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:11,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334013988] [2021-11-02 22:26:11,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334013988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:11,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681602673] [2021-11-02 22:26:11,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:26:11,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:11,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:11,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:11,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:26:11,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:26:11,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:11,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:26:11,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:11,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681602673] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:11,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:11,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-11-02 22:26:11,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097206621] [2021-11-02 22:26:11,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:26:11,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:11,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:26:11,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:26:11,217 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:11,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:11,356 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2021-11-02 22:26:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:26:11,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-02 22:26:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:11,362 INFO L225 Difference]: With dead ends: 87 [2021-11-02 22:26:11,362 INFO L226 Difference]: Without dead ends: 86 [2021-11-02 22:26:11,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:26:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-02 22:26:11,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2021-11-02 22:26:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.305084745762712) internal successors, (77), 62 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-02 22:26:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2021-11-02 22:26:11,383 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 18 [2021-11-02 22:26:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:11,384 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2021-11-02 22:26:11,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2021-11-02 22:26:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 22:26:11,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:11,385 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2021-11-02 22:26:11,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:11,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:11,590 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1623374965, now seen corresponding path program 3 times [2021-11-02 22:26:11,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:11,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825835967] [2021-11-02 22:26:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:11,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:11,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:11,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825835967] [2021-11-02 22:26:11,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825835967] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:11,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320688461] [2021-11-02 22:26:11,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:26:11,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:11,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:11,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:11,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:26:11,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 22:26:11,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:11,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:26:11,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:11,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320688461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:11,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:11,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-11-02 22:26:11,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959675300] [2021-11-02 22:26:11,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:26:11,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:26:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:26:11,972 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-11-02 22:26:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:12,132 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2021-11-02 22:26:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:26:12,132 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 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 23 [2021-11-02 22:26:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:12,134 INFO L225 Difference]: With dead ends: 110 [2021-11-02 22:26:12,135 INFO L226 Difference]: Without dead ends: 109 [2021-11-02 22:26:12,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:26:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-02 22:26:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2021-11-02 22:26:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 78 states have internal predecessors, (98), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-02 22:26:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2021-11-02 22:26:12,148 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 23 [2021-11-02 22:26:12,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:12,149 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2021-11-02 22:26:12,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-11-02 22:26:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2021-11-02 22:26:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 22:26:12,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:12,151 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2021-11-02 22:26:12,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:12,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-02 22:26:12,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:12,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:12,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1663195447, now seen corresponding path program 4 times [2021-11-02 22:26:12,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:12,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116585411] [2021-11-02 22:26:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:12,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:12,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:12,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116585411] [2021-11-02 22:26:12,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116585411] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:12,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355618929] [2021-11-02 22:26:12,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:26:12,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:12,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:12,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:12,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:26:12,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:26:12,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:12,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:26:12,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:12,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355618929] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:12,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:12,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-11-02 22:26:12,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942233957] [2021-11-02 22:26:12,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:26:12,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:26:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:26:12,740 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:12,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:12,930 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2021-11-02 22:26:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 22:26:12,930 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-02 22:26:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:12,932 INFO L225 Difference]: With dead ends: 133 [2021-11-02 22:26:12,932 INFO L226 Difference]: Without dead ends: 132 [2021-11-02 22:26:12,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-11-02 22:26:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-02 22:26:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2021-11-02 22:26:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 91 states have (on average 1.3076923076923077) internal successors, (119), 94 states have internal predecessors, (119), 7 states have call successors, (7), 6 states have call predecessors, (7), 9 states have return successors, (11), 11 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-02 22:26:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 137 transitions. [2021-11-02 22:26:12,946 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 137 transitions. Word has length 28 [2021-11-02 22:26:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:12,946 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 137 transitions. [2021-11-02 22:26:12,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 137 transitions. [2021-11-02 22:26:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 22:26:12,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:12,948 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:12,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:13,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:13,166 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:13,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash 907320634, now seen corresponding path program 1 times [2021-11-02 22:26:13,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:13,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491046056] [2021-11-02 22:26:13,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:13,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:26:13,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:13,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491046056] [2021-11-02 22:26:13,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491046056] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:13,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389814111] [2021-11-02 22:26:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:13,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:13,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:13,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:13,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:26:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:13,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:26:13,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:26:13,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389814111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:13,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:13,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-02 22:26:13,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505391217] [2021-11-02 22:26:13,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:26:13,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:13,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:26:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:26:13,419 INFO L87 Difference]: Start difference. First operand 112 states and 137 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-11-02 22:26:13,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:13,462 INFO L93 Difference]: Finished difference Result 154 states and 201 transitions. [2021-11-02 22:26:13,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:26:13,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 27 [2021-11-02 22:26:13,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:13,465 INFO L225 Difference]: With dead ends: 154 [2021-11-02 22:26:13,466 INFO L226 Difference]: Without dead ends: 152 [2021-11-02 22:26:13,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:26:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-02 22:26:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2021-11-02 22:26:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 120 states have (on average 1.2833333333333334) internal successors, (154), 122 states have internal predecessors, (154), 7 states have call successors, (7), 6 states have call predecessors, (7), 14 states have return successors, (17), 17 states have call predecessors, (17), 6 states have call successors, (17) [2021-11-02 22:26:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 178 transitions. [2021-11-02 22:26:13,481 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 178 transitions. Word has length 27 [2021-11-02 22:26:13,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:13,481 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 178 transitions. [2021-11-02 22:26:13,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-11-02 22:26:13,482 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 178 transitions. [2021-11-02 22:26:13,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 22:26:13,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:13,483 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:13,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:13,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-02 22:26:13,701 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:13,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:13,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1937831374, now seen corresponding path program 1 times [2021-11-02 22:26:13,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:13,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707067030] [2021-11-02 22:26:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:13,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:26:13,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:13,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707067030] [2021-11-02 22:26:13,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707067030] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:13,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824139005] [2021-11-02 22:26:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:13,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:13,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:13,826 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:13,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:26:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:13,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:26:13,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:26:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824139005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:14,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:26:14,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-02 22:26:14,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395619189] [2021-11-02 22:26:14,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:26:14,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:26:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:26:14,025 INFO L87 Difference]: Start difference. First operand 146 states and 178 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-02 22:26:14,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:14,059 INFO L93 Difference]: Finished difference Result 146 states and 178 transitions. [2021-11-02 22:26:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:26:14,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 28 [2021-11-02 22:26:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:14,063 INFO L225 Difference]: With dead ends: 146 [2021-11-02 22:26:14,064 INFO L226 Difference]: Without dead ends: 130 [2021-11-02 22:26:14,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:26:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-02 22:26:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-02 22:26:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 108 states have (on average 1.1388888888888888) internal successors, (123), 108 states have internal predecessors, (123), 7 states have call successors, (7), 6 states have call predecessors, (7), 12 states have return successors, (15), 15 states have call predecessors, (15), 6 states have call successors, (15) [2021-11-02 22:26:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2021-11-02 22:26:14,088 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 28 [2021-11-02 22:26:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:14,091 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2021-11-02 22:26:14,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-02 22:26:14,091 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2021-11-02 22:26:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 22:26:14,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:14,096 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2021-11-02 22:26:14,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:14,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:14,321 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2093980235, now seen corresponding path program 5 times [2021-11-02 22:26:14,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:14,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981195603] [2021-11-02 22:26:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:14,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:14,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:14,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981195603] [2021-11-02 22:26:14,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981195603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:14,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773454451] [2021-11-02 22:26:14,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:26:14,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:14,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:14,464 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:14,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:26:14,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 22:26:14,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:14,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:26:14,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:14,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773454451] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:14,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:14,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-11-02 22:26:14,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605146355] [2021-11-02 22:26:14,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 22:26:14,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 22:26:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:26:14,730 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 9 states have internal predecessors, (27), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:14,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:14,952 INFO L93 Difference]: Finished difference Result 168 states and 174 transitions. [2021-11-02 22:26:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:26:14,953 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 9 states have internal predecessors, (27), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-02 22:26:14,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:14,955 INFO L225 Difference]: With dead ends: 168 [2021-11-02 22:26:14,955 INFO L226 Difference]: Without dead ends: 167 [2021-11-02 22:26:14,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:26:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-02 22:26:14,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2021-11-02 22:26:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 129 states have (on average 1.1395348837209303) internal successors, (147), 129 states have internal predecessors, (147), 8 states have call successors, (8), 7 states have call predecessors, (8), 15 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-02 22:26:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 173 transitions. [2021-11-02 22:26:14,964 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 173 transitions. Word has length 33 [2021-11-02 22:26:14,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:14,964 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 173 transitions. [2021-11-02 22:26:14,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 9 states have internal predecessors, (27), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 173 transitions. [2021-11-02 22:26:14,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:26:14,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:14,966 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2021-11-02 22:26:15,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:15,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:26:15,181 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:15,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:15,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1928562697, now seen corresponding path program 6 times [2021-11-02 22:26:15,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:15,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192784058] [2021-11-02 22:26:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:15,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:15,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:15,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192784058] [2021-11-02 22:26:15,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192784058] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:15,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049216329] [2021-11-02 22:26:15,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:26:15,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:15,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:15,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:15,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:26:15,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 22:26:15,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:15,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:26:15,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:15,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049216329] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:15,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:15,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-11-02 22:26:15,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523971496] [2021-11-02 22:26:15,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 22:26:15,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:15,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 22:26:15,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:26:15,634 INFO L87 Difference]: Start difference. First operand 155 states and 173 transitions. Second operand has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 10 states have internal predecessors, (31), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:15,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:15,870 INFO L93 Difference]: Finished difference Result 195 states and 202 transitions. [2021-11-02 22:26:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:26:15,870 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 10 states have internal predecessors, (31), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-02 22:26:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:15,872 INFO L225 Difference]: With dead ends: 195 [2021-11-02 22:26:15,872 INFO L226 Difference]: Without dead ends: 194 [2021-11-02 22:26:15,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:26:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-02 22:26:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 180. [2021-11-02 22:26:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 150 states have (on average 1.14) internal successors, (171), 150 states have internal predecessors, (171), 9 states have call successors, (9), 8 states have call predecessors, (9), 18 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2021-11-02 22:26:15,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 201 transitions. [2021-11-02 22:26:15,884 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 201 transitions. Word has length 38 [2021-11-02 22:26:15,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:15,884 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 201 transitions. [2021-11-02 22:26:15,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 10 states have internal predecessors, (31), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:15,885 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 201 transitions. [2021-11-02 22:26:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 22:26:15,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:15,890 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:15,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:16,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:16,107 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash -949486294, now seen corresponding path program 2 times [2021-11-02 22:26:16,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:16,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654109359] [2021-11-02 22:26:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:16,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-02 22:26:16,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:16,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654109359] [2021-11-02 22:26:16,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654109359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:16,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030586087] [2021-11-02 22:26:16,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:26:16,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:16,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:16,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:16,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:26:16,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:26:16,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:16,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:26:16,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-02 22:26:16,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030586087] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:16,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:16,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-02 22:26:16,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028517225] [2021-11-02 22:26:16,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:26:16,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:26:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:26:16,500 INFO L87 Difference]: Start difference. First operand 180 states and 201 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-11-02 22:26:16,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:16,539 INFO L93 Difference]: Finished difference Result 242 states and 277 transitions. [2021-11-02 22:26:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:26:16,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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 39 [2021-11-02 22:26:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:16,543 INFO L225 Difference]: With dead ends: 242 [2021-11-02 22:26:16,543 INFO L226 Difference]: Without dead ends: 220 [2021-11-02 22:26:16,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:26:16,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-02 22:26:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2021-11-02 22:26:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 179 states have (on average 1.111731843575419) internal successors, (199), 178 states have internal predecessors, (199), 9 states have call successors, (9), 8 states have call predecessors, (9), 22 states have return successors, (26), 26 states have call predecessors, (26), 8 states have call successors, (26) [2021-11-02 22:26:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2021-11-02 22:26:16,555 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 39 [2021-11-02 22:26:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:16,555 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2021-11-02 22:26:16,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-11-02 22:26:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2021-11-02 22:26:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 22:26:16,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:16,557 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2021-11-02 22:26:16,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:16,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:16,765 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1955299061, now seen corresponding path program 7 times [2021-11-02 22:26:16,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:16,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546235005] [2021-11-02 22:26:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:16,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:16,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:16,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546235005] [2021-11-02 22:26:16,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546235005] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:16,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495262336] [2021-11-02 22:26:16,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:26:16,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:16,993 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:17,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:26:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:17,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 22:26:17,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:17,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495262336] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:17,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:17,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-11-02 22:26:17,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719496401] [2021-11-02 22:26:17,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 22:26:17,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 22:26:17,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-02 22:26:17,271 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 11 states have internal predecessors, (35), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:17,542 INFO L93 Difference]: Finished difference Result 262 states and 270 transitions. [2021-11-02 22:26:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:26:17,542 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 11 states have internal predecessors, (35), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-02 22:26:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:17,544 INFO L225 Difference]: With dead ends: 262 [2021-11-02 22:26:17,544 INFO L226 Difference]: Without dead ends: 261 [2021-11-02 22:26:17,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2021-11-02 22:26:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-02 22:26:17,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 245. [2021-11-02 22:26:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 206 states have (on average 1.1116504854368932) internal successors, (229), 205 states have internal predecessors, (229), 10 states have call successors, (10), 9 states have call predecessors, (10), 26 states have return successors, (30), 30 states have call predecessors, (30), 9 states have call successors, (30) [2021-11-02 22:26:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 269 transitions. [2021-11-02 22:26:17,557 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 269 transitions. Word has length 43 [2021-11-02 22:26:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:17,557 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 269 transitions. [2021-11-02 22:26:17,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 11 states have internal predecessors, (35), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:17,558 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 269 transitions. [2021-11-02 22:26:17,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 22:26:17,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:17,559 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2021-11-02 22:26:17,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:17,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 22:26:17,777 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:17,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1391404727, now seen corresponding path program 8 times [2021-11-02 22:26:17,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:17,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511928025] [2021-11-02 22:26:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:17,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:17,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:17,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511928025] [2021-11-02 22:26:17,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511928025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:17,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643250145] [2021-11-02 22:26:17,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:26:17,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:17,991 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:18,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 22:26:18,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:26:18,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:18,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:26:18,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:18,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643250145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:18,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:18,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-11-02 22:26:18,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093574552] [2021-11-02 22:26:18,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 22:26:18,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:18,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 22:26:18,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-02 22:26:18,361 INFO L87 Difference]: Start difference. First operand 245 states and 269 transitions. Second operand has 21 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 12 states have internal predecessors, (39), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:18,689 INFO L93 Difference]: Finished difference Result 296 states and 305 transitions. [2021-11-02 22:26:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 22:26:18,690 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 12 states have internal predecessors, (39), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-02 22:26:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:18,692 INFO L225 Difference]: With dead ends: 296 [2021-11-02 22:26:18,693 INFO L226 Difference]: Without dead ends: 295 [2021-11-02 22:26:18,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 22:26:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-02 22:26:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 277. [2021-11-02 22:26:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 233 states have (on average 1.111587982832618) internal successors, (259), 232 states have internal predecessors, (259), 11 states have call successors, (11), 10 states have call predecessors, (11), 30 states have return successors, (34), 34 states have call predecessors, (34), 10 states have call successors, (34) [2021-11-02 22:26:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 304 transitions. [2021-11-02 22:26:18,710 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 304 transitions. Word has length 48 [2021-11-02 22:26:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:18,711 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 304 transitions. [2021-11-02 22:26:18,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 12 states have internal predecessors, (39), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 304 transitions. [2021-11-02 22:26:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 22:26:18,712 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:18,712 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2021-11-02 22:26:18,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:18,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 22:26:18,925 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:18,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1053296693, now seen corresponding path program 9 times [2021-11-02 22:26:18,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:18,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578222292] [2021-11-02 22:26:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:18,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:19,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:19,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578222292] [2021-11-02 22:26:19,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578222292] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:19,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772557027] [2021-11-02 22:26:19,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:26:19,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:19,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:19,173 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:19,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 22:26:19,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 22:26:19,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:19,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:26:19,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:19,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772557027] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:19,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:19,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-11-02 22:26:19,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537209288] [2021-11-02 22:26:19,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 22:26:19,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 22:26:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-11-02 22:26:19,539 INFO L87 Difference]: Start difference. First operand 277 states and 304 transitions. Second operand has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 13 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:19,916 INFO L93 Difference]: Finished difference Result 330 states and 340 transitions. [2021-11-02 22:26:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:26:19,918 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 13 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-02 22:26:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:19,939 INFO L225 Difference]: With dead ends: 330 [2021-11-02 22:26:19,939 INFO L226 Difference]: Without dead ends: 329 [2021-11-02 22:26:19,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=443, Invalid=1039, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 22:26:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-02 22:26:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 309. [2021-11-02 22:26:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 260 states have (on average 1.1115384615384616) internal successors, (289), 259 states have internal predecessors, (289), 12 states have call successors, (12), 11 states have call predecessors, (12), 34 states have return successors, (38), 38 states have call predecessors, (38), 11 states have call successors, (38) [2021-11-02 22:26:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 339 transitions. [2021-11-02 22:26:19,955 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 339 transitions. Word has length 53 [2021-11-02 22:26:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:19,955 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 339 transitions. [2021-11-02 22:26:19,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 13 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 339 transitions. [2021-11-02 22:26:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 22:26:19,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:19,957 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:20,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:20,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 22:26:20,177 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:20,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash 315540026, now seen corresponding path program 3 times [2021-11-02 22:26:20,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:20,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316758406] [2021-11-02 22:26:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:20,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:20,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:20,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:20,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-02 22:26:20,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:20,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316758406] [2021-11-02 22:26:20,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316758406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:20,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923429093] [2021-11-02 22:26:20,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:26:20,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:20,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:20,326 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:20,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 22:26:20,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 22:26:20,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:20,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:26:20,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-02 22:26:20,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923429093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:20,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:20,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-11-02 22:26:20,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219444668] [2021-11-02 22:26:20,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:26:20,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:26:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:26:20,670 INFO L87 Difference]: Start difference. First operand 309 states and 339 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 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) [2021-11-02 22:26:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:20,718 INFO L93 Difference]: Finished difference Result 395 states and 445 transitions. [2021-11-02 22:26:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:26:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 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 51 [2021-11-02 22:26:20,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:20,723 INFO L225 Difference]: With dead ends: 395 [2021-11-02 22:26:20,723 INFO L226 Difference]: Without dead ends: 366 [2021-11-02 22:26:20,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:26:20,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-02 22:26:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 356. [2021-11-02 22:26:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 301 states have (on average 1.0930232558139534) internal successors, (329), 299 states have internal predecessors, (329), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2021-11-02 22:26:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 386 transitions. [2021-11-02 22:26:20,748 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 386 transitions. Word has length 51 [2021-11-02 22:26:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:20,748 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 386 transitions. [2021-11-02 22:26:20,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 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) [2021-11-02 22:26:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 386 transitions. [2021-11-02 22:26:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 22:26:20,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:20,750 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2021-11-02 22:26:20,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:20,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 22:26:20,965 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1017748105, now seen corresponding path program 10 times [2021-11-02 22:26:20,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:20,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760550218] [2021-11-02 22:26:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:20,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:21,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:21,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760550218] [2021-11-02 22:26:21,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760550218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:21,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366912105] [2021-11-02 22:26:21,248 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:26:21,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:21,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:21,253 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:21,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 22:26:21,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:26:21,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:21,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 22:26:21,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:21,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366912105] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:21,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:21,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-11-02 22:26:21,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461478797] [2021-11-02 22:26:21,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 22:26:21,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:21,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 22:26:21,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-11-02 22:26:21,700 INFO L87 Difference]: Start difference. First operand 356 states and 386 transitions. Second operand has 25 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 14 states have internal predecessors, (47), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:22,125 INFO L93 Difference]: Finished difference Result 418 states and 429 transitions. [2021-11-02 22:26:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 22:26:22,126 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 14 states have internal predecessors, (47), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-02 22:26:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:22,129 INFO L225 Difference]: With dead ends: 418 [2021-11-02 22:26:22,129 INFO L226 Difference]: Without dead ends: 417 [2021-11-02 22:26:22,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=507, Invalid=1215, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:26:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-02 22:26:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 395. [2021-11-02 22:26:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 334 states have (on average 1.092814371257485) internal successors, (365), 332 states have internal predecessors, (365), 13 states have call successors, (13), 12 states have call predecessors, (13), 45 states have return successors, (50), 50 states have call predecessors, (50), 12 states have call successors, (50) [2021-11-02 22:26:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 428 transitions. [2021-11-02 22:26:22,148 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 428 transitions. Word has length 58 [2021-11-02 22:26:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:22,148 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 428 transitions. [2021-11-02 22:26:22,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 14 states have internal predecessors, (47), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 428 transitions. [2021-11-02 22:26:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 22:26:22,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:22,150 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1, 1] [2021-11-02 22:26:22,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:22,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:22,368 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash 182059381, now seen corresponding path program 11 times [2021-11-02 