./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg --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 63d04d5fbdccf2f819812182b810f1f191af60a43091410d38a30548a516f60e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:50:36,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:50:36,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:50:37,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:50:37,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:50:37,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:50:37,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:50:37,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:50:37,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:50:37,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:50:37,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:50:37,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:50:37,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:50:37,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:50:37,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:50:37,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:50:37,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:50:37,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:50:37,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:50:37,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:50:37,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:50:37,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:50:37,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:50:37,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:50:37,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:50:37,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:50:37,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:50:37,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:50:37,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:50:37,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:50:37,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:50:37,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:50:37,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:50:37,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:50:37,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:50:37,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:50:37,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:50:37,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:50:37,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:50:37,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:50:37,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:50:37,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-28 08:50:37,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:50:37,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:50:37,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:50:37,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:50:37,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:50:37,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:50:37,121 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:50:37,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:50:37,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:50:37,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:50:37,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:50:37,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:50:37,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:50:37,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:50:37,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:50:37,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:50:37,125 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-28 08:50:37,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:50:37,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:50:37,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:50:37,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:50:37,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:50:37,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:50:37,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:50:37,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:50:37,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:50:37,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:50:37,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:50:37,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:50:37,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:50:37,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:50:37,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:50:37,130 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_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d04d5fbdccf2f819812182b810f1f191af60a43091410d38a30548a516f60e [2021-10-28 08:50:37,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:50:37,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:50:37,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:50:37,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:50:37,408 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:50:37,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/bitvector/gcd_4.c [2021-10-28 08:50:37,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/data/aaa270b6c/6eb65412a5484ed09d3727c9e47bd7e2/FLAGbf40b0ed9 [2021-10-28 08:50:38,096 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:50:38,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/sv-benchmarks/c/bitvector/gcd_4.c [2021-10-28 08:50:38,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/data/aaa270b6c/6eb65412a5484ed09d3727c9e47bd7e2/FLAGbf40b0ed9 [2021-10-28 08:50:38,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/data/aaa270b6c/6eb65412a5484ed09d3727c9e47bd7e2 [2021-10-28 08:50:38,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:50:38,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:50:38,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:50:38,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:50:38,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:50:38,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320c3b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38, skipping insertion in model container [2021-10-28 08:50:38,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:50:38,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:50:38,686 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_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/sv-benchmarks/c/bitvector/gcd_4.c[357,370] [2021-10-28 08:50:38,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:50:38,715 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:50:38,727 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_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/sv-benchmarks/c/bitvector/gcd_4.c[357,370] [2021-10-28 08:50:38,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:50:38,747 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:50:38,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38 WrapperNode [2021-10-28 08:50:38,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:50:38,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:50:38,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:50:38,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:50:38,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:50:38,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:50:38,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:50:38,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:50:38,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:50:38,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:50:38,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:50:38,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:50:38,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (1/1) ... [2021-10-28 08:50:38,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:50:38,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:50:38,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:50:38,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:50:38,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:50:38,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:50:38,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:50:38,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:50:39,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:50:39,148 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-28 08:50:39,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:50:39 BoogieIcfgContainer [2021-10-28 08:50:39,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:50:39,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:50:39,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:50:39,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:50:39,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:50:38" (1/3) ... [2021-10-28 08:50:39,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408c2cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:50:39, skipping insertion in model container [2021-10-28 08:50:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:50:38" (2/3) ... [2021-10-28 08:50:39,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408c2cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:50:39, skipping insertion in model container [2021-10-28 08:50:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:50:39" (3/3) ... [2021-10-28 08:50:39,160 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2021-10-28 08:50:39,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:50:39,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-28 08:50:39,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:50:39,228 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 [2021-10-28 08:50:39,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-28 08:50:39,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 08:50:39,250 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:39,251 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 08:50:39,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:39,259 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-28 08:50:39,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:39,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119123028] [2021-10-28 08:50:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:39,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:39,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:39,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119123028] [2021-10-28 08:50:39,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119123028] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:50:39,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:50:39,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:50:39,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451052695] [2021-10-28 08:50:39,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:50:39,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:50:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:50:39,518 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:39,643 INFO L93 Difference]: Finished difference Result 91 states and 111 transitions. [2021-10-28 08:50:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:50:39,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-28 08:50:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:39,657 INFO L225 Difference]: With dead ends: 91 [2021-10-28 08:50:39,658 INFO L226 Difference]: Without dead ends: 29 [2021-10-28 08:50:39,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:50:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-28 08:50:39,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2021-10-28 08:50:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-28 08:50:39,704 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2021-10-28 08:50:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:39,705 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-28 08:50:39,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-28 08:50:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 08:50:39,707 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:39,707 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 08:50:39,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:50:39,708 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:39,713 INFO L85 PathProgramCache]: Analyzing trace with hash 28699785, now seen corresponding path program 1 times [2021-10-28 08:50:39,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:39,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624544913] [2021-10-28 08:50:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:39,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:39,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:39,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624544913] [2021-10-28 08:50:39,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624544913] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:50:39,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:50:39,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:50:39,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10689157] [2021-10-28 08:50:39,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:50:39,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:39,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:50:39,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:50:39,814 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:39,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:39,877 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-10-28 08:50:39,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:50:39,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-28 08:50:39,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:39,881 INFO L225 Difference]: With dead ends: 40 [2021-10-28 08:50:39,882 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 08:50:39,883 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:50:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 08:50:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2021-10-28 08:50:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-28 08:50:39,892 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-10-28 08:50:39,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:39,892 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-28 08:50:39,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:39,893 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-28 08:50:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:50:39,894 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:39,895 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:50:39,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:50:39,898 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:39,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:39,901 INFO L85 PathProgramCache]: Analyzing trace with hash 302707703, now seen corresponding path program 1 times [2021-10-28 08:50:39,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:39,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749684161] [2021-10-28 08:50:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:39,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:39,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:39,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749684161] [2021-10-28 08:50:39,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749684161] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:50:39,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:50:39,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:50:39,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248959054] [2021-10-28 08:50:39,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:50:39,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:50:40,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:50:40,000 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:40,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:40,052 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-10-28 08:50:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:50:40,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 08:50:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:40,056 INFO L225 Difference]: With dead ends: 30 [2021-10-28 08:50:40,057 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 08:50:40,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:50:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 08:50:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2021-10-28 08:50:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-28 08:50:40,067 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2021-10-28 08:50:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:40,067 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-28 08:50:40,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-28 08:50:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:50:40,069 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:40,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:50:40,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:50:40,070 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:40,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:40,071 INFO L85 PathProgramCache]: Analyzing trace with hash 302707895, now seen corresponding path program 1 times [2021-10-28 08:50:40,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:40,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601449962] [2021-10-28 08:50:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:40,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:40,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:40,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601449962] [2021-10-28 08:50:40,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601449962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:50:40,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:50:40,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:50:40,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966245652] [2021-10-28 08:50:40,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:50:40,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:50:40,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:50:40,169 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:40,212 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-10-28 08:50:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:50:40,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 08:50:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:40,216 INFO L225 Difference]: With dead ends: 33 [2021-10-28 08:50:40,216 INFO L226 Difference]: Without dead ends: 19 [2021-10-28 08:50:40,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:50:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-28 08:50:40,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-28 08:50:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-28 08:50:40,232 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 8 [2021-10-28 08:50:40,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:40,233 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-28 08:50:40,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-10-28 08:50:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:50:40,235 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:40,236 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:50:40,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:50:40,238 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:40,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1796493298, now seen corresponding path program 1 times [2021-10-28 08:50:40,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:40,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853029178] [2021-10-28 08:50:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:40,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:40,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:40,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853029178] [2021-10-28 08:50:40,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853029178] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:50:40,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400819860] [2021-10-28 08:50:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:40,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:40,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:50:40,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:50:40,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:50:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:40,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:50:40,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:50:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:40,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400819860] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:50:40,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:50:40,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-28 08:50:40,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887313543] [2021-10-28 08:50:40,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:50:40,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:50:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:50:40,583 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:40,630 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-10-28 08:50:40,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:50:40,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 08:50:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:40,632 INFO L225 Difference]: With dead ends: 29 [2021-10-28 08:50:40,632 INFO L226 Difference]: Without dead ends: 27 [2021-10-28 08:50:40,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:50:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-28 08:50:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-28 08:50:40,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.380952380952381) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-28 08:50:40,643 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 12 [2021-10-28 08:50:40,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:40,644 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-28 08:50:40,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:40,644 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-10-28 08:50:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:50:40,645 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:40,645 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:50:40,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 08:50:40,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:40,862 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1796493490