22:26:22,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:22,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056969032] [2021-11-02 22:26:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:22,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:22,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:22,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056969032] [2021-11-02 22:26:22,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056969032] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:22,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045859302] [2021-11-02 22:26:22,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:26:22,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:22,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:22,661 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:22,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 22:26:22,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-02 22:26:22,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:22,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 22:26:22,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:23,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045859302] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:23,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:23,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-11-02 22:26:23,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424354123] [2021-11-02 22:26:23,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-02 22:26:23,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-02 22:26:23,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:26:23,071 INFO L87 Difference]: Start difference. First operand 395 states and 428 transitions. Second operand has 27 states, 25 states have (on average 2.04) internal successors, (51), 15 states have internal predecessors, (51), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:23,531 INFO L93 Difference]: Finished difference Result 459 states and 471 transitions. [2021-11-02 22:26:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-02 22:26:23,532 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.04) internal successors, (51), 15 states have internal predecessors, (51), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-02 22:26:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:23,535 INFO L225 Difference]: With dead ends: 459 [2021-11-02 22:26:23,535 INFO L226 Difference]: Without dead ends: 458 [2021-11-02 22:26:23,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=611, Invalid=1459, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 22:26:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-02 22:26:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 434. [2021-11-02 22:26:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 367 states have (on average 1.0926430517711172) internal successors, (401), 365 states have internal predecessors, (401), 14 states have call successors, (14), 13 states have call predecessors, (14), 50 states have return successors, (55), 55 states have call predecessors, (55), 13 states have call successors, (55) [2021-11-02 22:26:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 470 transitions. [2021-11-02 22:26:23,554 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 470 transitions. Word has length 63 [2021-11-02 22:26:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:23,555 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 470 transitions. [2021-11-02 22:26:23,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.04) internal successors, (51), 15 states have internal predecessors, (51), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 470 transitions. [2021-11-02 22:26:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 22:26:23,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:23,557 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1, 1] [2021-11-02 22:26:23,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:23,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:26:23,777 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:23,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:23,778 INFO L85 PathProgramCache]: Analyzing trace with hash 768488503, now seen corresponding path program 12 times [2021-11-02 22:26:23,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:23,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66025416] [2021-11-02 22:26:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:23,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:24,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:24,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66025416] [2021-11-02 22:26:24,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66025416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:24,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928132176] [2021-11-02 22:26:24,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:26:24,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:24,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:24,141 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:24,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:26:24,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-02 22:26:24,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:24,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-02 22:26:24,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:24,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928132176] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:24,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:24,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-11-02 22:26:24,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920900895] [2021-11-02 22:26:24,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-02 22:26:24,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-02 22:26:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2021-11-02 22:26:24,634 INFO L87 Difference]: Start difference. First operand 434 states and 470 transitions. Second operand has 29 states, 27 states have (on average 2.037037037037037) internal successors, (55), 16 states have internal predecessors, (55), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:25,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:25,159 INFO L93 Difference]: Finished difference Result 500 states and 513 transitions. [2021-11-02 22:26:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-02 22:26:25,160 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.037037037037037) internal successors, (55), 16 states have internal predecessors, (55), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-02 22:26:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:25,163 INFO L225 Difference]: With dead ends: 500 [2021-11-02 22:26:25,163 INFO L226 Difference]: Without dead ends: 499 [2021-11-02 22:26:25,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=725, Invalid=1725, Unknown=0, NotChecked=0, Total=2450 [2021-11-02 22:26:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-02 22:26:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 473. [2021-11-02 22:26:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 400 states have (on average 1.0925) internal successors, (437), 398 states have internal predecessors, (437), 15 states have call successors, (15), 14 states have call predecessors, (15), 55 states have return successors, (60), 60 states have call predecessors, (60), 14 states have call successors, (60) [2021-11-02 22:26:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 512 transitions. [2021-11-02 22:26:25,182 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 512 transitions. Word has length 68 [2021-11-02 22:26:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:25,182 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 512 transitions. [2021-11-02 22:26:25,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.037037037037037) internal successors, (55), 16 states have internal predecessors, (55), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 512 transitions. [2021-11-02 22:26:25,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 22:26:25,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:25,184 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:25,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:25,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:25,397 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:25,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1496867286, now seen corresponding path program 4 times [2021-11-02 22:26:25,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:25,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196873481] [2021-11-02 22:26:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:25,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:25,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:25,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-02 22:26:25,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:25,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196873481] [2021-11-02 22:26:25,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196873481] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:25,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230241605] [2021-11-02 22:26:25,543 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:26:25,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:25,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:25,554 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:25,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:26:25,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:26:25,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:25,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:26:25,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-02 22:26:26,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230241605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:26,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:26,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-11-02 22:26:26,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698089127] [2021-11-02 22:26:26,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:26:26,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:26,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:26:26,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:26:26,044 INFO L87 Difference]: Start difference. First operand 473 states and 512 transitions. Second operand has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 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) [2021-11-02 22:26:26,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:26,101 INFO L93 Difference]: Finished difference Result 583 states and 648 transitions. [2021-11-02 22:26:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:26:26,101 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 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 63 [2021-11-02 22:26:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:26,105 INFO L225 Difference]: With dead ends: 583 [2021-11-02 22:26:26,105 INFO L226 Difference]: Without dead ends: 547 [2021-11-02 22:26:26,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:26:26,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-02 22:26:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 534. [2021-11-02 22:26:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 453 states have (on average 1.0794701986754967) internal successors, (489), 450 states have internal predecessors, (489), 15 states have call successors, (15), 14 states have call predecessors, (15), 63 states have return successors, (69), 69 states have call predecessors, (69), 14 states have call successors, (69) [2021-11-02 22:26:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 573 transitions. [2021-11-02 22:26:26,126 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 573 transitions. Word has length 63 [2021-11-02 22:26:26,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:26,126 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 573 transitions. [2021-11-02 22:26:26,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 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) [2021-11-02 22:26:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 573 transitions. [2021-11-02 22:26:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 22:26:26,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:26,128 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2021-11-02 22:26:26,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:26,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:26,341 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:26,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:26,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1622502069, now seen corresponding path program 13 times [2021-11-02 22:26:26,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:26,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983791200] [2021-11-02 22:26:26,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:26,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:26,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:26,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983791200] [2021-11-02 22:26:26,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983791200] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:26,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769210040] [2021-11-02 22:26:26,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:26:26,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:26,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:26,801 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:26,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 22:26:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:27,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-02 22:26:27,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:27,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769210040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:27,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:27,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-11-02 22:26:27,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545593397] [2021-11-02 22:26:27,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-02 22:26:27,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:27,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-02 22:26:27,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2021-11-02 22:26:27,337 INFO L87 Difference]: Start difference. First operand 534 states and 573 transitions. Second operand has 31 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 17 states have internal predecessors, (59), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:27,929 INFO L93 Difference]: Finished difference Result 609 states and 623 transitions. [2021-11-02 22:26:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-02 22:26:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 17 states have internal predecessors, (59), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 22:26:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:27,934 INFO L225 Difference]: With dead ends: 609 [2021-11-02 22:26:27,934 INFO L226 Difference]: Without dead ends: 608 [2021-11-02 22:26:27,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=806, Invalid=1950, Unknown=0, NotChecked=0, Total=2756 [2021-11-02 22:26:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-02 22:26:27,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 580. [2021-11-02 22:26:27,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 492 states have (on average 1.079268292682927) internal successors, (531), 489 states have internal predecessors, (531), 16 states have call successors, (16), 15 states have call predecessors, (16), 69 states have return successors, (75), 75 states have call predecessors, (75), 15 states have call successors, (75) [2021-11-02 22:26:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 622 transitions. [2021-11-02 22:26:27,978 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 622 transitions. Word has length 73 [2021-11-02 22:26:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:27,979 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 622 transitions. [2021-11-02 22:26:27,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 17 states have internal predecessors, (59), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 622 transitions. [2021-11-02 22:26:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 22:26:27,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:27,981 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1, 1] [2021-11-02 22:26:28,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:28,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-02 22:26:28,209 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:28,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:28,210 INFO L85 PathProgramCache]: Analyzing trace with hash -488467721, now seen corresponding path program 14 times [2021-11-02 22:26:28,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:28,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314598566] [2021-11-02 22:26:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:28,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:28,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:28,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314598566] [2021-11-02 22:26:28,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314598566] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:28,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199933566] [2021-11-02 22:26:28,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:26:28,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:28,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:28,617 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:28,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 22:26:28,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:26:28,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:28,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-02 22:26:28,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:29,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199933566] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:29,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:29,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-11-02 22:26:29,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071512104] [2021-11-02 22:26:29,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-02 22:26:29,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-02 22:26:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:26:29,190 INFO L87 Difference]: Start difference. First operand 580 states and 622 transitions. Second operand has 33 states, 31 states have (on average 2.032258064516129) internal successors, (63), 18 states have internal predecessors, (63), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:29,857 INFO L93 Difference]: Finished difference Result 657 states and 672 transitions. [2021-11-02 22:26:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-02 22:26:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.032258064516129) internal successors, (63), 18 states have internal predecessors, (63), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-02 22:26:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:29,862 INFO L225 Difference]: With dead ends: 657 [2021-11-02 22:26:29,862 INFO L226 Difference]: Without dead ends: 656 [2021-11-02 22:26:29,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=936, Invalid=2256, Unknown=0, NotChecked=0, Total=3192 [2021-11-02 22:26:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-02 22:26:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 626. [2021-11-02 22:26:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 531 states have (on average 1.07909604519774) internal successors, (573), 528 states have internal predecessors, (573), 17 states have call successors, (17), 16 states have call predecessors, (17), 75 states have return successors, (81), 81 states have call predecessors, (81), 16 states have call successors, (81) [2021-11-02 22:26:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 671 transitions. [2021-11-02 22:26:29,891 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 671 transitions. Word has length 78 [2021-11-02 22:26:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:29,892 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 671 transitions. [2021-11-02 22:26:29,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.032258064516129) internal successors, (63), 18 states have internal predecessors, (63), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 671 transitions. [2021-11-02 22:26:29,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:26:29,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:29,895 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1, 1] [2021-11-02 22:26:29,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:30,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-02 22:26:30,121 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1733182453, now seen corresponding path program 15 times [2021-11-02 22:26:30,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:30,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205212198] [2021-11-02 22:26:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:30,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:30,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:30,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205212198] [2021-11-02 22:26:30,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205212198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:30,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118670495] [2021-11-02 22:26:30,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:26:30,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:30,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:30,689 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:30,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 22:26:31,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-02 22:26:31,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:31,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-02 22:26:31,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:31,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118670495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:31,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:31,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-11-02 22:26:31,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313433128] [2021-11-02 22:26:31,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-02 22:26:31,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-02 22:26:31,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 22:26:31,372 INFO L87 Difference]: Start difference. First operand 626 states and 671 transitions. Second operand has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 19 states have internal predecessors, (67), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:32,128 INFO L93 Difference]: Finished difference Result 705 states and 721 transitions. [2021-11-02 22:26:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-02 22:26:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 19 states have internal predecessors, (67), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 22:26:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:32,134 INFO L225 Difference]: With dead ends: 705 [2021-11-02 22:26:32,134 INFO L226 Difference]: Without dead ends: 704 [2021-11-02 22:26:32,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1076, Invalid=2584, Unknown=0, NotChecked=0, Total=3660 [2021-11-02 22:26:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-02 22:26:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 672. [2021-11-02 22:26:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 570 states have (on average 1.0789473684210527) internal successors, (615), 567 states have internal predecessors, (615), 18 states have call successors, (18), 17 states have call predecessors, (18), 81 states have return successors, (87), 87 states have call predecessors, (87), 17 states have call successors, (87) [2021-11-02 22:26:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 720 transitions. [2021-11-02 22:26:32,162 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 720 transitions. Word has length 83 [2021-11-02 22:26:32,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:32,165 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 720 transitions. [2021-11-02 22:26:32,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 19 states have internal predecessors, (67), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:32,165 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 720 transitions. [2021-11-02 22:26:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 22:26:32,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:32,167 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:32,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:32,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-02 22:26:32,393 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:32,394 INFO L85 PathProgramCache]: Analyzing trace with hash -21207238, now seen corresponding path program 5 times [2021-11-02 22:26:32,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:32,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055093024] [2021-11-02 22:26:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:32,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-02 22:26:32,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:32,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055093024] [2021-11-02 22:26:32,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055093024] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:32,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359647703] [2021-11-02 22:26:32,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:26:32,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:32,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:32,579 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:32,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 22:26:32,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-02 22:26:32,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:32,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:26:32,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-02 22:26:33,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359647703] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:33,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:33,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-11-02 22:26:33,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66294670] [2021-11-02 22:26:33,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 22:26:33,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:33,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 22:26:33,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:26:33,209 INFO L87 Difference]: Start difference. First operand 672 states and 720 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 16 states have internal predecessors, (48), 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) [2021-11-02 22:26:33,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:33,288 INFO L93 Difference]: Finished difference Result 806 states and 886 transitions. [2021-11-02 22:26:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:26:33,289 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 16 states have internal predecessors, (48), 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 75 [2021-11-02 22:26:33,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:33,294 INFO L225 Difference]: With dead ends: 806 [2021-11-02 22:26:33,294 INFO L226 Difference]: Without dead ends: 763 [2021-11-02 22:26:33,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:26:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-11-02 22:26:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 747. [2021-11-02 22:26:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 635 states have (on average 1.0692913385826772) internal successors, (679), 631 states have internal predecessors, (679), 18 states have call successors, (18), 17 states have call predecessors, (18), 91 states have return successors, (98), 98 states have call predecessors, (98), 17 states have call successors, (98) [2021-11-02 22:26:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 795 transitions. [2021-11-02 22:26:33,324 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 795 transitions. Word has length 75 [2021-11-02 22:26:33,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:33,325 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 795 transitions. [2021-11-02 22:26:33,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 16 states have internal predecessors, (48), 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) [2021-11-02 22:26:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 795 transitions. [2021-11-02 22:26:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:26:33,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:33,329 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1, 1] [2021-11-02 22:26:33,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:33,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-02 22:26:33,547 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:33,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:33,548 INFO L85 PathProgramCache]: Analyzing trace with hash -199261769, now seen corresponding path program 16 times [2021-11-02 22:26:33,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:33,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120936213] [2021-11-02 22:26:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:33,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:34,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:34,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120936213] [2021-11-02 22:26:34,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120936213] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:34,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840893060] [2021-11-02 22:26:34,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:26:34,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:34,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:34,086 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:34,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 22:26:34,583 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:26:34,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:34,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-02 22:26:34,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:34,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840893060] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:34,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:34,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-11-02 22:26:34,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215460581] [2021-11-02 22:26:34,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-02 22:26:34,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:34,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-02 22:26:34,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 22:26:34,972 INFO L87 Difference]: Start difference. First operand 747 states and 795 transitions. Second operand has 37 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 20 states have internal predecessors, (71), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:35,789 INFO L93 Difference]: Finished difference Result 835 states and 852 transitions. [2021-11-02 22:26:35,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 22:26:35,792 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 20 states have internal predecessors, (71), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-02 22:26:35,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:35,797 INFO L225 Difference]: With dead ends: 835 [2021-11-02 22:26:35,797 INFO L226 Difference]: Without dead ends: 834 [2021-11-02 22:26:35,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1174, Invalid=2858, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 22:26:35,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-11-02 22:26:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 800. [2021-11-02 22:26:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 680 states have (on average 1.0691176470588235) internal successors, (727), 676 states have internal predecessors, (727), 19 states have call successors, (19), 18 states have call predecessors, (19), 98 states have return successors, (105), 105 states have call predecessors, (105), 18 states have call successors, (105) [2021-11-02 22:26:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 851 transitions. [2021-11-02 22:26:35,851 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 851 transitions. Word has length 88 [2021-11-02 22:26:35,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:35,852 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 851 transitions. [2021-11-02 22:26:35,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 20 states have internal predecessors, (71), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:35,853 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 851 transitions. [2021-11-02 22:26:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 22:26:35,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:35,855 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1, 1] [2021-11-02 22:26:35,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:36,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-02 22:26:36,068 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:36,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash 613977397, now seen corresponding path program 17 times [2021-11-02 22:26:36,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:36,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834139399] [2021-11-02 22:26:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:36,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:36,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:36,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834139399] [2021-11-02 22:26:36,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834139399] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:36,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731903474] [2021-11-02 22:26:36,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:26:36,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:36,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:36,726 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:36,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-02 22:26:37,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-02 22:26:37,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:37,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-02 22:26:37,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:37,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731903474] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:37,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:37,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-11-02 22:26:37,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836250606] [2021-11-02 22:26:37,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-02 22:26:37,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:37,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-02 22:26:37,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 22:26:37,589 INFO L87 Difference]: Start difference. First operand 800 states and 851 transitions. Second operand has 39 states, 37 states have (on average 2.027027027027027) internal successors, (75), 21 states have internal predecessors, (75), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:38,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:38,480 INFO L93 Difference]: Finished difference Result 890 states and 908 transitions. [2021-11-02 22:26:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 22:26:38,481 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 2.027027027027027) internal successors, (75), 21 states have internal predecessors, (75), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-02 22:26:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:38,486 INFO L225 Difference]: With dead ends: 890 [2021-11-02 22:26:38,486 INFO L226 Difference]: Without dead ends: 889 [2021-11-02 22:26:38,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1330, Invalid=3226, Unknown=0, NotChecked=0, Total=4556 [2021-11-02 22:26:38,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-11-02 22:26:38,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 853. [2021-11-02 22:26:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 725 states have (on average 1.0689655172413792) internal successors, (775), 721 states have internal predecessors, (775), 20 states have call successors, (20), 19 states have call predecessors, (20), 105 states have return successors, (112), 112 states have call predecessors, (112), 19 states have call successors, (112) [2021-11-02 22:26:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 907 transitions. [2021-11-02 22:26:38,526 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 907 transitions. Word has length 93 [2021-11-02 22:26:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:38,527 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 907 transitions. [2021-11-02 22:26:38,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 2.027027027027027) internal successors, (75), 21 states have internal predecessors, (75), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 907 transitions. [2021-11-02 22:26:38,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 22:26:38,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:38,532 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:38,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:38,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:38,757 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:38,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash -709771478, now seen corresponding path program 6 times [2021-11-02 22:26:38,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:38,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673282565] [2021-11-02 22:26:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:38,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:38,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:38,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-02 22:26:39,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:39,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673282565] [2021-11-02 22:26:39,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673282565] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:39,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413792603] [2021-11-02 22:26:39,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:26:39,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:39,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:39,020 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:39,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-02 22:26:39,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-02 22:26:39,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:39,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:26:39,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-02 22:26:39,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413792603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:39,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:39,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-11-02 22:26:39,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556319156] [2021-11-02 22:26:39,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:26:39,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:39,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:26:39,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:26:39,770 INFO L87 Difference]: Start difference. First operand 853 states and 907 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-02 22:26:39,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:39,877 INFO L93 Difference]: Finished difference Result 1003 states and 1093 transitions. [2021-11-02 22:26:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 22:26:39,878 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 87 [2021-11-02 22:26:39,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:39,883 INFO L225 Difference]: With dead ends: 1003 [2021-11-02 22:26:39,883 INFO L226 Difference]: Without dead ends: 953 [2021-11-02 22:26:39,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:26:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-11-02 22:26:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 935. [2021-11-02 22:26:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 796 states have (on average 1.0615577889447236) internal successors, (845), 791 states have internal predecessors, (845), 20 states have call successors, (20), 19 states have call predecessors, (20), 116 states have return successors, (124), 124 states have call predecessors, (124), 19 states have call successors, (124) [2021-11-02 22:26:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 989 transitions. [2021-11-02 22:26:39,916 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 989 transitions. Word has length 87 [2021-11-02 22:26:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:39,916 INFO L470 AbstractCegarLoop]: Abstraction has 935 states and 989 transitions. [2021-11-02 22:26:39,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-02 22:26:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 989 transitions. [2021-11-02 22:26:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 22:26:39,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:39,920 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1, 1] [2021-11-02 22:26:39,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:40,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-02 22:26:40,145 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:40,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -200212361, now seen corresponding path program 18 times [2021-11-02 22:26:40,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:40,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390940372] [2021-11-02 22:26:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:40,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:40,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:40,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390940372] [2021-11-02 22:26:40,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390940372] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:40,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660909115] [2021-11-02 22:26:40,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:26:40,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:40,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:40,687 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:40,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-02 22:26:41,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-02 22:26:41,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:41,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-02 22:26:41,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:41,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660909115] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:41,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:41,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-11-02 22:26:41,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11882982] [2021-11-02 22:26:41,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-02 22:26:41,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:41,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-02 22:26:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 22:26:41,470 INFO L87 Difference]: Start difference. First operand 935 states and 989 transitions. Second operand has 41 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 22 states have internal predecessors, (79), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:42,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:42,238 INFO L93 Difference]: Finished difference Result 1034 states and 1053 transitions. [2021-11-02 22:26:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-02 22:26:42,238 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 22 states have internal predecessors, (79), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-02 22:26:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:42,244 INFO L225 Difference]: With dead ends: 1034 [2021-11-02 22:26:42,244 INFO L226 Difference]: Without dead ends: 1033 [2021-11-02 22:26:42,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1439, Invalid=3531, Unknown=0, NotChecked=0, Total=4970 [2021-11-02 22:26:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-11-02 22:26:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 995. [2021-11-02 22:26:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 847 states have (on average 1.0613931523022433) internal successors, (899), 842 states have internal predecessors, (899), 21 states have call successors, (21), 20 states have call predecessors, (21), 124 states have return successors, (132), 132 states have call predecessors, (132), 20 states have call successors, (132) [2021-11-02 22:26:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1052 transitions. [2021-11-02 22:26:42,276 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1052 transitions. Word has length 98 [2021-11-02 22:26:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:42,277 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1052 transitions. [2021-11-02 22:26:42,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 22 states have internal predecessors, (79), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1052 transitions. [2021-11-02 22:26:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 22:26:42,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:42,279 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1, 1] [2021-11-02 22:26:42,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:42,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-02 22:26:42,493 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1115142539, now seen corresponding path program 19 times [2021-11-02 22:26:42,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:42,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502996312] [2021-11-02 22:26:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:42,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:43,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:43,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502996312] [2021-11-02 22:26:43,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502996312] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:43,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774476393] [2021-11-02 22:26:43,156 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:26:43,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:43,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:43,157 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:43,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-02 22:26:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:43,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-02 22:26:43,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:43,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774476393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:43,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:43,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-11-02 22:26:43,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871780236] [2021-11-02 22:26:43,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-02 22:26:43,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-02 22:26:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2021-11-02 22:26:43,999 INFO L87 Difference]: Start difference. First operand 995 states and 1052 transitions. Second operand has 43 states, 41 states have (on average 2.024390243902439) internal successors, (83), 23 states have internal predecessors, (83), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:44,808 INFO L93 Difference]: Finished difference Result 1096 states and 1116 transitions. [2021-11-02 22:26:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-02 22:26:44,808 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.024390243902439) internal successors, (83), 23 states have internal predecessors, (83), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-02 22:26:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:44,813 INFO L225 Difference]: With dead ends: 1096 [2021-11-02 22:26:44,813 INFO L226 Difference]: Without dead ends: 1095 [2021-11-02 22:26:44,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1611, Invalid=3939, Unknown=0, NotChecked=0, Total=5550 [2021-11-02 22:26:44,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2021-11-02 22:26:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1055. [2021-11-02 22:26:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 898 states have (on average 1.0612472160356348) internal successors, (953), 893 states have internal predecessors, (953), 22 states have call successors, (22), 21 states have call predecessors, (22), 132 states have return successors, (140), 140 states have call predecessors, (140), 21 states have call successors, (140) [2021-11-02 22:26:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1115 transitions. [2021-11-02 22:26:44,848 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1115 transitions. Word has length 103 [2021-11-02 22:26:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:44,848 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 1115 transitions. [2021-11-02 22:26:44,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.024390243902439) internal successors, (83), 23 states have internal predecessors, (83), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1115 transitions. [2021-11-02 22:26:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 22:26:44,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:44,851 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1, 1, 1, 1] [2021-11-02 22:26:44,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:45,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-02 22:26:45,065 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:45,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1237119177, now seen corresponding path program 20 times [2021-11-02 22:26:45,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:45,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308031152] [2021-11-02 22:26:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:45,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:45,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:45,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308031152] [2021-11-02 22:26:45,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308031152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:45,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563902150] [2021-11-02 22:26:45,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:26:45,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:45,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:45,885 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:45,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-02 22:26:46,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:26:46,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:46,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-02 22:26:46,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:46,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563902150] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:46,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:46,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-11-02 22:26:46,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750975339] [2021-11-02 22:26:46,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-02 22:26:46,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-02 22:26:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2021-11-02 22:26:46,794 INFO L87 Difference]: Start difference. First operand 1055 states and 1115 transitions. Second operand has 45 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 24 states have internal predecessors, (87), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:47,723 INFO L93 Difference]: Finished difference Result 1158 states and 1179 transitions. [2021-11-02 22:26:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-02 22:26:47,733 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 24 states have internal predecessors, (87), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-02 22:26:47,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:47,739 INFO L225 Difference]: With dead ends: 1158 [2021-11-02 22:26:47,739 INFO L226 Difference]: Without dead ends: 1157 [2021-11-02 22:26:47,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1793, Invalid=4369, Unknown=0, NotChecked=0, Total=6162 [2021-11-02 22:26:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-02 22:26:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1115. [2021-11-02 22:26:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 949 states have (on average 1.0611169652265542) internal successors, (1007), 944 states have internal predecessors, (1007), 23 states have call successors, (23), 22 states have call predecessors, (23), 140 states have return successors, (148), 148 states have call predecessors, (148), 22 states have call successors, (148) [2021-11-02 22:26:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1178 transitions. [2021-11-02 22:26:47,778 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1178 transitions. Word has length 108 [2021-11-02 22:26:47,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:47,779 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1178 transitions. [2021-11-02 22:26:47,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 24 states have internal predecessors, (87), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1178 transitions. [2021-11-02 22:26:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 22:26:47,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:47,782 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:47,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:48,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:48,005 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:48,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash 620596282, now seen corresponding path program 7 times [2021-11-02 22:26:48,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:48,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339232792] [2021-11-02 22:26:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:48,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:48,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:48,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:48,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:48,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:48,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-02 22:26:48,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:48,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339232792] [2021-11-02 22:26:48,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339232792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:48,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410099931] [2021-11-02 22:26:48,264 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:26:48,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:48,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:48,265 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:48,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-02 22:26:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:49,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:26:49,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-02 22:26:49,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410099931] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:49,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:49,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-11-02 22:26:49,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326108628] [2021-11-02 22:26:49,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:26:49,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:49,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:26:49,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:26:49,403 INFO L87 Difference]: Start difference. First operand 1115 states and 1178 transitions. Second operand has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 20 states have internal predecessors, (60), 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) [2021-11-02 22:26:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:49,474 INFO L93 Difference]: Finished difference Result 1289 states and 1394 transitions. [2021-11-02 22:26:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:26:49,475 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 20 states have internal predecessors, (60), 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 99 [2021-11-02 22:26:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:49,480 INFO L225 Difference]: With dead ends: 1289 [2021-11-02 22:26:49,481 INFO L226 Difference]: Without dead ends: 1232 [2021-11-02 22:26:49,482 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:26:49,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-11-02 22:26:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1211. [2021-11-02 22:26:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1032 states have (on average 1.055232558139535) internal successors, (1089), 1026 states have internal predecessors, (1089), 23 states have call successors, (23), 22 states have call predecessors, (23), 153 states have return successors, (162), 162 states have call predecessors, (162), 22 states have call successors, (162) [2021-11-02 22:26:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1274 transitions. [2021-11-02 22:26:49,517 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1274 transitions. Word has length 99 [2021-11-02 22:26:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:49,517 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 1274 transitions. [2021-11-02 22:26:49,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 20 states have internal predecessors, (60), 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) [2021-11-02 22:26:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1274 transitions. [2021-11-02 22:26:49,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 22:26:49,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:49,520 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1, 1, 1, 1] [2021-11-02 22:26:49,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:49,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:49,737 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1240371275, now seen corresponding path program 21 times [2021-11-02 22:26:49,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:49,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949144250] [2021-11-02 22:26:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:49,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:50,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:50,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949144250] [2021-11-02 22:26:50,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949144250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:50,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129831966] [2021-11-02 22:26:50,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:26:50,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:50,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:50,540 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:50,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-02 22:26:51,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-02 22:26:51,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:51,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-02 22:26:51,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:51,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129831966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:51,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:51,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-11-02 22:26:51,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602869807] [2021-11-02 22:26:51,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-02 22:26:51,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-02 22:26:51,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2021-11-02 22:26:51,518 INFO L87 Difference]: Start difference. First operand 1211 states and 1274 transitions. Second operand has 47 states, 45 states have (on average 2.022222222222222) internal successors, (91), 25 states have internal predecessors, (91), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:52,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:52,558 INFO L93 Difference]: Finished difference Result 1323 states and 1345 transitions. [2021-11-02 22:26:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-02 22:26:52,559 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 2.022222222222222) internal successors, (91), 25 states have internal predecessors, (91), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-02 22:26:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:52,567 INFO L225 Difference]: With dead ends: 1323 [2021-11-02 22:26:52,567 INFO L226 Difference]: Without dead ends: 1322 [2021-11-02 22:26:52,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1919, Invalid=4723, Unknown=0, NotChecked=0, Total=6642 [2021-11-02 22:26:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-11-02 22:26:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1278. [2021-11-02 22:26:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1089 states have (on average 1.0550964187327823) internal successors, (1149), 1083 states have internal predecessors, (1149), 24 states have call successors, (24), 23 states have call predecessors, (24), 162 states have return successors, (171), 171 states have call predecessors, (171), 23 states have call successors, (171) [2021-11-02 22:26:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1344 transitions. [2021-11-02 22:26:52,608 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1344 transitions. Word has length 113 [2021-11-02 22:26:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:52,608 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1344 transitions. [2021-11-02 22:26:52,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 2.022222222222222) internal successors, (91), 25 states have internal predecessors, (91), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1344 transitions. [2021-11-02 22:26:52,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-02 22:26:52,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:52,611 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1] [2021-11-02 22:26:52,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:52,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-02 22:26:52,829 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:52,830 INFO L85 PathProgramCache]: Analyzing trace with hash 255962615, now seen corresponding path program 22 times [2021-11-02 22:26:52,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:52,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712725123] [2021-11-02 22:26:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:52,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:53,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:53,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712725123] [2021-11-02 22:26:53,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712725123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:53,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062992] [2021-11-02 22:26:53,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:26:53,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:53,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:53,665 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:53,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-02 22:26:54,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:26:54,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:54,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-02 22:26:54,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:54,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:54,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:54,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-11-02 22:26:54,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291715116] [2021-11-02 22:26:54,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-02 22:26:54,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-02 22:26:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2021-11-02 22:26:54,607 INFO L87 Difference]: Start difference. First operand 1278 states and 1344 transitions. Second operand has 49 states, 47 states have (on average 2.021276595744681) internal successors, (95), 26 states have internal predecessors, (95), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:55,541 INFO L93 Difference]: Finished difference Result 1392 states and 1415 transitions. [2021-11-02 22:26:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-02 22:26:55,541 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 2.021276595744681) internal successors, (95), 26 states have internal predecessors, (95), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-02 22:26:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:55,546 INFO L225 Difference]: With dead ends: 1392 [2021-11-02 22:26:55,547 INFO L226 Difference]: Without dead ends: 1391 [2021-11-02 22:26:55,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2117, Invalid=5193, Unknown=0, NotChecked=0, Total=7310 [2021-11-02 22:26:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2021-11-02 22:26:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1345. [2021-11-02 22:26:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1146 states have (on average 1.0549738219895288) internal successors, (1209), 1140 states have internal predecessors, (1209), 25 states have call successors, (25), 24 states have call predecessors, (25), 171 states have return successors, (180), 180 states have call predecessors, (180), 24 states have call successors, (180) [2021-11-02 22:26:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1414 transitions. [2021-11-02 22:26:55,582 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1414 transitions. Word has length 118 [2021-11-02 22:26:55,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:55,583 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 1414 transitions. [2021-11-02 22:26:55,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 2.021276595744681) internal successors, (95), 26 states have internal predecessors, (95), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:55,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1414 transitions. [2021-11-02 22:26:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 22:26:55,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:55,586 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1, 1, 1, 1] [2021-11-02 22:26:55,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:55,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-02 22:26:55,813 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:55,814 INFO L85 PathProgramCache]: Analyzing trace with hash 824707317, now seen corresponding path program 23 times [2021-11-02 22:26:55,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:55,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332582033] [2021-11-02 22:26:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:55,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:56,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:56,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332582033] [2021-11-02 22:26:56,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332582033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:56,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019022230] [2021-11-02 22:26:56,653 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:26:56,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:56,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:56,654 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:56,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-02 22:26:57,347 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-02 22:26:57,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:57,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-02 22:26:57,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:57,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019022230] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:57,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:57,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-11-02 22:26:57,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182597104] [2021-11-02 22:26:57,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-02 22:26:57,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:57,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-02 22:26:57,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2021-11-02 22:26:57,741 INFO L87 Difference]: Start difference. First operand 1345 states and 1414 transitions. Second operand has 51 states, 49 states have (on average 2.020408163265306) internal successors, (99), 27 states have internal predecessors, (99), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:58,794 INFO L93 Difference]: Finished difference Result 1461 states and 1485 transitions. [2021-11-02 22:26:58,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-02 22:26:58,794 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 49 states have (on average 2.020408163265306) internal successors, (99), 27 states have internal predecessors, (99), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-02 22:26:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:58,801 INFO L225 Difference]: With dead ends: 1461 [2021-11-02 22:26:58,801 INFO L226 Difference]: Without dead ends: 1460 [2021-11-02 22:26:58,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2325, Invalid=5685, Unknown=0, NotChecked=0, Total=8010 [2021-11-02 22:26:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-02 22:26:58,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1412. [2021-11-02 22:26:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1203 states have (on average 1.054862842892768) internal successors, (1269), 1197 states have internal predecessors, (1269), 26 states have call successors, (26), 25 states have call predecessors, (26), 180 states have return successors, (189), 189 states have call predecessors, (189), 25 states have call successors, (189) [2021-11-02 22:26:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1484 transitions. [2021-11-02 22:26:58,837 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1484 transitions. Word has length 123 [2021-11-02 22:26:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:58,838 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 1484 transitions. [2021-11-02 22:26:58,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 49 states have (on average 2.020408163265306) internal successors, (99), 27 states have internal predecessors, (99), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1484 transitions. [2021-11-02 22:26:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:26:58,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:58,841 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:58,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:59,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:59,057 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:26:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:59,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1157210070, now seen corresponding path program 8 times [2021-11-02 22:26:59,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:59,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898958555] [2021-11-02 22:26:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:59,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:26:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:26:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-02 22:26:59,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:59,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898958555] [2021-11-02 22:26:59,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898958555] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:59,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732488349] [2021-11-02 22:26:59,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:26:59,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:59,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:59,389 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:59,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-02 22:27:00,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:27:00,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:00,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 22:27:00,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-02 22:27:00,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732488349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:00,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:00,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-11-02 22:27:00,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781273740] [2021-11-02 22:27:00,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:27:00,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:00,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:27:00,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:27:00,582 INFO L87 Difference]: Start difference. First operand 1412 states and 1484 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 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) [2021-11-02 22:27:00,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:00,648 INFO L93 Difference]: Finished difference Result 1610 states and 1730 transitions. [2021-11-02 22:27:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:27:00,649 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 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 111 [2021-11-02 22:27:00,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:00,656 INFO L225 Difference]: With dead ends: 1610 [2021-11-02 22:27:00,656 INFO L226 Difference]: Without dead ends: 1546 [2021-11-02 22:27:00,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 119 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:27:00,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-11-02 22:27:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1522. [2021-11-02 22:27:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1298 states have (on average 1.0500770416024654) internal successors, (1363), 1291 states have internal predecessors, (1363), 26 states have call successors, (26), 25 states have call predecessors, (26), 195 states have return successors, (205), 205 states have call predecessors, (205), 25 states have call successors, (205) [2021-11-02 22:27:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1594 transitions. [2021-11-02 22:27:00,697 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1594 transitions. Word has length 111 [2021-11-02 22:27:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:00,697 INFO L470 AbstractCegarLoop]: Abstraction has 1522 states and 1594 transitions. [2021-11-02 22:27:00,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 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) [2021-11-02 22:27:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1594 transitions. [2021-11-02 22:27:00,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 22:27:00,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:00,701 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1, 1, 1, 1] [2021-11-02 22:27:00,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:00,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:00,914 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:00,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:00,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1801921353, now seen corresponding path program 24 times [2021-11-02 22:27:00,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:00,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230039702] [2021-11-02 22:27:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:00,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:01,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:01,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230039702] [2021-11-02 22:27:01,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230039702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:01,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523727398] [2021-11-02 22:27:01,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:27:01,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:01,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:01,895 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:01,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-02 22:27:02,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-02 22:27:02,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:02,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-02 22:27:02,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:03,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523727398] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:03,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:03,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-11-02 22:27:03,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534209529] [2021-11-02 22:27:03,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-02 22:27:03,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:03,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-02 22:27:03,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2021-11-02 22:27:03,163 INFO L87 Difference]: Start difference. First operand 1522 states and 1594 transitions. Second operand has 53 states, 51 states have (on average 2.019607843137255) internal successors, (103), 28 states have internal predecessors, (103), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:04,433 INFO L93 Difference]: Finished difference Result 1647 states and 1672 transitions. [2021-11-02 22:27:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-02 22:27:04,434 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 2.019607843137255) internal successors, (103), 28 states have internal predecessors, (103), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-02 22:27:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:04,441 INFO L225 Difference]: With dead ends: 1647 [2021-11-02 22:27:04,442 INFO L226 Difference]: Without dead ends: 1646 [2021-11-02 22:27:04,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2468, Invalid=6088, Unknown=0, NotChecked=0, Total=8556 [2021-11-02 22:27:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-11-02 22:27:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1596. [2021-11-02 22:27:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1361 states have (on average 1.049963262307127) internal successors, (1429), 1354 states have internal predecessors, (1429), 27 states have call successors, (27), 26 states have call predecessors, (27), 205 states have return successors, (215), 215 states have call predecessors, (215), 26 states have call successors, (215) [2021-11-02 22:27:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 1671 transitions. [2021-11-02 22:27:04,492 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 1671 transitions. Word has length 128 [2021-11-02 22:27:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:04,493 INFO L470 AbstractCegarLoop]: Abstraction has 1596 states and 1671 transitions. [2021-11-02 22:27:04,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 2.019607843137255) internal successors, (103), 28 states have internal predecessors, (103), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 1671 transitions. [2021-11-02 22:27:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-02 22:27:04,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:04,497 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1, 1, 1, 1] [2021-11-02 22:27:04,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:04,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-02 22:27:04,721 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:04,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:04,722 INFO L85 PathProgramCache]: Analyzing trace with hash 817893941, now seen corresponding path program 25 times [2021-11-02 22:27:04,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:04,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190632184] [2021-11-02 22:27:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:04,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:05,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:05,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190632184] [2021-11-02 22:27:05,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190632184] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:05,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768499733] [2021-11-02 22:27:05,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:27:05,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:05,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:05,863 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:05,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-02 22:27:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:06,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:27:06,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:06,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768499733] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:06,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:06,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2021-11-02 22:27:06,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257184283] [2021-11-02 22:27:06,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-02 22:27:06,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-02 22:27:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2213, Unknown=0, NotChecked=0, Total=2970 [2021-11-02 22:27:06,940 INFO L87 Difference]: Start difference. First operand 1596 states and 1671 transitions. Second operand has 55 states, 53 states have (on average 2.018867924528302) internal successors, (107), 29 states have internal predecessors, (107), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:08,128 INFO L93 Difference]: Finished difference Result 1723 states and 1749 transitions. [2021-11-02 22:27:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-02 22:27:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 2.018867924528302) internal successors, (107), 29 states have internal predecessors, (107), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-02 22:27:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:08,134 INFO L225 Difference]: With dead ends: 1723 [2021-11-02 22:27:08,134 INFO L226 Difference]: Without dead ends: 1722 [2021-11-02 22:27:08,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2692, Invalid=6620, Unknown=0, NotChecked=0, Total=9312 [2021-11-02 22:27:08,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-11-02 22:27:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1670. [2021-11-02 22:27:08,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1424 states have (on average 1.0498595505617978) internal successors, (1495), 1417 states have internal predecessors, (1495), 28 states have call successors, (28), 27 states have call predecessors, (28), 215 states have return successors, (225), 225 states have call predecessors, (225), 27 states have call successors, (225) [2021-11-02 22:27:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 1748 transitions. [2021-11-02 22:27:08,178 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 1748 transitions. Word has length 133 [2021-11-02 22:27:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:08,179 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 1748 transitions. [2021-11-02 22:27:08,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 2.018867924528302) internal successors, (107), 29 states have internal predecessors, (107), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:08,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 1748 transitions. [2021-11-02 22:27:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 22:27:08,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:08,183 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1, 1, 1, 1] [2021-11-02 22:27:08,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:08,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-02 22:27:08,401 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1557437303, now seen corresponding path program 26 times [2021-11-02 22:27:08,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:08,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463829516] [2021-11-02 22:27:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:08,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:09,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:09,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463829516] [2021-11-02 22:27:09,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463829516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:09,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446176440] [2021-11-02 22:27:09,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:27:09,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:09,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:09,606 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:09,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-02 22:27:10,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:27:10,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:10,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-02 22:27:10,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:10,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446176440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:10,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:10,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2021-11-02 22:27:10,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785748351] [2021-11-02 22:27:10,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-02 22:27:10,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:10,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-02 22:27:10,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=2379, Unknown=0, NotChecked=0, Total=3192 [2021-11-02 22:27:10,938 INFO L87 Difference]: Start difference. First operand 1670 states and 1748 transitions. Second operand has 57 states, 55 states have (on average 2.018181818181818) internal successors, (111), 30 states have internal predecessors, (111), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:12,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:12,645 INFO L93 Difference]: Finished difference Result 1799 states and 1826 transitions. [2021-11-02 22:27:12,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-02 22:27:12,646 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 2.018181818181818) internal successors, (111), 30 states have internal predecessors, (111), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-02 22:27:12,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:12,655 INFO L225 Difference]: With dead ends: 1799 [2021-11-02 22:27:12,656 INFO L226 Difference]: Without dead ends: 1798 [2021-11-02 22:27:12,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2926, Invalid=7174, Unknown=0, NotChecked=0, Total=10100 [2021-11-02 22:27:12,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-11-02 22:27:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1744. [2021-11-02 22:27:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1487 states have (on average 1.0497646267652994) internal successors, (1561), 1480 states have internal predecessors, (1561), 29 states have call successors, (29), 28 states have call predecessors, (29), 225 states have return successors, (235), 235 states have call predecessors, (235), 28 states have call successors, (235) [2021-11-02 22:27:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 1825 transitions. [2021-11-02 22:27:12,715 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 1825 transitions. Word has length 138 [2021-11-02 22:27:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:12,716 INFO L470 AbstractCegarLoop]: Abstraction has 1744 states and 1825 transitions. [2021-11-02 22:27:12,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 2.018181818181818) internal successors, (111), 30 states have internal predecessors, (111), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 1825 transitions. [2021-11-02 22:27:12,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 22:27:12,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:12,720 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2021-11-02 22:27:12,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:12,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-02 22:27:12,945 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:12,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash -122539718, now seen corresponding path program 9 times [2021-11-02 22:27:12,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:12,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204269021] [2021-11-02 22:27:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:12,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:27:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-02 22:27:13,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:13,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204269021] [2021-11-02 22:27:13,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204269021] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:13,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858443719] [2021-11-02 22:27:13,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:27:13,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:13,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:13,379 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:13,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-02 22:27:14,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 22:27:14,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:14,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 22:27:14,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-02 22:27:15,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858443719] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:15,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:15,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-11-02 22:27:15,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203316767] [2021-11-02 22:27:15,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:27:15,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:27:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:27:15,052 INFO L87 Difference]: Start difference. First operand 1744 states and 1825 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-02 22:27:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:15,175 INFO L93 Difference]: Finished difference Result 1966 states and 2101 transitions. [2021-11-02 22:27:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:27:15,175 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 123 [2021-11-02 22:27:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:15,183 INFO L225 Difference]: With dead ends: 1966 [2021-11-02 22:27:15,183 INFO L226 Difference]: Without dead ends: 1895 [2021-11-02 22:27:15,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 132 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:27:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2021-11-02 22:27:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1868. [2021-11-02 22:27:15,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1594 states have (on average 1.0457967377666249) internal successors, (1667), 1586 states have internal predecessors, (1667), 29 states have call successors, (29), 28 states have call predecessors, (29), 242 states have return successors, (253), 253 states have call predecessors, (253), 28 states have call successors, (253) [2021-11-02 22:27:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 1949 transitions. [2021-11-02 22:27:15,229 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 1949 transitions. Word has length 123 [2021-11-02 22:27:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:15,230 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 1949 transitions. [2021-11-02 22:27:15,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-02 22:27:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 1949 transitions. [2021-11-02 22:27:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-02 22:27:15,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:15,234 INFO L513 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1, 1, 1, 1] [2021-11-02 22:27:15,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:15,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:15,449 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash -707949707, now seen corresponding path program 27 times [2021-11-02 22:27:15,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:15,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138150150] [2021-11-02 22:27:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:15,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:16,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:16,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138150150] [2021-11-02 22:27:16,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138150150] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:16,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798187182] [2021-11-02 22:27:16,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:27:16,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:16,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:16,870 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:16,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-02 22:27:17,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-02 22:27:17,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:17,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-02 22:27:17,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:18,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798187182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:18,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:18,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2021-11-02 22:27:18,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531801943] [2021-11-02 22:27:18,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-02 22:27:18,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-02 22:27:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=871, Invalid=2551, Unknown=0, NotChecked=0, Total=3422 [2021-11-02 22:27:18,471 INFO L87 Difference]: Start difference. First operand 1868 states and 1949 transitions. Second operand has 59 states, 57 states have (on average 2.017543859649123) internal successors, (115), 31 states have internal predecessors, (115), 28 states have call successors, (28), 28 states have call predecessors, (28), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:20,049 INFO L93 Difference]: Finished difference Result 2006 states and 2034 transitions. [2021-11-02 22:27:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-11-02 22:27:20,050 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 57 states have (on average 2.017543859649123) internal successors, (115), 31 states have internal predecessors, (115), 28 states have call successors, (28), 28 states have call predecessors, (28), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-02 22:27:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:20,057 INFO L225 Difference]: With dead ends: 2006 [2021-11-02 22:27:20,057 INFO L226 Difference]: Without dead ends: 2005 [2021-11-02 22:27:20,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3086, Invalid=7626, Unknown=0, NotChecked=0, Total=10712 [2021-11-02 22:27:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2021-11-02 22:27:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1949. [2021-11-02 22:27:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1663 states have (on average 1.0457005411906193) internal successors, (1739), 1655 states have internal predecessors, (1739), 30 states have call successors, (30), 29 states have call predecessors, (30), 253 states have return successors, (264), 264 states have call predecessors, (264), 29 states have call successors, (264) [2021-11-02 22:27:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2033 transitions. [2021-11-02 22:27:20,104 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2033 transitions. Word has length 143 [2021-11-02 22:27:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:20,105 INFO L470 AbstractCegarLoop]: Abstraction has 1949 states and 2033 transitions. [2021-11-02 22:27:20,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 57 states have (on average 2.017543859649123) internal successors, (115), 31 states have internal predecessors, (115), 28 states have call successors, (28), 28 states have call predecessors, (28), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2033 transitions. [2021-11-02 22:27:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-02 22:27:20,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:20,110 INFO L513 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1, 1, 1, 1] [2021-11-02 22:27:20,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:20,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-02 22:27:20,333 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:20,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1082070473, now seen corresponding path program 28 times [2021-11-02 22:27:20,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:20,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139614554] [2021-11-02 22:27:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:20,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:21,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:21,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139614554] [2021-11-02 22:27:21,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139614554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:21,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172099467] [2021-11-02 22:27:21,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:27:21,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:21,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:21,805 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:21,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-02 22:27:22,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:27:22,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:22,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-02 22:27:22,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:23,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172099467] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:23,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:23,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2021-11-02 22:27:23,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434355114] [2021-11-02 22:27:23,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-02 22:27:23,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:23,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-02 22:27:23,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=931, Invalid=2729, Unknown=0, NotChecked=0, Total=3660 [2021-11-02 22:27:23,482 INFO L87 Difference]: Start difference. First operand 1949 states and 2033 transitions. Second operand has 61 states, 59 states have (on average 2.016949152542373) internal successors, (119), 32 states have internal predecessors, (119), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:25,163 INFO L93 Difference]: Finished difference Result 2089 states and 2118 transitions. [2021-11-02 22:27:25,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-02 22:27:25,164 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 59 states have (on average 2.016949152542373) internal successors, (119), 32 states have internal predecessors, (119), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-02 22:27:25,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:25,173 INFO L225 Difference]: With dead ends: 2089 [2021-11-02 22:27:25,174 INFO L226 Difference]: Without dead ends: 2088 [2021-11-02 22:27:25,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3336, Invalid=8220, Unknown=0, NotChecked=0, Total=11556 [2021-11-02 22:27:25,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2021-11-02 22:27:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2030. [2021-11-02 22:27:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 1732 states have (on average 1.0456120092378753) internal successors, (1811), 1724 states have internal predecessors, (1811), 31 states have call successors, (31), 30 states have call predecessors, (31), 264 states have return successors, (275), 275 states have call predecessors, (275), 30 states have call successors, (275) [2021-11-02 22:27:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2117 transitions. [2021-11-02 22:27:25,261 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2117 transitions. Word has length 148 [2021-11-02 22:27:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:25,262 INFO L470 AbstractCegarLoop]: Abstraction has 2030 states and 2117 transitions. [2021-11-02 22:27:25,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 59 states have (on average 2.016949152542373) internal successors, (119), 32 states have internal predecessors, (119), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2117 transitions. [2021-11-02 22:27:25,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-02 22:27:25,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:25,265 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-11-02 22:27:25,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:25,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:25,466 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:25,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:25,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1973780778, now seen corresponding path program 10 times [2021-11-02 22:27:25,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:25,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986915027] [2021-11-02 22:27:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:25,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:27:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-02 22:27:25,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:25,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986915027] [2021-11-02 22:27:25,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986915027] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:25,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787109920] [2021-11-02 22:27:25,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:27:25,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:25,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:25,907 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:25,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-02 22:27:27,084 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:27:27,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:27,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 22:27:27,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-02 22:27:27,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787109920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:27,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:27,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-11-02 22:27:27,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462219532] [2021-11-02 22:27:27,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 22:27:27,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:27,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 22:27:27,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:27:27,517 INFO L87 Difference]: Start difference. First operand 2030 states and 2117 transitions. Second operand has 26 states, 25 states have (on average 3.12) internal successors, (78), 26 states have internal predecessors, (78), 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) [2021-11-02 22:27:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:27,599 INFO L93 Difference]: Finished difference Result 2268 states and 2413 transitions. [2021-11-02 22:27:27,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:27:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.12) internal successors, (78), 26 states have internal predecessors, (78), 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 135 [2021-11-02 22:27:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:27,618 INFO L225 Difference]: With dead ends: 2268 [2021-11-02 22:27:27,618 INFO L226 Difference]: Without dead ends: 2190 [2021-11-02 22:27:27,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 145 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:27:27,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2021-11-02 22:27:27,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 2161. [2021-11-02 22:27:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 1845 states have (on average 1.0422764227642276) internal successors, (1923), 1836 states have internal predecessors, (1923), 31 states have call successors, (31), 30 states have call predecessors, (31), 282 states have return successors, (294), 294 states have call predecessors, (294), 30 states have call successors, (294) [2021-11-02 22:27:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 2248 transitions. [2021-11-02 22:27:27,661 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 2248 transitions. Word has length 135 [2021-11-02 22:27:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:27,661 INFO L470 AbstractCegarLoop]: Abstraction has 2161 states and 2248 transitions. [2021-11-02 22:27:27,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.12) internal successors, (78), 26 states have internal predecessors, (78), 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) [2021-11-02 22:27:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 2248 transitions. [2021-11-02 22:27:27,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-02 22:27:27,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:27,665 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1, 1, 1, 1] [2021-11-02 22:27:27,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:27,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:27,881 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:27,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1606126411, now seen corresponding path program 29 times [2021-11-02 22:27:27,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:27,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024937489] [2021-11-02 22:27:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:27,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:29,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:29,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024937489] [2021-11-02 22:27:29,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024937489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:29,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037131251] [2021-11-02 22:27:29,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:27:29,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:29,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:29,229 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:29,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-02 22:27:30,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-02 22:27:30,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:30,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-02 22:27:30,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:30,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037131251] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:30,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:30,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2021-11-02 22:27:30,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127747543] [2021-11-02 22:27:30,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-02 22:27:30,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-02 22:27:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=993, Invalid=2913, Unknown=0, NotChecked=0, Total=3906 [2021-11-02 22:27:30,756 INFO L87 Difference]: Start difference. First operand 2161 states and 2248 transitions. Second operand has 63 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 33 states have internal predecessors, (123), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:32,243 INFO L93 Difference]: Finished difference Result 2310 states and 2340 transitions. [2021-11-02 22:27:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-02 22:27:32,244 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 33 states have internal predecessors, (123), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-02 22:27:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:32,251 INFO L225 Difference]: With dead ends: 2310 [2021-11-02 22:27:32,252 INFO L226 Difference]: Without dead ends: 2309 [2021-11-02 22:27:32,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3507, Invalid=8703, Unknown=0, NotChecked=0, Total=12210 [2021-11-02 22:27:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2021-11-02 22:27:32,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2249. [2021-11-02 22:27:32,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 1920 states have (on average 1.0421875) internal successors, (2001), 1911 states have internal predecessors, (2001), 32 states have call successors, (32), 31 states have call predecessors, (32), 294 states have return successors, (306), 306 states have call predecessors, (306), 31 states have call successors, (306) [2021-11-02 22:27:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2339 transitions. [2021-11-02 22:27:32,301 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2339 transitions. Word has length 153 [2021-11-02 22:27:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:32,303 INFO L470 AbstractCegarLoop]: Abstraction has 2249 states and 2339 transitions. [2021-11-02 22:27:32,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 33 states have internal predecessors, (123), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:32,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2339 transitions. [2021-11-02 22:27:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-02 22:27:32,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:32,307 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1, 1] [2021-11-02 22:27:32,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:32,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:32,533 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash 355059959, now seen corresponding path program 30 times [2021-11-02 22:27:32,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:32,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946662503] [2021-11-02 22:27:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:32,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:34,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:34,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946662503] [2021-11-02 22:27:34,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946662503] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:34,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197841200] [2021-11-02 22:27:34,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:27:34,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:34,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:34,180 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:34,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-02 22:27:35,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-02 22:27:35,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:35,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-02 22:27:35,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:35,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197841200] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:35,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:35,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2021-11-02 22:27:35,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835977587] [2021-11-02 22:27:35,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-02 22:27:35,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:35,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-02 22:27:35,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1057, Invalid=3103, Unknown=0, NotChecked=0, Total=4160 [2021-11-02 22:27:35,802 INFO L87 Difference]: Start difference. First operand 2249 states and 2339 transitions. Second operand has 65 states, 63 states have (on average 2.015873015873016) internal successors, (127), 34 states have internal predecessors, (127), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:37,417 INFO L93 Difference]: Finished difference Result 2400 states and 2431 transitions. [2021-11-02 22:27:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-02 22:27:37,417 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 63 states have (on average 2.015873015873016) internal successors, (127), 34 states have internal predecessors, (127), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-02 22:27:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:37,422 INFO L225 Difference]: With dead ends: 2400 [2021-11-02 22:27:37,423 INFO L226 Difference]: Without dead ends: 2399 [2021-11-02 22:27:37,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3773, Invalid=9337, Unknown=0, NotChecked=0, Total=13110 [2021-11-02 22:27:37,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-11-02 22:27:37,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2337. [2021-11-02 22:27:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 1995 states have (on average 1.0421052631578946) internal successors, (2079), 1986 states have internal predecessors, (2079), 33 states have call successors, (33), 32 states have call predecessors, (33), 306 states have return successors, (318), 318 states have call predecessors, (318), 32 states have call successors, (318) [2021-11-02 22:27:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 2430 transitions. [2021-11-02 22:27:37,471 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 2430 transitions. Word has length 158 [2021-11-02 22:27:37,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:37,472 INFO L470 AbstractCegarLoop]: Abstraction has 2337 states and 2430 transitions. [2021-11-02 22:27:37,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 63 states have (on average 2.015873015873016) internal successors, (127), 34 states have internal predecessors, (127), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 2430 transitions. [2021-11-02 22:27:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-02 22:27:37,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:37,476 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 1, 1, 1, 1, 1] [2021-11-02 22:27:37,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:37,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:37,689 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:37,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:37,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1357328907, now seen corresponding path program 31 times [2021-11-02 22:27:37,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:37,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641809572] [2021-11-02 22:27:37,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:37,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 0 proven. 2449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:39,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:39,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641809572] [2021-11-02 22:27:39,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641809572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:39,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888223597] [2021-11-02 22:27:39,196 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:27:39,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:39,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:39,197 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:39,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-02 22:27:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:40,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-02 22:27:40,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 0 proven. 2449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:40,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888223597] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:40,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:40,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2021-11-02 22:27:40,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435923098] [2021-11-02 22:27:40,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-02 22:27:40,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:40,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-02 22:27:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1123, Invalid=3299, Unknown=0, NotChecked=0, Total=4422 [2021-11-02 22:27:40,930 INFO L87 Difference]: Start difference. First operand 2337 states and 2430 transitions. Second operand has 67 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 35 states have internal predecessors, (131), 32 states have call successors, (32), 32 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:42,766 INFO L93 Difference]: Finished difference Result 2490 states and 2522 transitions. [2021-11-02 22:27:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-02 22:27:42,767 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 35 states have internal predecessors, (131), 32 states have call successors, (32), 32 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-02 22:27:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:42,772 INFO L225 Difference]: With dead ends: 2490 [2021-11-02 22:27:42,772 INFO L226 Difference]: Without dead ends: 2489 [2021-11-02 22:27:42,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2457 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4049, Invalid=9993, Unknown=0, NotChecked=0, Total=14042 [2021-11-02 22:27:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2021-11-02 22:27:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2425. [2021-11-02 22:27:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 2070 states have (on average 1.0420289855072464) internal successors, (2157), 2061 states have internal predecessors, (2157), 34 states have call successors, (34), 33 states have call predecessors, (34), 318 states have return successors, (330), 330 states have call predecessors, (330), 33 states have call successors, (330) [2021-11-02 22:27:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2521 transitions. [2021-11-02 22:27:42,819 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2521 transitions. Word has length 163 [2021-11-02 22:27:42,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:42,819 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 2521 transitions. [2021-11-02 22:27:42,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 35 states have internal predecessors, (131), 32 states have call successors, (32), 32 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2521 transitions. [2021-11-02 22:27:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-02 22:27:42,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:42,824 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2021-11-02 22:27:42,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:43,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-02 22:27:43,037 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:43,038 INFO L85 PathProgramCache]: Analyzing trace with hash 888821306, now seen corresponding path program 11 times [2021-11-02 22:27:43,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:43,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115197360] [2021-11-02 22:27:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:43,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:27:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:27:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-02 22:27:43,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:43,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115197360] [2021-11-02 22:27:43,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115197360] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:43,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849708873] [2021-11-02 22:27:43,529 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:27:43,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:43,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:43,530 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:43,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-02 22:27:44,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-11-02 22:27:44,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:44,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-02 22:27:44,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-02 22:27:45,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849708873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:45,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:45,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-11-02 22:27:45,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910791800] [2021-11-02 22:27:45,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:27:45,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:45,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:27:45,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:27:45,282 INFO L87 Difference]: Start difference. First operand 2425 states and 2521 transitions. Second operand has 28 states, 27 states have (on average 3.111111111111111) internal successors, (84), 28 states have internal predecessors, (84), 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) [2021-11-02 22:27:45,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:45,441 INFO L93 Difference]: Finished difference Result 2687 states and 2847 transitions. [2021-11-02 22:27:45,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:27:45,442 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.111111111111111) internal successors, (84), 28 states have internal predecessors, (84), 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 147 [2021-11-02 22:27:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:45,449 INFO L225 Difference]: With dead ends: 2687 [2021-11-02 22:27:45,449 INFO L226 Difference]: Without dead ends: 2602 [2021-11-02 22:27:45,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 158 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:27:45,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-02 22:27:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2570. [2021-11-02 22:27:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2195 states have (on average 1.0391799544419134) internal successors, (2281), 2185 states have internal predecessors, (2281), 34 states have call successors, (34), 33 states have call predecessors, (34), 338 states have return successors, (351), 351 states have call predecessors, (351), 33 states have call successors, (351) [2021-11-02 22:27:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 2666 transitions. [2021-11-02 22:27:45,503 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 2666 transitions. Word has length 147 [2021-11-02 22:27:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:45,504 INFO L470 AbstractCegarLoop]: Abstraction has 2570 states and 2666 transitions. [2021-11-02 22:27:45,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.111111111111111) internal successors, (84), 28 states have internal predecessors, (84), 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) [2021-11-02 22:27:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 2666 transitions. [2021-11-02 22:27:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-02 22:27:45,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:45,508 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 1, 1, 1, 1, 1] [2021-11-02 22:27:45,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:45,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-02 22:27:45,733 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:45,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2002466743, now seen corresponding path program 32 times [2021-11-02 22:27:45,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:45,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156047420] [2021-11-02 22:27:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:45,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:47,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:47,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156047420] [2021-11-02 22:27:47,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156047420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:47,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682879589] [2021-11-02 22:27:47,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:27:47,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:47,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:47,531 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:47,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-02 22:27:48,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:27:48,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:48,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-02 22:27:48,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:49,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682879589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:49,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:49,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2021-11-02 22:27:49,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828788413] [2021-11-02 22:27:49,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-11-02 22:27:49,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-11-02 22:27:49,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=3501, Unknown=0, NotChecked=0, Total=4692 [2021-11-02 22:27:49,475 INFO L87 Difference]: Start difference. First operand 2570 states and 2666 transitions. Second operand has 69 states, 67 states have (on average 2.014925373134328) internal successors, (135), 36 states have internal predecessors, (135), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:51,506 INFO L93 Difference]: Finished difference Result 2732 states and 2765 transitions. [2021-11-02 22:27:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-02 22:27:51,507 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 67 states have (on average 2.014925373134328) internal successors, (135), 36 states have internal predecessors, (135), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-11-02 22:27:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:51,515 INFO L225 Difference]: With dead ends: 2732 [2021-11-02 22:27:51,516 INFO L226 Difference]: Without dead ends: 2731 [2021-11-02 22:27:51,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2572 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4237, Invalid=10525, Unknown=0, NotChecked=0, Total=14762 [2021-11-02 22:27:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2021-11-02 22:27:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2665. [2021-11-02 22:27:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2276 states have (on average 1.039103690685413) internal successors, (2365), 2266 states have internal predecessors, (2365), 35 states have call successors, (35), 34 states have call predecessors, (35), 351 states have return successors, (364), 364 states have call predecessors, (364), 34 states have call successors, (364) [2021-11-02 22:27:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 2764 transitions. [2021-11-02 22:27:51,573 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 2764 transitions. Word has length 168 [2021-11-02 22:27:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:51,574 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 2764 transitions. [2021-11-02 22:27:51,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 67 states have (on average 2.014925373134328) internal successors, (135), 36 states have internal predecessors, (135), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 2764 transitions. [2021-11-02 22:27:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-02 22:27:51,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:51,578 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 1, 1, 1, 1, 1] [2021-11-02 22:27:51,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:51,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-02 22:27:51,805 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash 4101941, now seen corresponding path program 33 times [2021-11-02 22:27:51,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:51,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609645617] [2021-11-02 22:27:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:51,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 0 proven. 2772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:53,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:53,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609645617] [2021-11-02 22:27:53,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609645617] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:53,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960187885] [2021-11-02 22:27:53,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:27:53,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:53,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:53,649 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:53,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-02 22:27:55,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-02 22:27:55,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:55,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-02 22:27:55,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 0 proven. 2772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:55,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960187885] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:55,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:55,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2021-11-02 22:27:55,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128414541] [2021-11-02 22:27:55,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-02 22:27:55,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-02 22:27:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1261, Invalid=3709, Unknown=0, NotChecked=0, Total=4970 [2021-11-02 22:27:55,827 INFO L87 Difference]: Start difference. First operand 2665 states and 2764 transitions. Second operand has 71 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 37 states have internal predecessors, (139), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:57,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:57,943 INFO L93 Difference]: Finished difference Result 2829 states and 2863 transitions. [2021-11-02 22:27:57,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-11-02 22:27:57,944 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 37 states have internal predecessors, (139), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-11-02 22:27:57,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:57,963 INFO L225 Difference]: With dead ends: 2829 [2021-11-02 22:27:57,963 INFO L226 Difference]: Without dead ends: 2828 [2021-11-02 22:27:57,965 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2763 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4529, Invalid=11221, Unknown=0, NotChecked=0, Total=15750 [2021-11-02 22:27:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-11-02 22:27:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2760. [2021-11-02 22:27:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 2357 states have (on average 1.0390326686465847) internal successors, (2449), 2347 states have internal predecessors, (2449), 36 states have call successors, (36), 35 states have call predecessors, (36), 364 states have return successors, (377), 377 states have call predecessors, (377), 35 states have call successors, (377) [2021-11-02 22:27:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 2862 transitions. [2021-11-02 22:27:58,021 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 2862 transitions. Word has length 173 [2021-11-02 22:27:58,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:58,022 INFO L470 AbstractCegarLoop]: Abstraction has 2760 states and 2862 transitions. [2021-11-02 22:27:58,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 37 states have internal predecessors, (139), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 2862 transitions. [2021-11-02 22:27:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-02 22:27:58,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:58,027 INFO L513 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 1, 1, 1, 1, 1] [2021-11-02 22:27:58,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:58,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:58,253 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:27:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2136918409, now seen corresponding path program 34 times [2021-11-02 22:27:58,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:58,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213298831] [2021-11-02 22:27:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:58,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 0 proven. 2941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:00,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:00,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213298831] [2021-11-02 22:28:00,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213298831] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:00,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727106956] [2021-11-02 22:28:00,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:28:00,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:00,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:00,325 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:00,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-02 22:28:01,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:28:01,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:01,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-02 22:28:01,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 0 proven. 2941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:02,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727106956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:02,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:02,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2021-11-02 22:28:02,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792676099] [2021-11-02 22:28:02,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-11-02 22:28:02,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-11-02 22:28:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1333, Invalid=3923, Unknown=0, NotChecked=0, Total=5256 [2021-11-02 22:28:02,452 INFO L87 Difference]: Start difference. First operand 2760 states and 2862 transitions. Second operand has 73 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 38 states have internal predecessors, (143), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:05,039 INFO L93 Difference]: Finished difference Result 2926 states and 2961 transitions. [2021-11-02 22:28:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-02 22:28:05,040 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 38 states have internal predecessors, (143), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-11-02 22:28:05,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:05,051 INFO L225 Difference]: With dead ends: 2926 [2021-11-02 22:28:05,051 INFO L226 Difference]: Without dead ends: 2925 [2021-11-02 22:28:05,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2961 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4831, Invalid=11939, Unknown=0, NotChecked=0, Total=16770 [2021-11-02 22:28:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2021-11-02 22:28:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 2855. [2021-11-02 22:28:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2855 states, 2438 states have (on average 1.038966365873667) internal successors, (2533), 2428 states have internal predecessors, (2533), 37 states have call successors, (37), 36 states have call predecessors, (37), 377 states have return successors, (390), 390 states have call predecessors, (390), 36 states have call successors, (390) [2021-11-02 22:28:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 2960 transitions. [2021-11-02 22:28:05,112 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 2960 transitions. Word has length 178 [2021-11-02 22:28:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:05,113 INFO L470 AbstractCegarLoop]: Abstraction has 2855 states and 2960 transitions. [2021-11-02 22:28:05,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 38 states have internal predecessors, (143), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 2960 transitions. [2021-11-02 22:28:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-02 22:28:05,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:05,117 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2021-11-02 22:28:05,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:05,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-02 22:28:05,340 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:05,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash -596696534, now seen corresponding path program 12 times [2021-11-02 22:28:05,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:05,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784623414] [2021-11-02 22:28:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:05,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:28:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2021-11-02 22:28:05,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:05,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784623414] [2021-11-02 22:28:05,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784623414] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:05,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384398806] [2021-11-02 22:28:05,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:28:05,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:05,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:05,937 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:05,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-02 22:28:07,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-11-02 22:28:07,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:07,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-02 22:28:07,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2021-11-02 22:28:08,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384398806] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:08,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:08,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-11-02 22:28:08,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951023355] [2021-11-02 22:28:08,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-02 22:28:08,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-02 22:28:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-11-02 22:28:08,344 INFO L87 Difference]: Start difference. First operand 2855 states and 2960 transitions. Second operand has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-02 22:28:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:08,464 INFO L93 Difference]: Finished difference Result 3141 states and 3316 transitions. [2021-11-02 22:28:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:28:08,465 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) Word has length 159 [2021-11-02 22:28:08,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:08,471 INFO L225 Difference]: With dead ends: 3141 [2021-11-02 22:28:08,472 INFO L226 Difference]: Without dead ends: 3049 [2021-11-02 22:28:08,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 171 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-11-02 22:28:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-11-02 22:28:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3014. [2021-11-02 22:28:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 2575 states have (on average 1.0365048543689321) internal successors, (2669), 2564 states have internal predecessors, (2669), 37 states have call successors, (37), 36 states have call predecessors, (37), 399 states have return successors, (413), 413 states have call predecessors, (413), 36 states have call successors, (413) [2021-11-02 22:28:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 3119 transitions. [2021-11-02 22:28:08,551 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 3119 transitions. Word has length 159 [2021-11-02 22:28:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:08,551 INFO L470 AbstractCegarLoop]: Abstraction has 3014 states and 3119 transitions. [2021-11-02 22:28:08,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-02 22:28:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 3119 transitions. [2021-11-02 22:28:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-02 22:28:08,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:08,557 INFO L513 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 1, 1, 1, 1, 1] [2021-11-02 22:28:08,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:08,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-02 22:28:08,777 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1331048331, now seen corresponding path program 35 times [2021-11-02 22:28:08,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:08,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961312117] [2021-11-02 22:28:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:08,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3115 backedges. 0 proven. 3115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:10,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:10,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961312117] [2021-11-02 22:28:10,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961312117] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:10,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172359915] [2021-11-02 22:28:10,984 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:28:10,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:10,985 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:10,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-02 22:28:12,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-02 22:28:12,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:12,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-02 22:28:12,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:13,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3115 backedges. 0 proven. 3115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:13,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172359915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:13,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:13,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2021-11-02 22:28:13,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165143525] [2021-11-02 22:28:13,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-11-02 22:28:13,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-11-02 22:28:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1407, Invalid=4143, Unknown=0, NotChecked=0, Total=5550 [2021-11-02 22:28:13,050 INFO L87 Difference]: Start difference. First operand 3014 states and 3119 transitions. Second operand has 75 states, 73 states have (on average 2.0136986301369864) internal successors, (147), 39 states have internal predecessors, (147), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:15,212 INFO L93 Difference]: Finished difference Result 3189 states and 3225 transitions. [2021-11-02 22:28:15,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-02 22:28:15,212 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 73 states have (on average 2.0136986301369864) internal successors, (147), 39 states have internal predecessors, (147), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2021-11-02 22:28:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:15,220 INFO L225 Difference]: With dead ends: 3189 [2021-11-02 22:28:15,221 INFO L226 Difference]: Without dead ends: 3188 [2021-11-02 22:28:15,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5036, Invalid=12520, Unknown=0, NotChecked=0, Total=17556 [2021-11-02 22:28:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2021-11-02 22:28:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 3116. [2021-11-02 22:28:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 2662 states have (on average 1.0364387678437266) internal successors, (2759), 2651 states have internal predecessors, (2759), 38 states have call successors, (38), 37 states have call predecessors, (38), 413 states have return successors, (427), 427 states have call predecessors, (427), 37 states have call successors, (427) [2021-11-02 22:28:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 3224 transitions. [2021-11-02 22:28:15,289 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 3224 transitions. Word has length 183 [2021-11-02 22:28:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:15,289 INFO L470 AbstractCegarLoop]: Abstraction has 3116 states and 3224 transitions. [2021-11-02 22:28:15,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 73 states have (on average 2.0136986301369864) internal successors, (147), 39 states have internal predecessors, (147), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 3224 transitions. [2021-11-02 22:28:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-02 22:28:15,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:15,294 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 1, 1, 1, 1, 1] [2021-11-02 22:28:15,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:15,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:15,509 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:15,510 INFO L85 PathProgramCache]: Analyzing trace with hash 210224439, now seen corresponding path program 36 times [2021-11-02 22:28:15,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:15,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370088381] [2021-11-02 22:28:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:15,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 3294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:17,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:17,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370088381] [2021-11-02 22:28:17,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370088381] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:17,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105162809] [2021-11-02 22:28:17,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:28:17,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:17,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:17,522 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:17,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-02 22:28:19,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-02 22:28:19,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:19,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-02 22:28:19,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 3294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:19,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105162809] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:19,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:19,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2021-11-02 22:28:19,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195464177] [2021-11-02 22:28:19,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-11-02 22:28:19,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:19,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-11-02 22:28:19,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1483, Invalid=4369, Unknown=0, NotChecked=0, Total=5852 [2021-11-02 22:28:19,964 INFO L87 Difference]: Start difference. First operand 3116 states and 3224 transitions. Second operand has 77 states, 75 states have (on average 2.013333333333333) internal successors, (151), 40 states have internal predecessors, (151), 37 states have call successors, (37), 37 states have call predecessors, (37), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:22,386 INFO L93 Difference]: Finished difference Result 3293 states and 3330 transitions. [2021-11-02 22:28:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-02 22:28:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 75 states have (on average 2.013333333333333) internal successors, (151), 40 states have internal predecessors, (151), 37 states have call successors, (37), 37 states have call predecessors, (37), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-02 22:28:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:22,393 INFO L225 Difference]: With dead ends: 3293 [2021-11-02 22:28:22,393 INFO L226 Difference]: Without dead ends: 3292 [2021-11-02 22:28:22,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3296 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5354, Invalid=13278, Unknown=0, NotChecked=0, Total=18632 [2021-11-02 22:28:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-11-02 22:28:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3218. [2021-11-02 22:28:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 2749 states have (on average 1.036376864314296) internal successors, (2849), 2738 states have internal predecessors, (2849), 39 states have call successors, (39), 38 states have call predecessors, (39), 427 states have return successors, (441), 441 states have call predecessors, (441), 38 states have call successors, (441) [2021-11-02 22:28:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 3329 transitions. [2021-11-02 22:28:22,457 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 3329 transitions. Word has length 188 [2021-11-02 22:28:22,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:22,458 INFO L470 AbstractCegarLoop]: Abstraction has 3218 states and 3329 transitions. [2021-11-02 22:28:22,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 75 states have (on average 2.013333333333333) internal successors, (151), 40 states have internal predecessors, (151), 37 states have call successors, (37), 37 states have call predecessors, (37), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:22,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 3329 transitions. [2021-11-02 22:28:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-02 22:28:22,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:22,463 INFO L513 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 1, 1, 1, 1, 1] [2021-11-02 22:28:22,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:22,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-02 22:28:22,689 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1011775925, now seen corresponding path program 37 times [2021-11-02 22:28:22,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:22,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215476472] [2021-11-02 22:28:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:22,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 0 proven. 3478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:24,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:24,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215476472] [2021-11-02 22:28:24,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215476472] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:24,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15735989] [2021-11-02 22:28:24,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:28:24,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:24,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:24,915 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:24,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-02 22:28:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:26,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-02 22:28:26,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 0 proven. 3478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:27,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15735989] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:27,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:27,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2021-11-02 22:28:27,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821272062] [2021-11-02 22:28:27,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-11-02 22:28:27,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-11-02 22:28:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1561, Invalid=4601, Unknown=0, NotChecked=0, Total=6162 [2021-11-02 22:28:27,445 INFO L87 Difference]: Start difference. First operand 3218 states and 3329 transitions. Second operand has 79 states, 77 states have (on average 2.012987012987013) internal successors, (155), 41 states have internal predecessors, (155), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:29,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:29,925 INFO L93 Difference]: Finished difference Result 3397 states and 3435 transitions. [2021-11-02 22:28:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-02 22:28:29,926 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 77 states have (on average 2.012987012987013) internal successors, (155), 41 states have internal predecessors, (155), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-11-02 22:28:29,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:29,933 INFO L225 Difference]: With dead ends: 3397 [2021-11-02 22:28:29,933 INFO L226 Difference]: Without dead ends: 3396 [2021-11-02 22:28:29,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3512 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5682, Invalid=14058, Unknown=0, NotChecked=0, Total=19740 [2021-11-02 22:28:29,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2021-11-02 22:28:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3320. [2021-11-02 22:28:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 2836 states have (on average 1.0363187588152327) internal successors, (2939), 2825 states have internal predecessors, (2939), 40 states have call successors, (40), 39 states have call predecessors, (40), 441 states have return successors, (455), 455 states have call predecessors, (455), 39 states have call successors, (455) [2021-11-02 22:28:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 3434 transitions. [2021-11-02 22:28:30,003 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 3434 transitions. Word has length 193 [2021-11-02 22:28:30,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:30,003 INFO L470 AbstractCegarLoop]: Abstraction has 3320 states and 3434 transitions. [2021-11-02 22:28:30,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 77 states have (on average 2.012987012987013) internal successors, (155), 41 states have internal predecessors, (155), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 3434 transitions. [2021-11-02 22:28:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-02 22:28:30,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:30,008 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2021-11-02 22:28:30,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:30,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:30,221 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash -587859142, now seen corresponding path program 13 times [2021-11-02 22:28:30,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:30,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805560007] [2021-11-02 22:28:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:30,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:28:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-02 22:28:30,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:30,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805560007] [2021-11-02 22:28:30,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805560007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:30,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762990338] [2021-11-02 22:28:30,865 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:28:30,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:30,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:30,869 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:30,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-02 22:28:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:32,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 22:28:32,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-02 22:28:33,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762990338] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:33,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:33,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-11-02 22:28:33,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320256105] [2021-11-02 22:28:33,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:28:33,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:33,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:28:33,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:28:33,136 INFO L87 Difference]: Start difference. First operand 3320 states and 3434 transitions. Second operand has 32 states, 31 states have (on average 3.096774193548387) internal successors, (96), 32 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-02 22:28:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:33,255 INFO L93 Difference]: Finished difference Result 3630 states and 3820 transitions. [2021-11-02 22:28:33,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:28:33,256 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.096774193548387) internal successors, (96), 32 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 171 [2021-11-02 22:28:33,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:33,263 INFO L225 Difference]: With dead ends: 3630 [2021-11-02 22:28:33,263 INFO L226 Difference]: Without dead ends: 3531 [2021-11-02 22:28:33,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 184 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:28:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2021-11-02 22:28:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3493. [2021-11-02 22:28:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2985 states have (on average 1.0341708542713568) internal successors, (3087), 2973 states have internal predecessors, (3087), 40 states have call successors, (40), 39 states have call predecessors, (40), 465 states have return successors, (480), 480 states have call predecessors, (480), 39 states have call successors, (480) [2021-11-02 22:28:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 3607 transitions. [2021-11-02 22:28:33,329 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 3607 transitions. Word has length 171 [2021-11-02 22:28:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:33,329 INFO L470 AbstractCegarLoop]: Abstraction has 3493 states and 3607 transitions. [2021-11-02 22:28:33,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.096774193548387) internal successors, (96), 32 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-02 22:28:33,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 3607 transitions. [2021-11-02 22:28:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-02 22:28:33,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:33,334 INFO L513 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 1, 1, 1, 1, 1] [2021-11-02 22:28:33,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:33,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-11-02 22:28:33,561 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:33,562 INFO L85 PathProgramCache]: Analyzing trace with hash -140844041, now seen corresponding path program 38 times [2021-11-02 22:28:33,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:33,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712913025] [2021-11-02 22:28:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:33,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3667 backedges. 0 proven. 3667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:35,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:35,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712913025] [2021-11-02 22:28:35,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712913025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:35,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424714887] [2021-11-02 22:28:35,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:28:35,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:35,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:35,674 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:35,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-02 22:28:37,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:28:37,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:37,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-02 22:28:37,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3667 backedges. 0 proven. 3667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:37,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424714887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:37,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:37,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2021-11-02 22:28:37,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291880379] [2021-11-02 22:28:37,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-11-02 22:28:37,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:37,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-11-02 22:28:37,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1641, Invalid=4839, Unknown=0, NotChecked=0, Total=6480 [2021-11-02 22:28:37,869 INFO L87 Difference]: Start difference. First operand 3493 states and 3607 transitions. Second operand has 81 states, 79 states have (on average 2.0126582278481013) internal successors, (159), 42 states have internal predecessors, (159), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:40,229 INFO L93 Difference]: Finished difference Result 3681 states and 3720 transitions. [2021-11-02 22:28:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-11-02 22:28:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 79 states have (on average 2.0126582278481013) internal successors, (159), 42 states have internal predecessors, (159), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2021-11-02 22:28:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:40,235 INFO L225 Difference]: With dead ends: 3681 [2021-11-02 22:28:40,236 INFO L226 Difference]: Without dead ends: 3680 [2021-11-02 22:28:40,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3649 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5904, Invalid=14688, Unknown=0, NotChecked=0, Total=20592 [2021-11-02 22:28:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2021-11-02 22:28:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3602. [2021-11-02 22:28:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3602 states, 3078 states have (on average 1.03411306042885) internal successors, (3183), 3066 states have internal predecessors, (3183), 41 states have call successors, (41), 40 states have call predecessors, (41), 480 states have return successors, (495), 495 states have call predecessors, (495), 40 states have call successors, (495) [2021-11-02 22:28:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3602 states to 3602 states and 3719 transitions. [2021-11-02 22:28:40,290 INFO L78 Accepts]: Start accepts. Automaton has 3602 states and 3719 transitions. Word has length 198 [2021-11-02 22:28:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:40,290 INFO L470 AbstractCegarLoop]: Abstraction has 3602 states and 3719 transitions. [2021-11-02 22:28:40,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 79 states have (on average 2.0126582278481013) internal successors, (159), 42 states have internal predecessors, (159), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3602 states and 3719 transitions. [2021-11-02 22:28:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-02 22:28:40,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:40,295 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 1, 1, 1, 1, 1] [2021-11-02 22:28:40,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:40,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-02 22:28:40,517 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:40,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:40,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1105161483, now seen corresponding path program 39 times [2021-11-02 22:28:40,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:40,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38152493] [2021-11-02 22:28:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:40,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 0 proven. 3861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:42,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:42,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38152493] [2021-11-02 22:28:42,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38152493] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:42,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100232806] [2021-11-02 22:28:42,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:28:42,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:42,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:42,449 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:42,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-02 22:28:44,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-02 22:28:44,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:44,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-02 22:28:44,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 0 proven. 3861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:44,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100232806] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:44,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:44,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2021-11-02 22:28:44,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946454523] [2021-11-02 22:28:44,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-11-02 22:28:44,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-11-02 22:28:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1723, Invalid=5083, Unknown=0, NotChecked=0, Total=6806 [2021-11-02 22:28:44,883 INFO L87 Difference]: Start difference. First operand 3602 states and 3719 transitions. Second operand has 83 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 43 states have internal predecessors, (163), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:47,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:47,397 INFO L93 Difference]: Finished difference Result 3792 states and 3832 transitions. [2021-11-02 22:28:47,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:28:47,398 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 43 states have internal predecessors, (163), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-11-02 22:28:47,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:47,403 INFO L225 Difference]: With dead ends: 3792 [2021-11-02 22:28:47,403 INFO L226 Difference]: Without dead ends: 3791 [2021-11-02 22:28:47,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3876 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6248, Invalid=15508, Unknown=0, NotChecked=0, Total=21756 [2021-11-02 22:28:47,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2021-11-02 22:28:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3711. [2021-11-02 22:28:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 3171 states have (on average 1.0340586565752128) internal successors, (3279), 3159 states have internal predecessors, (3279), 42 states have call successors, (42), 41 states have call predecessors, (42), 495 states have return successors, (510), 510 states have call predecessors, (510), 41 states have call successors, (510) [2021-11-02 22:28:47,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 3831 transitions. [2021-11-02 22:28:47,466 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 3831 transitions. Word has length 203 [2021-11-02 22:28:47,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:47,467 INFO L470 AbstractCegarLoop]: Abstraction has 3711 states and 3831 transitions. [2021-11-02 22:28:47,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 43 states have internal predecessors, (163), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 3831 transitions. [2021-11-02 22:28:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-02 22:28:47,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:47,472 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2021-11-02 22:28:47,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:47,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:47,685 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:47,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:47,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2118337322, now seen corresponding path program 14 times [2021-11-02 22:28:47,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:47,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613794948] [2021-11-02 22:28:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:47,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:28:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:47,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:47,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:28:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-02 22:28:48,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:48,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613794948] [2021-11-02 22:28:48,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613794948] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:48,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801053031] [2021-11-02 22:28:48,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:28:48,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:48,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:48,461 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:48,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-02 22:28:50,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:28:50,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:50,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-02 22:28:50,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-02 22:28:51,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801053031] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:51,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:51,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-11-02 22:28:51,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387481865] [2021-11-02 22:28:51,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:28:51,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:28:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:28:51,067 INFO L87 Difference]: Start difference. First operand 3711 states and 3831 transitions. Second operand has 34 states, 33 states have (on average 3.090909090909091) internal successors, (102), 34 states have internal predecessors, (102), 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) [2021-11-02 22:28:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:51,180 INFO L93 Difference]: Finished difference Result 4037 states and 4237 transitions. [2021-11-02 22:28:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 22:28:51,180 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.090909090909091) internal successors, (102), 34 states have internal predecessors, (102), 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 183 [2021-11-02 22:28:51,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:51,191 INFO L225 Difference]: With dead ends: 4037 [2021-11-02 22:28:51,192 INFO L226 Difference]: Without dead ends: 3931 [2021-11-02 22:28:51,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 197 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:28:51,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-02 22:28:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3891. [2021-11-02 22:28:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3891 states, 3326 states have (on average 1.0321707757065544) internal successors, (3433), 3313 states have internal predecessors, (3433), 42 states have call successors, (42), 41 states have call predecessors, (42), 520 states have return successors, (536), 536 states have call predecessors, (536), 41 states have call successors, (536) [2021-11-02 22:28:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 4011 transitions. [2021-11-02 22:28:51,257 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 4011 transitions. Word has length 183 [2021-11-02 22:28:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:51,258 INFO L470 AbstractCegarLoop]: Abstraction has 3891 states and 4011 transitions. [2021-11-02 22:28:51,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.090909090909091) internal successors, (102), 34 states have internal predecessors, (102), 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) [2021-11-02 22:28:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 4011 transitions. [2021-11-02 22:28:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-02 22:28:51,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:51,265 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 1, 1, 1, 1, 1] [2021-11-02 22:28:51,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:51,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:51,489 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:51,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash -546925897, now seen corresponding path program 40 times [2021-11-02 22:28:51,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:51,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868145210] [2021-11-02 22:28:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:51,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4060 backedges. 0 proven. 4060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:53,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:53,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868145210] [2021-11-02 22:28:53,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868145210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:53,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354064322] [2021-11-02 22:28:53,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:28:53,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:53,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:53,603 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:53,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-02 22:28:55,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:28:55,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:55,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-02 22:28:55,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4060 backedges. 0 proven. 4060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:56,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354064322] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:56,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:56,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2021-11-02 22:28:56,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321138142] [2021-11-02 22:28:56,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-11-02 22:28:56,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:56,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-11-02 22:28:56,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1807, Invalid=5333, Unknown=0, NotChecked=0, Total=7140 [2021-11-02 22:28:56,140 INFO L87 Difference]: Start difference. First operand 3891 states and 4011 transitions. Second operand has 85 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 44 states have internal predecessors, (167), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:58,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:58,828 INFO L93 Difference]: Finished difference Result 4090 states and 4131 transitions. [2021-11-02 22:28:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-11-02 22:28:58,829 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 44 states have internal predecessors, (167), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2021-11-02 22:28:58,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:58,836 INFO L225 Difference]: With dead ends: 4090 [2021-11-02 22:28:58,837 INFO L226 Difference]: Without dead ends: 4089 [2021-11-02 22:28:58,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4020 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6481, Invalid=16169, Unknown=0, NotChecked=0, Total=22650 [2021-11-02 22:28:58,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2021-11-02 22:28:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 4007. [2021-11-02 22:28:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 3425 states have (on average 1.032116788321168) internal successors, (3535), 3412 states have internal predecessors, (3535), 43 states have call successors, (43), 42 states have call predecessors, (43), 536 states have return successors, (552), 552 states have call predecessors, (552), 42 states have call successors, (552) [2021-11-02 22:28:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 4130 transitions. [2021-11-02 22:28:58,913 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 4130 transitions. Word has length 208 [2021-11-02 22:28:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:58,914 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 4130 transitions. [2021-11-02 22:28:58,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 44 states have internal predecessors, (167), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 4130 transitions. [2021-11-02 22:28:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-02 22:28:58,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:58,919 INFO L513 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 1, 1, 1, 1, 1] [2021-11-02 22:28:58,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:59,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-02 22:28:59,145 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:28:59,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:59,146 INFO L85 PathProgramCache]: Analyzing trace with hash 806624309, now seen corresponding path program 41 times [2021-11-02 22:28:59,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:59,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713328009] [2021-11-02 22:28:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:59,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 4264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:01,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:01,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713328009] [2021-11-02 22:29:01,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713328009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:01,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620957628] [2021-11-02 22:29:01,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:29:01,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:01,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:01,357 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:01,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-02 22:29:03,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-02 22:29:03,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:03,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-02 22:29:03,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 4264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:03,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620957628] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:03,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:03,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2021-11-02 22:29:03,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805158157] [2021-11-02 22:29:03,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-11-02 22:29:03,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-11-02 22:29:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=5589, Unknown=0, NotChecked=0, Total=7482 [2021-11-02 22:29:03,887 INFO L87 Difference]: Start difference. First operand 4007 states and 4130 transitions. Second operand has 87 states, 85 states have (on average 2.011764705882353) internal successors, (171), 45 states have internal predecessors, (171), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:06,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:06,390 INFO L93 Difference]: Finished difference Result 4208 states and 4250 transitions. [2021-11-02 22:29:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-11-02 22:29:06,390 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 85 states have (on average 2.011764705882353) internal successors, (171), 45 states have internal predecessors, (171), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-02 22:29:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:06,395 INFO L225 Difference]: With dead ends: 4208 [2021-11-02 22:29:06,395 INFO L226 Difference]: Without dead ends: 4207 [2021-11-02 22:29:06,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4258 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6841, Invalid=17029, Unknown=0, NotChecked=0, Total=23870 [2021-11-02 22:29:06,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-11-02 22:29:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4123. [2021-11-02 22:29:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4123 states, 3524 states have (on average 1.0320658342792282) internal successors, (3637), 3511 states have internal predecessors, (3637), 44 states have call successors, (44), 43 states have call predecessors, (44), 552 states have return successors, (568), 568 states have call predecessors, (568), 43 states have call successors, (568) [2021-11-02 22:29:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4123 states to 4123 states and 4249 transitions. [2021-11-02 22:29:06,443 INFO L78 Accepts]: Start accepts. Automaton has 4123 states and 4249 transitions. Word has length 213 [2021-11-02 22:29:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:06,443 INFO L470 AbstractCegarLoop]: Abstraction has 4123 states and 4249 transitions. [2021-11-02 22:29:06,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 85 states have (on average 2.011764705882353) internal successors, (171), 45 states have internal predecessors, (171), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4123 states and 4249 transitions. [2021-11-02 22:29:06,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-02 22:29:06,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:06,449 INFO L513 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 1, 1, 1, 1, 1] [2021-11-02 22:29:06,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-11-02 22:29:06,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-02 22:29:06,661 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:29:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash -495529609, now seen corresponding path program 42 times [2021-11-02 22:29:06,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:06,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106773421] [2021-11-02 22:29:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:06,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4473 backedges. 0 proven. 4473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:08,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:08,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106773421] [2021-11-02 22:29:08,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106773421] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:08,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092437367] [2021-11-02 22:29:08,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:29:08,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:08,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:08,998 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:08,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-02 22:29:11,214 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-02 22:29:11,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:11,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-02 22:29:11,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4473 backedges. 0 proven. 4473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:11,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092437367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:11,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:11,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2021-11-02 22:29:11,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635263665] [2021-11-02 22:29:11,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-11-02 22:29:11,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:11,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-11-02 22:29:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1981, Invalid=5851, Unknown=0, NotChecked=0, Total=7832 [2021-11-02 22:29:11,821 INFO L87 Difference]: Start difference. First operand 4123 states and 4249 transitions. Second operand has 89 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 46 states have internal predecessors, (175), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:14,919 INFO L93 Difference]: Finished difference Result 4326 states and 4369 transitions. [2021-11-02 22:29:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-02 22:29:14,920 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 46 states have internal predecessors, (175), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2021-11-02 22:29:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:14,928 INFO L225 Difference]: With dead ends: 4326 [2021-11-02 22:29:14,928 INFO L226 Difference]: Without dead ends: 4325 [2021-11-02 22:29:14,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4503 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=7211, Invalid=17911, Unknown=0, NotChecked=0, Total=25122 [2021-11-02 22:29:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2021-11-02 22:29:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4239. [2021-11-02 22:29:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 3623 states have (on average 1.0320176649185757) internal successors, (3739), 3610 states have internal predecessors, (3739), 45 states have call successors, (45), 44 states have call predecessors, (45), 568 states have return successors, (584), 584 states have call predecessors, (584), 44 states have call successors, (584) [2021-11-02 22:29:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 4368 transitions. [2021-11-02 22:29:15,004 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 4368 transitions. Word has length 218 [2021-11-02 22:29:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:15,005 INFO L470 AbstractCegarLoop]: Abstraction has 4239 states and 4368 transitions. [2021-11-02 22:29:15,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 46 states have internal predecessors, (175), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:15,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 4368 transitions. [2021-11-02 22:29:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-02 22:29:15,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:15,011 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:15,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:15,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-02 22:29:15,233 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:29:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:15,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1002774586, now seen corresponding path program 15 times [2021-11-02 22:29:15,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:15,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995191875] [2021-11-02 22:29:15,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:15,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:29:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:16,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:16,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2021-11-02 22:29:16,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:16,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995191875] [2021-11-02 22:29:16,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995191875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:16,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144932755] [2021-11-02 22:29:16,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:29:16,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:16,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:16,231 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:16,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-02 22:29:18,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-02 22:29:18,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:18,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:29:18,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2021-11-02 22:29:19,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144932755] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:19,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:19,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-11-02 22:29:19,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436881584] [2021-11-02 22:29:19,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-02 22:29:19,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-02 22:29:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:29:19,306 INFO L87 Difference]: Start difference. First operand 4239 states and 4368 transitions. Second operand has 36 states, 35 states have (on average 3.085714285714286) internal successors, (108), 36 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-02 22:29:19,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:19,440 INFO L93 Difference]: Finished difference Result 4589 states and 4804 transitions. [2021-11-02 22:29:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-02 22:29:19,441 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.085714285714286) internal successors, (108), 36 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) Word has length 195 [2021-11-02 22:29:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:19,448 INFO L225 Difference]: With dead ends: 4589 [2021-11-02 22:29:19,448 INFO L226 Difference]: Without dead ends: 4476 [2021-11-02 22:29:19,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 210 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:29:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2021-11-02 22:29:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4433. [2021-11-02 22:29:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4433 states, 3790 states have (on average 1.0303430079155673) internal successors, (3905), 3776 states have internal predecessors, (3905), 45 states have call successors, (45), 44 states have call predecessors, (45), 595 states have return successors, (612), 612 states have call predecessors, (612), 44 states have call successors, (612) [2021-11-02 22:29:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 4562 transitions. [2021-11-02 22:29:19,509 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 4562 transitions. Word has length 195 [2021-11-02 22:29:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:19,509 INFO L470 AbstractCegarLoop]: Abstraction has 4433 states and 4562 transitions. [2021-11-02 22:29:19,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.085714285714286) internal successors, (108), 36 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-02 22:29:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 4562 transitions. [2021-11-02 22:29:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-02 22:29:19,514 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:19,515 INFO L513 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 1, 1, 1, 1, 1] [2021-11-02 22:29:19,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-11-02 22:29:19,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:19,720 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:29:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:19,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1424157323, now seen corresponding path program 43 times [2021-11-02 22:29:19,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:19,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123989930] [2021-11-02 22:29:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:19,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4687 backedges. 0 proven. 4687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:22,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:22,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123989930] [2021-11-02 22:29:22,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123989930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:22,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916919667] [2021-11-02 22:29:22,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:29:22,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:22,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:22,244 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:22,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-02 22:29:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:24,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-02 22:29:24,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4687 backedges. 0 proven. 4687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:25,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916919667] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:25,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:25,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2021-11-02 22:29:25,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39287946] [2021-11-02 22:29:25,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-11-02 22:29:25,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:25,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-11-02 22:29:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2071, Invalid=6119, Unknown=0, NotChecked=0, Total=8190 [2021-11-02 22:29:25,412 INFO L87 Difference]: Start difference. First operand 4433 states and 4562 transitions. Second operand has 91 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 47 states have internal predecessors, (179), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:28,390 INFO L93 Difference]: Finished difference Result 4645 states and 4689 transitions. [2021-11-02 22:29:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-11-02 22:29:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 47 states have internal predecessors, (179), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2021-11-02 22:29:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:28,401 INFO L225 Difference]: With dead ends: 4645 [2021-11-02 22:29:28,401 INFO L226 Difference]: Without dead ends: 4644 [2021-11-02 22:29:28,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4658 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=7461, Invalid=18621, Unknown=0, NotChecked=0, Total=26082 [2021-11-02 22:29:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-11-02 22:29:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 4556. [2021-11-02 22:29:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 3895 states have (on average 1.0302952503209242) internal successors, (4013), 3881 states have internal predecessors, (4013), 46 states have call successors, (46), 45 states have call predecessors, (46), 612 states have return successors, (629), 629 states have call predecessors, (629), 45 states have call successors, (629) [2021-11-02 22:29:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 4688 transitions. [2021-11-02 22:29:28,480 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 4688 transitions. Word has length 223 [2021-11-02 22:29:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:28,481 INFO L470 AbstractCegarLoop]: Abstraction has 4556 states and 4688 transitions. [2021-11-02 22:29:28,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 47 states have internal predecessors, (179), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 4688 transitions. [2021-11-02 22:29:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-02 22:29:28,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:28,512 INFO L513 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 1, 1, 1, 1, 1] [2021-11-02 22:29:28,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:28,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:28,713 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:29:28,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1616355383, now seen corresponding path program 44 times [2021-11-02 22:29:28,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:28,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324686450] [2021-11-02 22:29:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:28,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 4906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:31,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:31,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324686450] [2021-11-02 22:29:31,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324686450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:31,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255403838] [2021-11-02 22:29:31,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:31,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:31,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:31,250 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:31,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-02 22:29:33,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:29:33,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:33,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-02 22:29:33,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 4906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:34,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255403838] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:34,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:34,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2021-11-02 22:29:34,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252792116] [2021-11-02 22:29:34,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-11-02 22:29:34,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-11-02 22:29:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2163, Invalid=6393, Unknown=0, NotChecked=0, Total=8556 [2021-11-02 22:29:34,306 INFO L87 Difference]: Start difference. First operand 4556 states and 4688 transitions. Second operand has 93 states, 91 states have (on average 2.010989010989011) internal successors, (183), 48 states have internal predecessors, (183), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:37,557 INFO L93 Difference]: Finished difference Result 4770 states and 4815 transitions. [2021-11-02 22:29:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-11-02 22:29:37,558 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 91 states have (on average 2.010989010989011) internal successors, (183), 48 states have internal predecessors, (183), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2021-11-02 22:29:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:37,564 INFO L225 Difference]: With dead ends: 4770 [2021-11-02 22:29:37,564 INFO L226 Difference]: Without dead ends: 4769 [2021-11-02 22:29:37,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4914 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=7847, Invalid=19543, Unknown=0, NotChecked=0, Total=27390 [2021-11-02 22:29:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2021-11-02 22:29:37,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 4679. [2021-11-02 22:29:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4679 states, 4000 states have (on average 1.03025) internal successors, (4121), 3986 states have internal predecessors, (4121), 47 states have call successors, (47), 46 states have call predecessors, (47), 629 states have return successors, (646), 646 states have call predecessors, (646), 46 states have call successors, (646) [2021-11-02 22:29:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4679 states to 4679 states and 4814 transitions. [2021-11-02 22:29:37,627 INFO L78 Accepts]: Start accepts. Automaton has 4679 states and 4814 transitions. Word has length 228 [2021-11-02 22:29:37,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:37,628 INFO L470 AbstractCegarLoop]: Abstraction has 4679 states and 4814 transitions. [2021-11-02 22:29:37,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 91 states have (on average 2.010989010989011) internal successors, (183), 48 states have internal predecessors, (183), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:37,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4679 states and 4814 transitions. [2021-11-02 22:29:37,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-02 22:29:37,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:37,634 INFO L513 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 1, 1, 1, 1, 1] [2021-11-02 22:29:37,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:37,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:37,849 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:29:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1490059595, now seen corresponding path program 45 times [2021-11-02 22:29:37,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:37,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47450685] [2021-11-02 22:29:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:37,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:40,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:40,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47450685] [2021-11-02 22:29:40,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47450685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:40,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185920949] [2021-11-02 22:29:40,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:29:40,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:40,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:40,553 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:40,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-02 22:29:42,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-02 22:29:42,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:42,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-02 22:29:42,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:43,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185920949] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:43,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:43,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2021-11-02 22:29:43,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839912650] [2021-11-02 22:29:43,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-11-02 22:29:43,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:43,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-11-02 22:29:43,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2257, Invalid=6673, Unknown=0, NotChecked=0, Total=8930 [2021-11-02 22:29:43,648 INFO L87 Difference]: Start difference. First operand 4679 states and 4814 transitions. Second operand has 95 states, 93 states have (on average 2.010752688172043) internal successors, (187), 49 states have internal predecessors, (187), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:46,820 INFO L93 Difference]: Finished difference Result 4895 states and 4941 transitions. [2021-11-02 22:29:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-02 22:29:46,820 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 93 states have (on average 2.010752688172043) internal successors, (187), 49 states have internal predecessors, (187), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-02 22:29:46,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:46,826 INFO L225 Difference]: With dead ends: 4895 [2021-11-02 22:29:46,826 INFO L226 Difference]: Without dead ends: 4894 [2021-11-02 22:29:46,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5177 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8243, Invalid=20487, Unknown=0, NotChecked=0, Total=28730 [2021-11-02 22:29:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2021-11-02 22:29:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4802. [2021-11-02 22:29:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4802 states, 4105 states have (on average 1.0302070645554202) internal successors, (4229), 4091 states have internal predecessors, (4229), 48 states have call successors, (48), 47 states have call predecessors, (48), 646 states have return successors, (663), 663 states have call predecessors, (663), 47 states have call successors, (663) [2021-11-02 22:29:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 4940 transitions. [2021-11-02 22:29:46,898 INFO L78 Accepts]: Start accepts. Automaton has 4802 states and 4940 transitions. Word has length 233 [2021-11-02 22:29:46,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:46,899 INFO L470 AbstractCegarLoop]: Abstraction has 4802 states and 4940 transitions. [2021-11-02 22:29:46,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 93 states have (on average 2.010752688172043) internal successors, (187), 49 states have internal predecessors, (187), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4802 states and 4940 transitions. [2021-11-02 22:29:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-02 22:29:46,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:46,905 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:46,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-11-02 22:29:47,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:47,129 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:29:47,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:47,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1576934358, now seen corresponding path program 16 times [2021-11-02 22:29:47,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:47,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984949842] [2021-11-02 22:29:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:47,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:29:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:29:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2021-11-02 22:29:47,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:47,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984949842] [2021-11-02 22:29:47,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984949842] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:47,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999810979] [2021-11-02 22:29:47,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:29:47,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:47,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:47,868 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:47,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-02 22:29:50,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:29:50,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:50,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 22:29:50,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2021-11-02 22:29:50,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999810979] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:50,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:50,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-11-02 22:29:50,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751978207] [2021-11-02 22:29:50,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-02 22:29:50,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:50,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-02 22:29:50,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:29:50,910 INFO L87 Difference]: Start difference. First operand 4802 states and 4940 transitions. Second operand has 38 states, 37 states have (on average 3.081081081081081) internal successors, (114), 38 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-02 22:29:51,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:51,027 INFO L93 Difference]: Finished difference Result 5176 states and 5406 transitions. [2021-11-02 22:29:51,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-02 22:29:51,027 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.081081081081081) internal successors, (114), 38 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) Word has length 207 [2021-11-02 22:29:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:51,033 INFO L225 Difference]: With dead ends: 5176 [2021-11-02 22:29:51,033 INFO L226 Difference]: Without dead ends: 5056 [2021-11-02 22:29:51,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 223 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:29:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2021-11-02 22:29:51,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5010. [2021-11-02 22:29:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 4284 states have (on average 1.0287114845938374) internal successors, (4407), 4269 states have internal predecessors, (4407), 48 states have call successors, (48), 47 states have call predecessors, (48), 675 states have return successors, (693), 693 states have call predecessors, (693), 47 states have call successors, (693) [2021-11-02 22:29:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 5148 transitions. [2021-11-02 22:29:51,092 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 5148 transitions. Word has length 207 [2021-11-02 22:29:51,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:51,092 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 5148 transitions. [2021-11-02 22:29:51,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.081081081081081) internal successors, (114), 38 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-02 22:29:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 5148 transitions. [2021-11-02 22:29:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-02 22:29:51,097 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:51,098 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1] [2021-11-02 22:29:51,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-11-02 22:29:51,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:51,313 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:29:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1181417737, now seen corresponding path program 46 times [2021-11-02 22:29:51,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:51,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311609426] [2021-11-02 22:29:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:51,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:53,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:53,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311609426] [2021-11-02 22:29:53,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311609426] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:53,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106675670] [2021-11-02 22:29:53,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:29:53,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:53,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:53,998 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:53,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-02 22:29:56,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:29:56,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:56,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-02 22:29:56,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:57,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106675670] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:57,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:57,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2021-11-02 22:29:57,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899861363] [2021-11-02 22:29:57,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-02 22:29:57,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:57,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-02 22:29:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2353, Invalid=6959, Unknown=0, NotChecked=0, Total=9312 [2021-11-02 22:29:57,110 INFO L87 Difference]: Start difference. First operand 5010 states and 5148 transitions. Second operand has 97 states, 95 states have (on average 2.0105263157894737) internal successors, (191), 50 states have internal predecessors, (191), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:00,555 INFO L93 Difference]: Finished difference Result 5235 states and 5282 transitions. [2021-11-02 22:30:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-02 22:30:00,555 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 95 states have (on average 2.0105263157894737) internal successors, (191), 50 states have internal predecessors, (191), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-02 22:30:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:00,560 INFO L225 Difference]: With dead ends: 5235 [2021-11-02 22:30:00,561 INFO L226 Difference]: Without dead ends: 5234 [2021-11-02 22:30:00,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5343 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8510, Invalid=21246, Unknown=0, NotChecked=0, Total=29756 [2021-11-02 22:30:00,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2021-11-02 22:30:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 5140. [2021-11-02 22:30:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5140 states, 4395 states have (on average 1.028668941979522) internal successors, (4521), 4380 states have internal predecessors, (4521), 49 states have call successors, (49), 48 states have call predecessors, (49), 693 states have return successors, (711), 711 states have call predecessors, (711), 48 states have call successors, (711) [2021-11-02 22:30:00,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5140 states to 5140 states and 5281 transitions. [2021-11-02 22:30:00,615 INFO L78 Accepts]: Start accepts. Automaton has 5140 states and 5281 transitions. Word has length 238 [2021-11-02 22:30:00,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:00,615 INFO L470 AbstractCegarLoop]: Abstraction has 5140 states and 5281 transitions. [2021-11-02 22:30:00,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 95 states have (on average 2.0105263157894737) internal successors, (191), 50 states have internal predecessors, (191), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:00,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5140 states and 5281 transitions. [2021-11-02 22:30:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-02 22:30:00,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:00,620 INFO L513 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 1, 1, 1, 1, 1] [2021-11-02 22:30:00,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-11-02 22:30:00,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:00,821 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:30:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash 994007029, now seen corresponding path program 47 times [2021-11-02 22:30:00,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:00,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277148186] [2021-11-02 22:30:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:00,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5593 backedges. 0 proven. 5593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:03,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:03,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277148186] [2021-11-02 22:30:03,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277148186] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:03,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422669201] [2021-11-02 22:30:03,574 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:30:03,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:03,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:03,575 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:03,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-02 22:30:06,443 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-02 22:30:06,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:06,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-02 22:30:06,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5593 backedges. 0 proven. 5593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:07,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422669201] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:07,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:07,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2021-11-02 22:30:07,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181354976] [2021-11-02 22:30:07,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-11-02 22:30:07,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-11-02 22:30:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2451, Invalid=7251, Unknown=0, NotChecked=0, Total=9702 [2021-11-02 22:30:07,192 INFO L87 Difference]: Start difference. First operand 5140 states and 5281 transitions. Second operand has 99 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 51 states have internal predecessors, (195), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:11,240 INFO L93 Difference]: Finished difference Result 5367 states and 5415 transitions. [2021-11-02 22:30:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-11-02 22:30:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 51 states have internal predecessors, (195), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2021-11-02 22:30:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:11,248 INFO L225 Difference]: With dead ends: 5367 [2021-11-02 22:30:11,248 INFO L226 Difference]: Without dead ends: 5366 [2021-11-02 22:30:11,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5617 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8922, Invalid=22230, Unknown=0, NotChecked=0, Total=31152 [2021-11-02 22:30:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5366 states. [2021-11-02 22:30:11,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5366 to 5270. [2021-11-02 22:30:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 4506 states have (on average 1.0286284953395473) internal successors, (4635), 4491 states have internal predecessors, (4635), 50 states have call successors, (50), 49 states have call predecessors, (50), 711 states have return successors, (729), 729 states have call predecessors, (729), 49 states have call successors, (729) [2021-11-02 22:30:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 5414 transitions. [2021-11-02 22:30:11,310 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 5414 transitions. Word has length 243 [2021-11-02 22:30:11,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:11,311 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 5414 transitions. [2021-11-02 22:30:11,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 51 states have internal predecessors, (195), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 5414 transitions. [2021-11-02 22:30:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-02 22:30:11,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:11,316 INFO L513 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 1, 1, 1, 1, 1] [2021-11-02 22:30:11,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-11-02 22:30:11,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-11-02 22:30:11,517 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:30:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash 263908791, now seen corresponding path program 48 times [2021-11-02 22:30:11,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:11,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828047135] [2021-11-02 22:30:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:11,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:14,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:14,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828047135] [2021-11-02 22:30:14,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828047135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:14,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015721708] [2021-11-02 22:30:14,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:30:14,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:14,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:14,952 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:14,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-02 22:30:17,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-02 22:30:17,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:17,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-02 22:30:17,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:18,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015721708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:18,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:18,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2021-11-02 22:30:18,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859235299] [2021-11-02 22:30:18,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-02 22:30:18,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-02 22:30:18,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2551, Invalid=7549, Unknown=0, NotChecked=0, Total=10100 [2021-11-02 22:30:18,780 INFO L87 Difference]: Start difference. First operand 5270 states and 5414 transitions. Second operand has 101 states, 99 states have (on average 2.01010101010101) internal successors, (199), 52 states have internal predecessors, (199), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:23,189 INFO L93 Difference]: Finished difference Result 5499 states and 5548 transitions. [2021-11-02 22:30:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-11-02 22:30:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 99 states have (on average 2.01010101010101) internal successors, (199), 52 states have internal predecessors, (199), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2021-11-02 22:30:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:23,197 INFO L225 Difference]: With dead ends: 5499 [2021-11-02 22:30:23,197 INFO L226 Difference]: Without dead ends: 5498 [2021-11-02 22:30:23,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5898 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9344, Invalid=23236, Unknown=0, NotChecked=0, Total=32580 [2021-11-02 22:30:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2021-11-02 22:30:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 5400. [2021-11-02 22:30:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 4617 states have (on average 1.0285899935022742) internal successors, (4749), 4602 states have internal predecessors, (4749), 51 states have call successors, (51), 50 states have call predecessors, (51), 729 states have return successors, (747), 747 states have call predecessors, (747), 50 states have call successors, (747) [2021-11-02 22:30:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 5547 transitions. [2021-11-02 22:30:23,261 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 5547 transitions. Word has length 248 [2021-11-02 22:30:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:23,262 INFO L470 AbstractCegarLoop]: Abstraction has 5400 states and 5547 transitions. [2021-11-02 22:30:23,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 99 states have (on average 2.01010101010101) internal successors, (199), 52 states have internal predecessors, (199), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 5547 transitions. [2021-11-02 22:30:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-02 22:30:23,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:23,269 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:23,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:23,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-02 22:30:23,481 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:30:23,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:23,482 INFO L85 PathProgramCache]: Analyzing trace with hash -460864198, now seen corresponding path program 17 times [2021-11-02 22:30:23,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:23,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103420536] [2021-11-02 22:30:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:23,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:30:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2021-11-02 22:30:24,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:24,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103420536] [2021-11-02 22:30:24,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103420536] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:24,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262571798] [2021-11-02 22:30:24,407 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:30:24,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:24,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:24,408 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:24,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-02 22:30:27,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-11-02 22:30:27,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:27,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-02 22:30:27,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2021-11-02 22:30:28,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262571798] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:28,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:28,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-11-02 22:30:28,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247856253] [2021-11-02 22:30:28,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 22:30:28,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 22:30:28,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:30:28,531 INFO L87 Difference]: Start difference. First operand 5400 states and 5547 transitions. Second operand has 40 states, 39 states have (on average 3.076923076923077) internal successors, (120), 40 states have internal predecessors, (120), 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) [2021-11-02 22:30:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:28,690 INFO L93 Difference]: Finished difference Result 5798 states and 6043 transitions. [2021-11-02 22:30:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-02 22:30:28,690 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.076923076923077) internal successors, (120), 40 states have internal predecessors, (120), 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 219 [2021-11-02 22:30:28,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:28,698 INFO L225 Difference]: With dead ends: 5798 [2021-11-02 22:30:28,698 INFO L226 Difference]: Without dead ends: 5671 [2021-11-02 22:30:28,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 236 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:30:28,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2021-11-02 22:30:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 5622. [2021-11-02 22:30:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 4808 states have (on average 1.0272462562396008) internal successors, (4939), 4792 states have internal predecessors, (4939), 51 states have call successors, (51), 50 states have call predecessors, (51), 760 states have return successors, (779), 779 states have call predecessors, (779), 50 states have call successors, (779) [2021-11-02 22:30:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 5769 transitions. [2021-11-02 22:30:28,765 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 5769 transitions. Word has length 219 [2021-11-02 22:30:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:28,766 INFO L470 AbstractCegarLoop]: Abstraction has 5622 states and 5769 transitions. [2021-11-02 22:30:28,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.076923076923077) internal successors, (120), 40 states have internal predecessors, (120), 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) [2021-11-02 22:30:28,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 5769 transitions. [2021-11-02 22:30:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-02 22:30:28,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:28,771 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 1, 1, 1, 1, 1] [2021-11-02 22:30:28,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:28,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-02 22:30:28,971 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:30:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:28,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1564516661, now seen corresponding path program 49 times [2021-11-02 22:30:28,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:28,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596549737] [2021-11-02 22:30:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:28,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6076 backedges. 0 proven. 6076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:32,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:32,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596549737] [2021-11-02 22:30:32,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596549737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:32,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722407964] [2021-11-02 22:30:32,395 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:30:32,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:32,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:32,396 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:32,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-02 22:30:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:35,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-02 22:30:35,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6076 backedges. 0 proven. 6076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:36,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722407964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:36,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:36,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2021-11-02 22:30:36,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509914123] [2021-11-02 22:30:36,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-02 22:30:36,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-02 22:30:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2653, Invalid=7853, Unknown=0, NotChecked=0, Total=10506 [2021-11-02 22:30:36,290 INFO L87 Difference]: Start difference. First operand 5622 states and 5769 transitions. Second operand has 103 states, 101 states have (on average 2.00990099009901) internal successors, (203), 53 states have internal predecessors, (203), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:40,627 INFO L93 Difference]: Finished difference Result 5860 states and 5910 transitions. [2021-11-02 22:30:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-11-02 22:30:40,627 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 101 states have (on average 2.00990099009901) internal successors, (203), 53 states have internal predecessors, (203), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2021-11-02 22:30:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:40,635 INFO L225 Difference]: With dead ends: 5860 [2021-11-02 22:30:40,635 INFO L226 Difference]: Without dead ends: 5859 [2021-11-02 22:30:40,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6075 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9628, Invalid=24044, Unknown=0, NotChecked=0, Total=33672 [2021-11-02 22:30:40,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5859 states. [2021-11-02 22:30:40,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5859 to 5759. [2021-11-02 22:30:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5759 states, 4925 states have (on average 1.0272081218274112) internal successors, (5059), 4909 states have internal predecessors, (5059), 52 states have call successors, (52), 51 states have call predecessors, (52), 779 states have return successors, (798), 798 states have call predecessors, (798), 51 states have call successors, (798) [2021-11-02 22:30:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 5909 transitions. [2021-11-02 22:30:40,702 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 5909 transitions. Word has length 253 [2021-11-02 22:30:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:40,702 INFO L470 AbstractCegarLoop]: Abstraction has 5759 states and 5909 transitions. [2021-11-02 22:30:40,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 101 states have (on average 2.00990099009901) internal successors, (203), 53 states have internal predecessors, (203), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 5909 transitions. [2021-11-02 22:30:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-02 22:30:40,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:40,708 INFO L513 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 1, 1, 1, 1, 1] [2021-11-02 22:30:40,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:40,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:40,908 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:30:40,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash 89484407, now seen corresponding path program 50 times [2021-11-02 22:30:40,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:40,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064449347] [2021-11-02 22:30:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:40,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6325 backedges. 0 proven. 6325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:44,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:44,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064449347] [2021-11-02 22:30:44,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064449347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:44,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995822241] [2021-11-02 22:30:44,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:30:44,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:44,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:44,803 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:44,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-02 22:30:48,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:30:48,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:48,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-02 22:30:48,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6325 backedges. 0 proven. 6325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:48,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995822241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:48,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:48,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2021-11-02 22:30:48,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655769862] [2021-11-02 22:30:48,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-11-02 22:30:48,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-11-02 22:30:48,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2757, Invalid=8163, Unknown=0, NotChecked=0, Total=10920 [2021-11-02 22:30:48,810 INFO L87 Difference]: Start difference. First operand 5759 states and 5909 transitions. Second operand has 105 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 54 states have internal predecessors, (207), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:53,060 INFO L93 Difference]: Finished difference Result 5999 states and 6050 transitions. [2021-11-02 22:30:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2021-11-02 22:30:53,061 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 54 states have internal predecessors, (207), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2021-11-02 22:30:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:53,068 INFO L225 Difference]: With dead ends: 5999 [2021-11-02 22:30:53,068 INFO L226 Difference]: Without dead ends: 5998 [2021-11-02 22:30:53,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6367 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=10066, Invalid=25090, Unknown=0, NotChecked=0, Total=35156 [2021-11-02 22:30:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5998 states. [2021-11-02 22:30:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5998 to 5896. [2021-11-02 22:30:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5896 states, 5042 states have (on average 1.0271717572391907) internal successors, (5179), 5026 states have internal predecessors, (5179), 53 states have call successors, (53), 52 states have call predecessors, (53), 798 states have return successors, (817), 817 states have call predecessors, (817), 52 states have call successors, (817) [2021-11-02 22:30:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5896 states to 5896 states and 6049 transitions. [2021-11-02 22:30:53,137 INFO L78 Accepts]: Start accepts. Automaton has 5896 states and 6049 transitions. Word has length 258 [2021-11-02 22:30:53,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:53,137 INFO L470 AbstractCegarLoop]: Abstraction has 5896 states and 6049 transitions. [2021-11-02 22:30:53,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 54 states have internal predecessors, (207), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5896 states and 6049 transitions. [2021-11-02 22:30:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-02 22:30:53,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:53,143 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:53,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-11-02 22:30:53,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-11-02 22:30:53,343 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:30:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1183515946, now seen corresponding path program 18 times [2021-11-02 22:30:53,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:53,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101015107] [2021-11-02 22:30:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:53,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:30:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:54,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:54,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:54,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:54,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:30:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2021-11-02 22:30:54,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:54,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101015107] [2021-11-02 22:30:54,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101015107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:54,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714068732] [2021-11-02 22:30:54,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:30:54,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:54,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:54,362 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:54,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-02 22:30:57,744 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-11-02 22:30:57,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:57,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-02 22:30:57,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2021-11-02 22:30:58,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714068732] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:58,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:58,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-11-02 22:30:58,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510371646] [2021-11-02 22:30:58,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-02 22:30:58,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-02 22:30:58,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:30:58,791 INFO L87 Difference]: Start difference. First operand 5896 states and 6049 transitions. Second operand has 42 states, 41 states have (on average 3.073170731707317) internal successors, (126), 42 states have internal predecessors, (126), 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) [2021-11-02 22:30:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:59,008 INFO L93 Difference]: Finished difference Result 6310 states and 6565 transitions. [2021-11-02 22:30:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-02 22:30:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.073170731707317) internal successors, (126), 42 states have internal predecessors, (126), 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 231 [2021-11-02 22:30:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:59,021 INFO L225 Difference]: With dead ends: 6310 [2021-11-02 22:30:59,021 INFO L226 Difference]: Without dead ends: 6176 [2021-11-02 22:30:59,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 249 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:30:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2021-11-02 22:30:59,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 6125. [2021-11-02 22:30:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6125 states, 5239 states have (on average 1.025959152510021) internal successors, (5375), 5222 states have internal predecessors, (5375), 53 states have call successors, (53), 52 states have call predecessors, (53), 830 states have return successors, (850), 850 states have call predecessors, (850), 52 states have call successors, (850) [2021-11-02 22:30:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6125 states to 6125 states and 6278 transitions. [2021-11-02 22:30:59,111 INFO L78 Accepts]: Start accepts. Automaton has 6125 states and 6278 transitions. Word has length 231 [2021-11-02 22:30:59,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:59,112 INFO L470 AbstractCegarLoop]: Abstraction has 6125 states and 6278 transitions. [2021-11-02 22:30:59,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.073170731707317) internal successors, (126), 42 states have internal predecessors, (126), 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) [2021-11-02 22:30:59,112 INFO L276 IsEmpty]: Start isEmpty. Operand 6125 states and 6278 transitions. [2021-11-02 22:30:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-02 22:30:59,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:59,118 INFO L513 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 1, 1, 1, 1, 1] [2021-11-02 22:30:59,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-11-02 22:30:59,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:59,321 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:30:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash 573004405, now seen corresponding path program 51 times [2021-11-02 22:30:59,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:59,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532662116] [2021-11-02 22:30:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:59,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:03,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:03,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532662116] [2021-11-02 22:31:03,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532662116] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:03,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177474669] [2021-11-02 22:31:03,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:31:03,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:03,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:03,057 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:03,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-02 22:31:06,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-02 22:31:06,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:06,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-02 22:31:06,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:07,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177474669] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:07,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:07,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2021-11-02 22:31:07,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146983300] [2021-11-02 22:31:07,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-02 22:31:07,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-02 22:31:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2863, Invalid=8479, Unknown=0, NotChecked=0, Total=11342 [2021-11-02 22:31:07,474 INFO L87 Difference]: Start difference. First operand 6125 states and 6278 transitions. Second operand has 107 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 55 states have internal predecessors, (211), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:11,915 INFO L93 Difference]: Finished difference Result 6374 states and 6426 transitions. [2021-11-02 22:31:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-02 22:31:11,916 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 55 states have internal predecessors, (211), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2021-11-02 22:31:11,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:11,927 INFO L225 Difference]: With dead ends: 6374 [2021-11-02 22:31:11,927 INFO L226 Difference]: Without dead ends: 6373 [2021-11-02 22:31:11,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6551 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=10361, Invalid=25929, Unknown=0, NotChecked=0, Total=36290 [2021-11-02 22:31:11,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6373 states. [2021-11-02 22:31:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6373 to 6269. [2021-11-02 22:31:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6269 states, 5362 states have (on average 1.025923162998881) internal successors, (5501), 5345 states have internal predecessors, (5501), 54 states have call successors, (54), 53 states have call predecessors, (54), 850 states have return successors, (870), 870 states have call predecessors, (870), 53 states have call successors, (870) [2021-11-02 22:31:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 6425 transitions. [2021-11-02 22:31:12,001 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 6425 transitions. Word has length 263 [2021-11-02 22:31:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:12,001 INFO L470 AbstractCegarLoop]: Abstraction has 6269 states and 6425 transitions. [2021-11-02 22:31:12,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 55 states have internal predecessors, (211), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:12,002 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 6425 transitions. [2021-11-02 22:31:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-02 22:31:12,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:12,006 INFO L513 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 1, 1, 1, 1, 1] [2021-11-02 22:31:12,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-11-02 22:31:12,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:12,207 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:31:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2112912183, now seen corresponding path program 52 times [2021-11-02 22:31:12,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:12,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209765391] [2021-11-02 22:31:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:12,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6838 backedges. 0 proven. 6838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:15,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:15,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209765391] [2021-11-02 22:31:15,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209765391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:15,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018360846] [2021-11-02 22:31:15,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:31:15,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:15,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:15,734 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:15,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-02 22:31:19,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:31:19,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:19,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-02 22:31:19,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6838 backedges. 0 proven. 6838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:19,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018360846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:19,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:19,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2021-11-02 22:31:19,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333149278] [2021-11-02 22:31:19,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-11-02 22:31:19,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:19,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-11-02 22:31:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2971, Invalid=8801, Unknown=0, NotChecked=0, Total=11772 [2021-11-02 22:31:19,902 INFO L87 Difference]: Start difference. First operand 6269 states and 6425 transitions. Second operand has 109 states, 107 states have (on average 2.0093457943925235) internal successors, (215), 56 states have internal predecessors, (215), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:24,495 INFO L93 Difference]: Finished difference Result 6520 states and 6573 transitions. [2021-11-02 22:31:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-11-02 22:31:24,495 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 107 states have (on average 2.0093457943925235) internal successors, (215), 56 states have internal predecessors, (215), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2021-11-02 22:31:24,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:24,504 INFO L225 Difference]: With dead ends: 6520 [2021-11-02 22:31:24,504 INFO L226 Difference]: Without dead ends: 6519 [2021-11-02 22:31:24,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6854 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=10815, Invalid=27015, Unknown=0, NotChecked=0, Total=37830 [2021-11-02 22:31:24,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states. [2021-11-02 22:31:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6519 to 6413. [2021-11-02 22:31:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6413 states, 5485 states have (on average 1.0258887876025524) internal successors, (5627), 5468 states have internal predecessors, (5627), 55 states have call successors, (55), 54 states have call predecessors, (55), 870 states have return successors, (890), 890 states have call predecessors, (890), 54 states have call successors, (890) [2021-11-02 22:31:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6413 states to 6413 states and 6572 transitions. [2021-11-02 22:31:24,578 INFO L78 Accepts]: Start accepts. Automaton has 6413 states and 6572 transitions. Word has length 268 [2021-11-02 22:31:24,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:24,579 INFO L470 AbstractCegarLoop]: Abstraction has 6413 states and 6572 transitions. [2021-11-02 22:31:24,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 107 states have (on average 2.0093457943925235) internal successors, (215), 56 states have internal predecessors, (215), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6413 states and 6572 transitions. [2021-11-02 22:31:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-02 22:31:24,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:24,582 INFO L513 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 1, 1, 1, 1, 1] [2021-11-02 22:31:24,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-11-02 22:31:24,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-11-02 22:31:24,783 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:31:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash -35159115, now seen corresponding path program 53 times [2021-11-02 22:31:24,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:24,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723525394] [2021-11-02 22:31:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:24,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:28,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:28,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723525394] [2021-11-02 22:31:28,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723525394] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:28,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752117102] [2021-11-02 22:31:28,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:31:28,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:28,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:28,562 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:28,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-02 22:31:32,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-02 22:31:32,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:32,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-02 22:31:32,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:33,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752117102] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:33,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:33,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2021-11-02 22:31:33,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151580113] [2021-11-02 22:31:33,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2021-11-02 22:31:33,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-11-02 22:31:33,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=9129, Unknown=0, NotChecked=0, Total=12210 [2021-11-02 22:31:33,395 INFO L87 Difference]: Start difference. First operand 6413 states and 6572 transitions. Second operand has 111 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 57 states have internal predecessors, (219), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:38,447 INFO L93 Difference]: Finished difference Result 6666 states and 6720 transitions. [2021-11-02 22:31:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-11-02 22:31:38,448 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 57 states have internal predecessors, (219), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-11-02 22:31:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:38,457 INFO L225 Difference]: With dead ends: 6666 [2021-11-02 22:31:38,458 INFO L226 Difference]: Without dead ends: 6665 [2021-11-02 22:31:38,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7164 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=11279, Invalid=28123, Unknown=0, NotChecked=0, Total=39402 [2021-11-02 22:31:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2021-11-02 22:31:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6557. [2021-11-02 22:31:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6557 states, 5608 states have (on average 1.0258559201141226) internal successors, (5753), 5591 states have internal predecessors, (5753), 56 states have call successors, (56), 55 states have call predecessors, (56), 890 states have return successors, (910), 910 states have call predecessors, (910), 55 states have call successors, (910) [2021-11-02 22:31:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6557 states to 6557 states and 6719 transitions. [2021-11-02 22:31:38,540 INFO L78 Accepts]: Start accepts. Automaton has 6557 states and 6719 transitions. Word has length 273 [2021-11-02 22:31:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:38,541 INFO L470 AbstractCegarLoop]: Abstraction has 6557 states and 6719 transitions. [2021-11-02 22:31:38,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 57 states have internal predecessors, (219), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:38,541 INFO L276 IsEmpty]: Start isEmpty. Operand 6557 states and 6719 transitions. [2021-11-02 22:31:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-02 22:31:38,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:38,545 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2021-11-02 22:31:38,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-11-02 22:31:38,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:38,745 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:31:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:38,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1302468038, now seen corresponding path program 19 times [2021-11-02 22:31:38,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:38,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192943110] [2021-11-02 22:31:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:38,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:31:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:38,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:38,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:31:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-02 22:31:39,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:39,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192943110] [2021-11-02 22:31:39,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192943110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:39,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165975942] [2021-11-02 22:31:39,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:31:39,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:39,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:39,907 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:39,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-11-02 22:31:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:43,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-02 22:31:43,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-02 22:31:44,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165975942] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:44,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:44,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-11-02 22:31:44,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122711776] [2021-11-02 22:31:44,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-02 22:31:44,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:44,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-02 22:31:44,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:31:44,790 INFO L87 Difference]: Start difference. First operand 6557 states and 6719 transitions. Second operand has 44 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 44 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-02 22:31:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:44,962 INFO L93 Difference]: Finished difference Result 6995 states and 7265 transitions. [2021-11-02 22:31:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-02 22:31:44,963 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 44 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) Word has length 243 [2021-11-02 22:31:44,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:44,973 INFO L225 Difference]: With dead ends: 6995 [2021-11-02 22:31:44,973 INFO L226 Difference]: Without dead ends: 6854 [2021-11-02 22:31:44,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 262 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:31:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2021-11-02 22:31:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6800. [2021-11-02 22:31:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 5817 states have (on average 1.0247550283651368) internal successors, (5961), 5799 states have internal predecessors, (5961), 56 states have call successors, (56), 55 states have call predecessors, (56), 924 states have return successors, (945), 945 states have call predecessors, (945), 55 states have call successors, (945) [2021-11-02 22:31:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 6962 transitions. [2021-11-02 22:31:45,110 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 6962 transitions. Word has length 243 [2021-11-02 22:31:45,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:45,110 INFO L470 AbstractCegarLoop]: Abstraction has 6800 states and 6962 transitions. [2021-11-02 22:31:45,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 44 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-02 22:31:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 6962 transitions. [2021-11-02 22:31:45,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-02 22:31:45,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:45,114 INFO L513 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 1, 1, 1, 1, 1] [2021-11-02 22:31:45,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-11-02 22:31:45,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-11-02 22:31:45,314 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:31:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1578637815, now seen corresponding path program 54 times [2021-11-02 22:31:45,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:45,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220867240] [2021-11-02 22:31:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:45,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7371 backedges. 0 proven. 7371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:49,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:49,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220867240] [2021-11-02 22:31:49,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220867240] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:49,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440859430] [2021-11-02 22:31:49,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:31:49,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:49,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:49,656 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:49,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-11-02 22:31:53,680 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-02 22:31:53,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:53,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-02 22:31:53,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7371 backedges. 0 proven. 7371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:54,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440859430] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:54,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:54,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2021-11-02 22:31:54,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285999555] [2021-11-02 22:31:54,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-11-02 22:31:54,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-11-02 22:31:54,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3193, Invalid=9463, Unknown=0, NotChecked=0, Total=12656 [2021-11-02 22:31:54,807 INFO L87 Difference]: Start difference. First operand 6800 states and 6962 transitions. Second operand has 113 states, 111 states have (on average 2.009009009009009) internal successors, (223), 58 states have internal predecessors, (223), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:00,065 INFO L93 Difference]: Finished difference Result 7062 states and 7117 transitions. [2021-11-02 22:32:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2021-11-02 22:32:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 111 states have (on average 2.009009009009009) internal successors, (223), 58 states have internal predecessors, (223), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2021-11-02 22:32:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:00,076 INFO L225 Difference]: With dead ends: 7062 [2021-11-02 22:32:00,076 INFO L226 Difference]: Without dead ends: 7061 [2021-11-02 22:32:00,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7359 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=11591, Invalid=29011, Unknown=0, NotChecked=0, Total=40602 [2021-11-02 22:32:00,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-11-02 22:32:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 6951. [2021-11-02 22:32:00,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6951 states, 5946 states have (on average 1.0247225025227042) internal successors, (6093), 5928 states have internal predecessors, (6093), 57 states have call successors, (57), 56 states have call predecessors, (57), 945 states have return successors, (966), 966 states have call predecessors, (966), 56 states have call successors, (966) [2021-11-02 22:32:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 7116 transitions. [2021-11-02 22:32:00,161 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 7116 transitions. Word has length 278 [2021-11-02 22:32:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:00,162 INFO L470 AbstractCegarLoop]: Abstraction has 6951 states and 7116 transitions. [2021-11-02 22:32:00,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 111 states have (on average 2.009009009009009) internal successors, (223), 58 states have internal predecessors, (223), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 7116 transitions. [2021-11-02 22:32:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-02 22:32:00,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:00,166 INFO L513 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 1, 1, 1, 1, 1] [2021-11-02 22:32:00,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-11-02 22:32:00,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-02 22:32:00,367 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:32:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:00,367 INFO L85 PathProgramCache]: Analyzing trace with hash 58006773, now seen corresponding path program 55 times [2021-11-02 22:32:00,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:00,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991892432] [2021-11-02 22:32:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:00,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 0 proven. 7645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:04,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:04,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991892432] [2021-11-02 22:32:04,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991892432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:04,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258597578] [2021-11-02 22:32:04,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:32:04,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:04,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:04,660 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:04,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-02 22:32:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:08,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-02 22:32:08,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 0 proven. 7645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:09,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258597578] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:09,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:09,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2021-11-02 22:32:09,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898909692] [2021-11-02 22:32:09,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-11-02 22:32:09,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:09,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-11-02 22:32:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3307, Invalid=9803, Unknown=0, NotChecked=0, Total=13110 [2021-11-02 22:32:09,541 INFO L87 Difference]: Start difference. First operand 6951 states and 7116 transitions. Second operand has 115 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 59 states have internal predecessors, (227), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:15,050 INFO L93 Difference]: Finished difference Result 7215 states and 7271 transitions. [2021-11-02 22:32:15,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2021-11-02 22:32:15,050 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 59 states have internal predecessors, (227), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2021-11-02 22:32:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:15,060 INFO L225 Difference]: With dead ends: 7215 [2021-11-02 22:32:15,060 INFO L226 Difference]: Without dead ends: 7214 [2021-11-02 22:32:15,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7680 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=12071, Invalid=30159, Unknown=0, NotChecked=0, Total=42230 [2021-11-02 22:32:15,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7214 states. [2021-11-02 22:32:15,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7214 to 7102. [2021-11-02 22:32:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7102 states, 6075 states have (on average 1.0246913580246915) internal successors, (6225), 6057 states have internal predecessors, (6225), 58 states have call successors, (58), 57 states have call predecessors, (58), 966 states have return successors, (987), 987 states have call predecessors, (987), 57 states have call successors, (987) [2021-11-02 22:32:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7102 states to 7102 states and 7270 transitions. [2021-11-02 22:32:15,145 INFO L78 Accepts]: Start accepts. Automaton has 7102 states and 7270 transitions. Word has length 283 [2021-11-02 22:32:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:15,145 INFO L470 AbstractCegarLoop]: Abstraction has 7102 states and 7270 transitions. [2021-11-02 22:32:15,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 59 states have internal predecessors, (227), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 7102 states and 7270 transitions. [2021-11-02 22:32:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-11-02 22:32:15,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:15,150 INFO L513 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 1, 1, 1, 1, 1] [2021-11-02 22:32:15,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-11-02 22:32:15,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:15,351 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:32:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1264076983, now seen corresponding path program 56 times [2021-11-02 22:32:15,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:15,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141726682] [2021-11-02 22:32:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:15,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7924 backedges. 0 proven. 7924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:19,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:19,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141726682] [2021-11-02 22:32:19,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141726682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:19,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857768334] [2021-11-02 22:32:19,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:32:19,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:19,798 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:19,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-02 22:32:23,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:32:23,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:32:23,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 116 conjunts are in the unsatisfiable core [2021-11-02 22:32:23,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7924 backedges. 0 proven. 7924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:24,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857768334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:24,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:24,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2021-11-02 22:32:24,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661969850] [2021-11-02 22:32:24,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2021-11-02 22:32:24,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:24,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-11-02 22:32:24,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3423, Invalid=10149, Unknown=0, NotChecked=0, Total=13572 [2021-11-02 22:32:24,807 INFO L87 Difference]: Start difference. First operand 7102 states and 7270 transitions. Second operand has 117 states, 115 states have (on average 2.008695652173913) internal successors, (231), 60 states have internal predecessors, (231), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:30,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:30,473 INFO L93 Difference]: Finished difference Result 7368 states and 7425 transitions. [2021-11-02 22:32:30,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-11-02 22:32:30,474 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 115 states have (on average 2.008695652173913) internal successors, (231), 60 states have internal predecessors, (231), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2021-11-02 22:32:30,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:30,483 INFO L225 Difference]: With dead ends: 7368 [2021-11-02 22:32:30,483 INFO L226 Difference]: Without dead ends: 7367 [2021-11-02 22:32:30,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8008 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=12561, Invalid=31329, Unknown=0, NotChecked=0, Total=43890 [2021-11-02 22:32:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7367 states. [2021-11-02 22:32:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7367 to 7253. [2021-11-02 22:32:30,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7253 states, 6204 states have (on average 1.0246615087040618) internal successors, (6357), 6186 states have internal predecessors, (6357), 59 states have call successors, (59), 58 states have call predecessors, (59), 987 states have return successors, (1008), 1008 states have call predecessors, (1008), 58 states have call successors, (1008) [2021-11-02 22:32:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7253 states to 7253 states and 7424 transitions. [2021-11-02 22:32:30,568 INFO L78 Accepts]: Start accepts. Automaton has 7253 states and 7424 transitions. Word has length 288 [2021-11-02 22:32:30,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:30,568 INFO L470 AbstractCegarLoop]: Abstraction has 7253 states and 7424 transitions. [2021-11-02 22:32:30,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 115 states have (on average 2.008695652173913) internal successors, (231), 60 states have internal predecessors, (231), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 7253 states and 7424 transitions. [2021-11-02 22:32:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-02 22:32:30,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:30,572 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2021-11-02 22:32:30,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-11-02 22:32:30,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-11-02 22:32:30,773 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:32:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:30,774 INFO L85 PathProgramCache]: Analyzing trace with hash 582919722, now seen corresponding path program 20 times [2021-11-02 22:32:30,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:30,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856645818] [2021-11-02 22:32:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:30,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:30,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:32:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:32:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2502 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2021-11-02 22:32:32,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:32,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856645818] [2021-11-02 22:32:32,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856645818] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:32,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310839534] [2021-11-02 22:32:32,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:32:32,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:32,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:32,059 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:32,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-11-02 22:32:36,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:32:36,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:32:36,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-02 22:32:36,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2502 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2021-11-02 22:32:37,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310839534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:37,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:37,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-11-02 22:32:37,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891317072] [2021-11-02 22:32:37,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-02 22:32:37,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:37,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-02 22:32:37,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 22:32:37,406 INFO L87 Difference]: Start difference. First operand 7253 states and 7424 transitions. Second operand has 46 states, 45 states have (on average 3.066666666666667) internal successors, (138), 46 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2021-11-02 22:32:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:37,595 INFO L93 Difference]: Finished difference Result 7715 states and 8000 transitions. [2021-11-02 22:32:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-02 22:32:37,601 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.066666666666667) internal successors, (138), 46 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) Word has length 255 [2021-11-02 22:32:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:37,652 INFO L225 Difference]: With dead ends: 7715 [2021-11-02 22:32:37,652 INFO L226 Difference]: Without dead ends: 7567 [2021-11-02 22:32:37,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 275 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 22:32:37,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7567 states. [2021-11-02 22:32:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7567 to 7510. [2021-11-02 22:32:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7510 states, 6425 states have (on average 1.0236575875486382) internal successors, (6577), 6406 states have internal predecessors, (6577), 59 states have call successors, (59), 58 states have call predecessors, (59), 1023 states have return successors, (1045), 1045 states have call predecessors, (1045), 58 states have call successors, (1045) [2021-11-02 22:32:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7510 states to 7510 states and 7681 transitions. [2021-11-02 22:32:37,769 INFO L78 Accepts]: Start accepts. Automaton has 7510 states and 7681 transitions. Word has length 255 [2021-11-02 22:32:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:37,769 INFO L470 AbstractCegarLoop]: Abstraction has 7510 states and 7681 transitions. [2021-11-02 22:32:37,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.066666666666667) internal successors, (138), 46 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2021-11-02 22:32:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7510 states and 7681 transitions. [2021-11-02 22:32:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-02 22:32:37,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:37,774 INFO L513 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 1, 1, 1, 1, 1] [2021-11-02 22:32:37,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-11-02 22:32:37,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-11-02 22:32:37,974 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:32:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash 616834613, now seen corresponding path program 57 times [2021-11-02 22:32:37,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:37,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898816260] [2021-11-02 22:32:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:37,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:42,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:42,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898816260] [2021-11-02 22:32:42,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898816260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:42,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239309909] [2021-11-02 22:32:42,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:32:42,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:42,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:42,988 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:42,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-11-02 22:32:47,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-02 22:32:47,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:32:47,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 118 conjunts are in the unsatisfiable core [2021-11-02 22:32:47,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:48,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239309909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:48,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:48,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2021-11-02 22:32:48,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103180559] [2021-11-02 22:32:48,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2021-11-02 22:32:48,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:48,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-11-02 22:32:48,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3541, Invalid=10501, Unknown=0, NotChecked=0, Total=14042 [2021-11-02 22:32:48,498 INFO L87 Difference]: Start difference. First operand 7510 states and 7681 transitions. Second operand has 119 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 61 states have internal predecessors, (235), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:54,245 INFO L93 Difference]: Finished difference Result 7785 states and 7843 transitions. [2021-11-02 22:32:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-11-02 22:32:54,246 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 61 states have internal predecessors, (235), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2021-11-02 22:32:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:54,255 INFO L225 Difference]: With dead ends: 7785 [2021-11-02 22:32:54,256 INFO L226 Difference]: Without dead ends: 7784 [2021-11-02 22:32:54,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8214 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=12890, Invalid=32266, Unknown=0, NotChecked=0, Total=45156 [2021-11-02 22:32:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7784 states. [2021-11-02 22:32:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7784 to 7668. [2021-11-02 22:32:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7668 states, 6560 states have (on average 1.0236280487804879) internal successors, (6715), 6541 states have internal predecessors, (6715), 60 states have call successors, (60), 59 states have call predecessors, (60), 1045 states have return successors, (1067), 1067 states have call predecessors, (1067), 59 states have call successors, (1067) [2021-11-02 22:32:54,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 7842 transitions. [2021-11-02 22:32:54,345 INFO L78 Accepts]: Start accepts. Automaton has 7668 states and 7842 transitions. Word has length 293 [2021-11-02 22:32:54,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:54,346 INFO L470 AbstractCegarLoop]: Abstraction has 7668 states and 7842 transitions. [2021-11-02 22:32:54,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 61 states have internal predecessors, (235), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:54,346 INFO L276 IsEmpty]: Start isEmpty. Operand 7668 states and 7842 transitions. [2021-11-02 22:32:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-02 22:32:54,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:54,350 INFO L513 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 1, 1, 1, 1, 1] [2021-11-02 22:32:54,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-11-02 22:32:54,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:54,551 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:32:54,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:54,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1815938935, now seen corresponding path program 58 times [2021-11-02 22:32:54,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:54,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992852125] [2021-11-02 22:32:54,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:54,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8497 backedges. 0 proven. 8497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:59,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:59,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992852125] [2021-11-02 22:32:59,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992852125] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:59,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814315274] [2021-11-02 22:32:59,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:32:59,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:59,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:59,391 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:59,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-11-02 22:33:03,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:33:03,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:33:03,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-02 22:33:03,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:33:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8497 backedges. 0 proven. 8497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:04,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814315274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:04,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:33:04,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2021-11-02 22:33:04,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566407154] [2021-11-02 22:33:04,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2021-11-02 22:33:04,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:04,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-11-02 22:33:04,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3661, Invalid=10859, Unknown=0, NotChecked=0, Total=14520 [2021-11-02 22:33:04,690 INFO L87 Difference]: Start difference. First operand 7668 states and 7842 transitions. Second operand has 121 states, 119 states have (on average 2.008403361344538) internal successors, (239), 62 states have internal predecessors, (239), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:10,566 INFO L93 Difference]: Finished difference Result 7945 states and 8004 transitions. [2021-11-02 22:33:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2021-11-02 22:33:10,566 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 119 states have (on average 2.008403361344538) internal successors, (239), 62 states have internal predecessors, (239), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2021-11-02 22:33:10,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:10,577 INFO L225 Difference]: With dead ends: 7945 [2021-11-02 22:33:10,577 INFO L226 Difference]: Without dead ends: 7944 [2021-11-02 22:33:10,582 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8553 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=13396, Invalid=33476, Unknown=0, NotChecked=0, Total=46872 [2021-11-02 22:33:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7944 states. [2021-11-02 22:33:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7944 to 7826. [2021-11-02 22:33:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7826 states, 6695 states have (on average 1.023599701269604) internal successors, (6853), 6676 states have internal predecessors, (6853), 61 states have call successors, (61), 60 states have call predecessors, (61), 1067 states have return successors, (1089), 1089 states have call predecessors, (1089), 60 states have call successors, (1089) [2021-11-02 22:33:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7826 states to 7826 states and 8003 transitions. [2021-11-02 22:33:10,673 INFO L78 Accepts]: Start accepts. Automaton has 7826 states and 8003 transitions. Word has length 298 [2021-11-02 22:33:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:10,673 INFO L470 AbstractCegarLoop]: Abstraction has 7826 states and 8003 transitions. [2021-11-02 22:33:10,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 119 states have (on average 2.008403361344538) internal successors, (239), 62 states have internal predecessors, (239), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 7826 states and 8003 transitions. [2021-11-02 22:33:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-11-02 22:33:10,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:10,678 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 1, 1, 1, 1, 1] [2021-11-02 22:33:10,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-11-02 22:33:10,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:10,879 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:33:10,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:10,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1925750645, now seen corresponding path program 59 times [2021-11-02 22:33:10,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:10,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42894229] [2021-11-02 22:33:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:10,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8791 backedges. 0 proven. 8791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:15,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:15,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42894229] [2021-11-02 22:33:15,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42894229] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:15,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281808782] [2021-11-02 22:33:15,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:33:15,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:15,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:15,691 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:33:15,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-11-02 22:33:20,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-02 22:33:20,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:33:20,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 122 conjunts are in the unsatisfiable core [2021-11-02 22:33:20,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:33:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8791 backedges. 0 proven. 8791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:21,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281808782] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:21,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:33:21,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2021-11-02 22:33:21,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434486032] [2021-11-02 22:33:21,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-11-02 22:33:21,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:21,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-11-02 22:33:21,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3783, Invalid=11223, Unknown=0, NotChecked=0, Total=15006 [2021-11-02 22:33:21,306 INFO L87 Difference]: Start difference. First operand 7826 states and 8003 transitions. Second operand has 123 states, 121 states have (on average 2.0082644628099175) internal successors, (243), 63 states have internal predecessors, (243), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:27,530 INFO L93 Difference]: Finished difference Result 8105 states and 8165 transitions. [2021-11-02 22:33:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-11-02 22:33:27,530 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 121 states have (on average 2.0082644628099175) internal successors, (243), 63 states have internal predecessors, (243), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2021-11-02 22:33:27,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:27,541 INFO L225 Difference]: With dead ends: 8105 [2021-11-02 22:33:27,541 INFO L226 Difference]: Without dead ends: 8104 [2021-11-02 22:33:27,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8899 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=13912, Invalid=34708, Unknown=0, NotChecked=0, Total=48620 [2021-11-02 22:33:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8104 states. [2021-11-02 22:33:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8104 to 7984. [2021-11-02 22:33:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7984 states, 6830 states have (on average 1.0235724743777452) internal successors, (6991), 6811 states have internal predecessors, (6991), 62 states have call successors, (62), 61 states have call predecessors, (62), 1089 states have return successors, (1111), 1111 states have call predecessors, (1111), 61 states have call successors, (1111) [2021-11-02 22:33:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7984 states to 7984 states and 8164 transitions. [2021-11-02 22:33:27,688 INFO L78 Accepts]: Start accepts. Automaton has 7984 states and 8164 transitions. Word has length 303 [2021-11-02 22:33:27,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:27,689 INFO L470 AbstractCegarLoop]: Abstraction has 7984 states and 8164 transitions. [2021-11-02 22:33:27,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 121 states have (on average 2.0082644628099175) internal successors, (243), 63 states have internal predecessors, (243), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:27,689 INFO L276 IsEmpty]: Start isEmpty. Operand 7984 states and 8164 transitions. [2021-11-02 22:33:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-02 22:33:27,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:27,693 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2021-11-02 22:33:27,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-11-02 22:33:27,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-11-02 22:33:27,894 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:33:27,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:27,894 INFO L85 PathProgramCache]: Analyzing trace with hash -932737222, now seen corresponding path program 21 times [2021-11-02 22:33:27,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:27,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053124003] [2021-11-02 22:33:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:27,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:27,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:33:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:29,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:29,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:33:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2021-11-02 22:33:29,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:29,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053124003] [2021-11-02 22:33:29,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053124003] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:29,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411711681] [2021-11-02 22:33:29,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:33:29,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:29,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:29,313 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:33:29,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-11-02 22:33:33,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-02 22:33:33,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:33:33,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-02 22:33:33,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:33:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2753 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2021-11-02 22:33:34,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411711681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:34,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:33:34,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2021-11-02 22:33:34,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658430273] [2021-11-02 22:33:34,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-02 22:33:34,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:34,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-02 22:33:34,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 22:33:34,780 INFO L87 Difference]: Start difference. First operand 7984 states and 8164 transitions. Second operand has 48 states, 47 states have (on average 3.0638297872340425) internal successors, (144), 48 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-02 22:33:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:34,933 INFO L93 Difference]: Finished difference Result 8470 states and 8770 transitions. [2021-11-02 22:33:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-02 22:33:34,934 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.0638297872340425) internal successors, (144), 48 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) Word has length 267 [2021-11-02 22:33:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:34,943 INFO L225 Difference]: With dead ends: 8470 [2021-11-02 22:33:34,943 INFO L226 Difference]: Without dead ends: 8315 [2021-11-02 22:33:34,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 288 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 22:33:34,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8315 states. [2021-11-02 22:33:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8315 to 8255. [2021-11-02 22:33:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8255 states, 7063 states have (on average 1.022653263485771) internal successors, (7223), 7043 states have internal predecessors, (7223), 62 states have call successors, (62), 61 states have call predecessors, (62), 1127 states have return successors, (1150), 1150 states have call predecessors, (1150), 61 states have call successors, (1150) [2021-11-02 22:33:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8255 states to 8255 states and 8435 transitions. [2021-11-02 22:33:35,058 INFO L78 Accepts]: Start accepts. Automaton has 8255 states and 8435 transitions. Word has length 267 [2021-11-02 22:33:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:35,058 INFO L470 AbstractCegarLoop]: Abstraction has 8255 states and 8435 transitions. [2021-11-02 22:33:35,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.0638297872340425) internal successors, (144), 48 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-02 22:33:35,058 INFO L276 IsEmpty]: Start isEmpty. Operand 8255 states and 8435 transitions. [2021-11-02 22:33:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-02 22:33:35,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:35,062 INFO L513 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 1, 1, 1, 1, 1] [2021-11-02 22:33:35,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-11-02 22:33:35,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:35,263 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:33:35,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash 676484663, now seen corresponding path program 60 times [2021-11-02 22:33:35,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:35,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242202977] [2021-11-02 22:33:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:35,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 0 proven. 9090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:39,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:39,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242202977] [2021-11-02 22:33:39,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242202977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:39,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023135758] [2021-11-02 22:33:39,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:33:39,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:39,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:39,633 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:33:39,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-11-02 22:33:43,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-02 22:33:43,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:33:43,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 124 conjunts are in the unsatisfiable core [2021-11-02 22:33:43,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:33:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 0 proven. 9090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:44,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023135758] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:44,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:33:44,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2021-11-02 22:33:44,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052486381] [2021-11-02 22:33:44,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2021-11-02 22:33:44,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-11-02 22:33:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3907, Invalid=11593, Unknown=0, NotChecked=0, Total=15500 [2021-11-02 22:33:44,526 INFO L87 Difference]: Start difference. First operand 8255 states and 8435 transitions. Second operand has 125 states, 123 states have (on average 2.008130081300813) internal successors, (247), 64 states have internal predecessors, (247), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:50,084 INFO L93 Difference]: Finished difference Result 8543 states and 8604 transitions. [2021-11-02 22:33:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2021-11-02 22:33:50,085 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 123 states have (on average 2.008130081300813) internal successors, (247), 64 states have internal predecessors, (247), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 308 [2021-11-02 22:33:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:50,093 INFO L225 Difference]: With dead ends: 8543 [2021-11-02 22:33:50,093 INFO L226 Difference]: Without dead ends: 8542 [2021-11-02 22:33:50,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9116 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=14258, Invalid=35694, Unknown=0, NotChecked=0, Total=49952 [2021-11-02 22:33:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8542 states. [2021-11-02 22:33:50,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8542 to 8420. [2021-11-02 22:33:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8420 states, 7204 states have (on average 1.0226263187118267) internal successors, (7367), 7184 states have internal predecessors, (7367), 63 states have call successors, (63), 62 states have call predecessors, (63), 1150 states have return successors, (1173), 1173 states have call predecessors, (1173), 62 states have call successors, (1173) [2021-11-02 22:33:50,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8420 states to 8420 states and 8603 transitions. [2021-11-02 22:33:50,183 INFO L78 Accepts]: Start accepts. Automaton has 8420 states and 8603 transitions. Word has length 308 [2021-11-02 22:33:50,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:50,183 INFO L470 AbstractCegarLoop]: Abstraction has 8420 states and 8603 transitions. [2021-11-02 22:33:50,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 123 states have (on average 2.008130081300813) internal successors, (247), 64 states have internal predecessors, (247), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:50,183 INFO L276 IsEmpty]: Start isEmpty. Operand 8420 states and 8603 transitions. [2021-11-02 22:33:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-02 22:33:50,188 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:50,188 INFO L513 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 1, 1, 1, 1, 1] [2021-11-02 22:33:50,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-11-02 22:33:50,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:50,389 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:33:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1568049333, now seen corresponding path program 61 times [2021-11-02 22:33:50,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:50,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606893862] [2021-11-02 22:33:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:50,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9394 backedges. 0 proven. 9394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:54,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:54,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606893862] [2021-11-02 22:33:54,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606893862] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:54,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937283410] [2021-11-02 22:33:54,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:33:54,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:54,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:54,903 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:33:54,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-11-02 22:33:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:59,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 126 conjunts are in the unsatisfiable core [2021-11-02 22:33:59,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:33:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9394 backedges. 0 proven. 9394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:59,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937283410] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:59,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:33:59,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2021-11-02 22:33:59,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675217822] [2021-11-02 22:33:59,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2021-11-02 22:33:59,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-11-02 22:33:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4033, Invalid=11969, Unknown=0, NotChecked=0, Total=16002 [2021-11-02 22:33:59,884 INFO L87 Difference]: Start difference. First operand 8420 states and 8603 transitions. Second operand has 127 states, 125 states have (on average 2.008) internal successors, (251), 65 states have internal predecessors, (251), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:06,179 INFO L93 Difference]: Finished difference Result 8710 states and 8772 transitions. [2021-11-02 22:34:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2021-11-02 22:34:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 125 states have (on average 2.008) internal successors, (251), 65 states have internal predecessors, (251), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2021-11-02 22:34:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:06,192 INFO L225 Difference]: With dead ends: 8710 [2021-11-02 22:34:06,192 INFO L226 Difference]: Without dead ends: 8709 [2021-11-02 22:34:06,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9473 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=14790, Invalid=36966, Unknown=0, NotChecked=0, Total=51756 [2021-11-02 22:34:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8709 states. [2021-11-02 22:34:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8709 to 8585. [2021-11-02 22:34:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8585 states, 7345 states have (on average 1.0226004084411164) internal successors, (7511), 7325 states have internal predecessors, (7511), 64 states have call successors, (64), 63 states have call predecessors, (64), 1173 states have return successors, (1196), 1196 states have call predecessors, (1196), 63 states have call successors, (1196) [2021-11-02 22:34:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8585 states to 8585 states and 8771 transitions. [2021-11-02 22:34:06,352 INFO L78 Accepts]: Start accepts. Automaton has 8585 states and 8771 transitions. Word has length 313 [2021-11-02 22:34:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:06,352 INFO L470 AbstractCegarLoop]: Abstraction has 8585 states and 8771 transitions. [2021-11-02 22:34:06,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 125 states have (on average 2.008) internal successors, (251), 65 states have internal predecessors, (251), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8585 states and 8771 transitions. [2021-11-02 22:34:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-02 22:34:06,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:06,360 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2021-11-02 22:34:06,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:06,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:06,585 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:34:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1518549206, now seen corresponding path program 22 times [2021-11-02 22:34:06,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:06,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838082580] [2021-11-02 22:34:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:06,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:06,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:34:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:06,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:06,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:34:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2021-11-02 22:34:07,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:07,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838082580] [2021-11-02 22:34:07,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838082580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:07,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290098841] [2021-11-02 22:34:07,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:34:07,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:34:07,950 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:34:07,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-11-02 22:34:12,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:34:12,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:34:12,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-02 22:34:12,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2021-11-02 22:34:14,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290098841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:14,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:34:14,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2021-11-02 22:34:14,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210844912] [2021-11-02 22:34:14,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-02 22:34:14,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:14,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-02 22:34:14,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2021-11-02 22:34:14,074 INFO L87 Difference]: Start difference. First operand 8585 states and 8771 transitions. Second operand has 50 states, 49 states have (on average 3.061224489795918) internal successors, (150), 50 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (24), 24 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-02 22:34:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:14,281 INFO L93 Difference]: Finished difference Result 9087 states and 9397 transitions. [2021-11-02 22:34:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 22:34:14,281 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 3.061224489795918) internal successors, (150), 50 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (24), 24 states have call predecessors, (24), 1 states have call successors, (24) Word has length 279 [2021-11-02 22:34:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:14,295 INFO L225 Difference]: With dead ends: 9087 [2021-11-02 22:34:14,295 INFO L226 Difference]: Without dead ends: 8925 [2021-11-02 22:34:14,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 301 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2021-11-02 22:34:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2021-11-02 22:34:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 8863. [2021-11-02 22:34:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8863 states, 7584 states have (on average 1.021756329113924) internal successors, (7749), 7563 states have internal predecessors, (7749), 64 states have call successors, (64), 63 states have call predecessors, (64), 1212 states have return successors, (1236), 1236 states have call predecessors, (1236), 63 states have call successors, (1236) [2021-11-02 22:34:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8863 states to 8863 states and 9049 transitions. [2021-11-02 22:34:14,401 INFO L78 Accepts]: Start accepts. Automaton has 8863 states and 9049 transitions. Word has length 279 [2021-11-02 22:34:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:14,401 INFO L470 AbstractCegarLoop]: Abstraction has 8863 states and 9049 transitions. [2021-11-02 22:34:14,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 3.061224489795918) internal successors, (150), 50 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (24), 24 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-02 22:34:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand 8863 states and 9049 transitions. [2021-11-02 22:34:14,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-02 22:34:14,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:14,406 INFO L513 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 1, 1, 1, 1, 1] [2021-11-02 22:34:14,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:14,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:14,607 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:34:14,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash -400280329, now seen corresponding path program 62 times [2021-11-02 22:34:14,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:14,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468664171] [2021-11-02 22:34:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:14,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:20,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:20,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468664171] [2021-11-02 22:34:20,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468664171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:20,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866605410] [2021-11-02 22:34:20,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:34:20,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:20,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:34:20,097 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:34:20,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-02 22:34:25,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:34:25,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:34:25,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 128 conjunts are in the unsatisfiable core [2021-11-02 22:34:25,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:26,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866605410] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:26,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:34:26,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2021-11-02 22:34:26,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192984272] [2021-11-02 22:34:26,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2021-11-02 22:34:26,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:26,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-11-02 22:34:26,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4161, Invalid=12351, Unknown=0, NotChecked=0, Total=16512 [2021-11-02 22:34:26,445 INFO L87 Difference]: Start difference. First operand 8863 states and 9049 transitions. Second operand has 129 states, 127 states have (on average 2.0078740157480315) internal successors, (255), 66 states have internal predecessors, (255), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:33,129 INFO L93 Difference]: Finished difference Result 9162 states and 9225 transitions. [2021-11-02 22:34:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2021-11-02 22:34:33,129 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 127 states have (on average 2.0078740157480315) internal successors, (255), 66 states have internal predecessors, (255), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2021-11-02 22:34:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:33,141 INFO L225 Difference]: With dead ends: 9162 [2021-11-02 22:34:33,141 INFO L226 Difference]: Without dead ends: 9161 [2021-11-02 22:34:33,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9697 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=15147, Invalid=37983, Unknown=0, NotChecked=0, Total=53130 [2021-11-02 22:34:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9161 states. [2021-11-02 22:34:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9161 to 9035. [2021-11-02 22:34:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9035 states, 7731 states have (on average 1.021730694606131) internal successors, (7899), 7710 states have internal predecessors, (7899), 65 states have call successors, (65), 64 states have call predecessors, (65), 1236 states have return successors, (1260), 1260 states have call predecessors, (1260), 64 states have call successors, (1260) [2021-11-02 22:34:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9035 states to 9035 states and 9224 transitions. [2021-11-02 22:34:33,246 INFO L78 Accepts]: Start accepts. Automaton has 9035 states and 9224 transitions. Word has length 318 [2021-11-02 22:34:33,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:33,246 INFO L470 AbstractCegarLoop]: Abstraction has 9035 states and 9224 transitions. [2021-11-02 22:34:33,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 127 states have (on average 2.0078740157480315) internal successors, (255), 66 states have internal predecessors, (255), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 9035 states and 9224 transitions. [2021-11-02 22:34:33,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-02 22:34:33,254 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:33,254 INFO L513 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 1, 1, 1, 1, 1] [2021-11-02 22:34:33,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-11-02 22:34:33,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:33,481 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:34:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:33,481 INFO L85 PathProgramCache]: Analyzing trace with hash -205397515, now seen corresponding path program 63 times [2021-11-02 22:34:33,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:33,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076683268] [2021-11-02 22:34:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:33,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10017 backedges. 0 proven. 10017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:39,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:39,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076683268] [2021-11-02 22:34:39,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076683268] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:39,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066632857] [2021-11-02 22:34:39,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:34:39,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:39,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:34:39,207 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:34:39,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-11-02 22:34:44,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-11-02 22:34:44,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:34:44,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-02 22:34:44,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 10017 backedges. 0 proven. 10017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:45,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066632857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:45,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:34:45,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2021-11-02 22:34:45,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271358921] [2021-11-02 22:34:45,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-02 22:34:45,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:45,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-02 22:34:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4291, Invalid=12739, Unknown=0, NotChecked=0, Total=17030 [2021-11-02 22:34:45,200 INFO L87 Difference]: Start difference. First operand 9035 states and 9224 transitions. Second operand has 131 states, 129 states have (on average 2.007751937984496) internal successors, (259), 67 states have internal predecessors, (259), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:52,197 INFO L93 Difference]: Finished difference Result 9336 states and 9400 transitions. [2021-11-02 22:34:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-11-02 22:34:52,198 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 129 states have (on average 2.007751937984496) internal successors, (259), 67 states have internal predecessors, (259), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2021-11-02 22:34:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:52,215 INFO L225 Difference]: With dead ends: 9336 [2021-11-02 22:34:52,216 INFO L226 Difference]: Without dead ends: 9335 [2021-11-02 22:34:52,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10065 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=15695, Invalid=39295, Unknown=0, NotChecked=0, Total=54990 [2021-11-02 22:34:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9335 states. [2021-11-02 22:34:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9335 to 9207. [2021-11-02 22:34:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9207 states, 7878 states have (on average 1.0217060167555216) internal successors, (8049), 7857 states have internal predecessors, (8049), 66 states have call successors, (66), 65 states have call predecessors, (66), 1260 states have return successors, (1284), 1284 states have call predecessors, (1284), 65 states have call successors, (1284) [2021-11-02 22:34:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9207 states to 9207 states and 9399 transitions. [2021-11-02 22:34:52,355 INFO L78 Accepts]: Start accepts. Automaton has 9207 states and 9399 transitions. Word has length 323 [2021-11-02 22:34:52,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:52,356 INFO L470 AbstractCegarLoop]: Abstraction has 9207 states and 9399 transitions. [2021-11-02 22:34:52,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 129 states have (on average 2.007751937984496) internal successors, (259), 67 states have internal predecessors, (259), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 9207 states and 9399 transitions. [2021-11-02 22:34:52,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-02 22:34:52,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:52,361 INFO L513 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 1, 1, 1, 1, 1] [2021-11-02 22:34:52,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-11-02 22:34:52,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-11-02 22:34:52,562 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:34:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:52,562 INFO L85 PathProgramCache]: Analyzing trace with hash -717315145, now seen corresponding path program 64 times [2021-11-02 22:34:52,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:52,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572076923] [2021-11-02 22:34:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:52,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10336 backedges. 0 proven. 10336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:57,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:57,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572076923] [2021-11-02 22:34:57,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572076923] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:57,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073838389] [2021-11-02 22:34:57,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:34:57,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:57,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:34:57,969 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:34:57,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-11-02 22:35:03,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:35:03,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:35:03,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 132 conjunts are in the unsatisfiable core [2021-11-02 22:35:03,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10336 backedges. 0 proven. 10336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:04,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073838389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:04,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:35:04,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2021-11-02 22:35:04,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60026346] [2021-11-02 22:35:04,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2021-11-02 22:35:04,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2021-11-02 22:35:04,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4423, Invalid=13133, Unknown=0, NotChecked=0, Total=17556 [2021-11-02 22:35:04,333 INFO L87 Difference]: Start difference. First operand 9207 states and 9399 transitions. Second operand has 133 states, 131 states have (on average 2.0076335877862594) internal successors, (263), 68 states have internal predecessors, (263), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:11,805 INFO L93 Difference]: Finished difference Result 9510 states and 9575 transitions. [2021-11-02 22:35:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2021-11-02 22:35:11,806 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 131 states have (on average 2.0076335877862594) internal successors, (263), 68 states have internal predecessors, (263), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 328 [2021-11-02 22:35:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:11,824 INFO L225 Difference]: With dead ends: 9510 [2021-11-02 22:35:11,824 INFO L226 Difference]: Without dead ends: 9509 [2021-11-02 22:35:11,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10440 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=16253, Invalid=40629, Unknown=0, NotChecked=0, Total=56882 [2021-11-02 22:35:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9509 states. [2021-11-02 22:35:11,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9509 to 9379. [2021-11-02 22:35:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9379 states, 8025 states have (on average 1.0216822429906542) internal successors, (8199), 8004 states have internal predecessors, (8199), 67 states have call successors, (67), 66 states have call predecessors, (67), 1284 states have return successors, (1308), 1308 states have call predecessors, (1308), 66 states have call successors, (1308) [2021-11-02 22:35:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9379 states to 9379 states and 9574 transitions. [2021-11-02 22:35:11,950 INFO L78 Accepts]: Start accepts. Automaton has 9379 states and 9574 transitions. Word has length 328 [2021-11-02 22:35:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:11,950 INFO L470 AbstractCegarLoop]: Abstraction has 9379 states and 9574 transitions. [2021-11-02 22:35:11,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 131 states have (on average 2.0076335877862594) internal successors, (263), 68 states have internal predecessors, (263), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:11,951 INFO L276 IsEmpty]: Start isEmpty. Operand 9379 states and 9574 transitions. [2021-11-02 22:35:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-02 22:35:11,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:11,959 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2021-11-02 22:35:12,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:12,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-11-02 22:35:12,165 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:35:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1849379782, now seen corresponding path program 23 times [2021-11-02 22:35:12,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:12,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127038847] [2021-11-02 22:35:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:12,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-02 22:35:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:12,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:35:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2021-11-02 22:35:13,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:13,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127038847] [2021-11-02 22:35:13,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127038847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:13,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090775735] [2021-11-02 22:35:13,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:35:13,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:35:13,945 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:35:13,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-11-02 22:35:19,420 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-11-02 22:35:19,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:35:19,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-02 22:35:19,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2021-11-02 22:35:20,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090775735] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:20,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:35:20,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2021-11-02 22:35:20,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714147238] [2021-11-02 22:35:20,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-02 22:35:20,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:20,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-02 22:35:20,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 22:35:20,655 INFO L87 Difference]: Start difference. First operand 9379 states and 9574 transitions. Second operand has 52 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 52 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-02 22:35:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:20,867 INFO L93 Difference]: Finished difference Result 9905 states and 10230 transitions. [2021-11-02 22:35:20,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-02 22:35:20,868 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 52 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 1 states have call successors, (25) Word has length 291 [2021-11-02 22:35:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:20,881 INFO L225 Difference]: With dead ends: 9905 [2021-11-02 22:35:20,881 INFO L226 Difference]: Without dead ends: 9736 [2021-11-02 22:35:20,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 314 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 22:35:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9736 states. [2021-11-02 22:35:20,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9736 to 9671. [2021-11-02 22:35:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9671 states, 8276 states have (on average 1.0209038182696955) internal successors, (8449), 8254 states have internal predecessors, (8449), 67 states have call successors, (67), 66 states have call predecessors, (67), 1325 states have return successors, (1350), 1350 states have call predecessors, (1350), 66 states have call successors, (1350) [2021-11-02 22:35:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9671 states to 9671 states and 9866 transitions. [2021-11-02 22:35:20,996 INFO L78 Accepts]: Start accepts. Automaton has 9671 states and 9866 transitions. Word has length 291 [2021-11-02 22:35:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:20,996 INFO L470 AbstractCegarLoop]: Abstraction has 9671 states and 9866 transitions. [2021-11-02 22:35:20,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 52 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-02 22:35:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9671 states and 9866 transitions. [2021-11-02 22:35:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-11-02 22:35:21,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:21,002 INFO L513 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 1, 1, 1, 1, 1] [2021-11-02 22:35:21,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-11-02 22:35:21,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:21,202 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:35:21,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash 597601077, now seen corresponding path program 65 times [2021-11-02 22:35:21,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:21,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98403099] [2021-11-02 22:35:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:21,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10660 backedges. 0 proven. 10660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:27,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:27,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98403099] [2021-11-02 22:35:27,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98403099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:27,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891368123] [2021-11-02 22:35:27,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:35:27,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:27,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:35:27,071 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:35:27,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-11-02 22:35:32,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-11-02 22:35:32,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:35:32,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 134 conjunts are in the unsatisfiable core [2021-11-02 22:35:32,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10660 backedges. 0 proven. 10660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:33,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891368123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:33,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:35:33,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2021-11-02 22:35:33,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956565985] [2021-11-02 22:35:33,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2021-11-02 22:35:33,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:33,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-11-02 22:35:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4557, Invalid=13533, Unknown=0, NotChecked=0, Total=18090 [2021-11-02 22:35:33,684 INFO L87 Difference]: Start difference. First operand 9671 states and 9866 transitions. Second operand has 135 states, 133 states have (on average 2.007518796992481) internal successors, (267), 69 states have internal predecessors, (267), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:40,172 INFO L93 Difference]: Finished difference Result 9983 states and 10049 transitions. [2021-11-02 22:35:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2021-11-02 22:35:40,173 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 133 states have (on average 2.007518796992481) internal successors, (267), 69 states have internal predecessors, (267), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 333 [2021-11-02 22:35:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:40,185 INFO L225 Difference]: With dead ends: 9983 [2021-11-02 22:35:40,185 INFO L226 Difference]: Without dead ends: 9982 [2021-11-02 22:35:40,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10675 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=16627, Invalid=41695, Unknown=0, NotChecked=0, Total=58322 [2021-11-02 22:35:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9982 states. [2021-11-02 22:35:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9982 to 9850. [2021-11-02 22:35:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9850 states, 8429 states have (on average 1.0208802942223276) internal successors, (8605), 8407 states have internal predecessors, (8605), 68 states have call successors, (68), 67 states have call predecessors, (68), 1350 states have return successors, (1375), 1375 states have call predecessors, (1375), 67 states have call successors, (1375) [2021-11-02 22:35:40,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9850 states to 9850 states and 10048 transitions. [2021-11-02 22:35:40,300 INFO L78 Accepts]: Start accepts. Automaton has 9850 states and 10048 transitions. Word has length 333 [2021-11-02 22:35:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:40,301 INFO L470 AbstractCegarLoop]: Abstraction has 9850 states and 10048 transitions. [2021-11-02 22:35:40,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 133 states have (on average 2.007518796992481) internal successors, (267), 69 states have internal predecessors, (267), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:35:40,301 INFO L276 IsEmpty]: Start isEmpty. Operand 9850 states and 10048 transitions. [2021-11-02 22:35:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-02 22:35:40,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:40,306 INFO L513 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 1, 1, 1, 1, 1] [2021-11-02 22:35:40,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-11-02 22:35:40,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:40,507 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:35:40,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1708285321, now seen corresponding path program 66 times [2021-11-02 22:35:40,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:40,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985580770] [2021-11-02 22:35:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:40,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10989 backedges. 0 proven. 10989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:46,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:46,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985580770] [2021-11-02 22:35:46,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985580770] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:46,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368477204] [2021-11-02 22:35:46,192 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:35:46,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:46,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:35:46,195 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:35:46,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-11-02 22:35:52,011 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 65 check-sat command(s) [2021-11-02 22:35:52,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:35:52,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 157 conjunts are in the unsatisfiable core [2021-11-02 22:35:52,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:23,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2021-11-02 22:36:23,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:36:23,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2021-11-02 22:36:23,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716804900] [2021-11-02 22:36:23,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2021-11-02 22:36:23,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:23,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2021-11-02 22:36:23,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12874, Invalid=39796, Unknown=0, NotChecked=0, Total=52670 [2021-11-02 22:36:23,553 INFO L87 Difference]: Start difference. First operand 9850 states and 10048 transitions. Second operand has 137 states, 135 states have (on average 2.0074074074074075) internal successors, (271), 70 states have internal predecessors, (271), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:31,687 INFO L93 Difference]: Finished difference Result 10164 states and 10231 transitions. [2021-11-02 22:36:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2021-11-02 22:36:31,687 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 135 states have (on average 2.0074074074074075) internal successors, (271), 70 states have internal predecessors, (271), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2021-11-02 22:36:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:31,700 INFO L225 Difference]: With dead ends: 10164 [2021-11-02 22:36:31,700 INFO L226 Difference]: Without dead ends: 10163 [2021-11-02 22:36:31,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41920 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=25382, Invalid=89200, Unknown=0, NotChecked=0, Total=114582 [2021-11-02 22:36:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2021-11-02 22:36:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10029. [2021-11-02 22:36:31,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10029 states, 8582 states have (on average 1.020857608948963) internal successors, (8761), 8560 states have internal predecessors, (8761), 69 states have call successors, (69), 68 states have call predecessors, (69), 1375 states have return successors, (1400), 1400 states have call predecessors, (1400), 68 states have call successors, (1400) [2021-11-02 22:36:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10029 states to 10029 states and 10230 transitions. [2021-11-02 22:36:31,818 INFO L78 Accepts]: Start accepts. Automaton has 10029 states and 10230 transitions. Word has length 338 [2021-11-02 22:36:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:31,819 INFO L470 AbstractCegarLoop]: Abstraction has 10029 states and 10230 transitions. [2021-11-02 22:36:31,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 135 states have (on average 2.0074074074074075) internal successors, (271), 70 states have internal predecessors, (271), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 10029 states and 10230 transitions. [2021-11-02 22:36:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-02 22:36:31,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:31,825 INFO L513 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 1, 1, 1, 1, 1] [2021-11-02 22:36:31,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-11-02 22:36:32,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cfe74c3-d0aa-4c3a-9efb-3c215f3fd443/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2021-11-02 22:36:32,025 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-02 22:36:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:32,026 INFO L85 PathProgramCache]: Analyzing trace with hash -100604811, now seen corresponding path program 67 times [2021-11-02 22:36:32,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:32,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598073863] [2021-11-02 22:36:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:32,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat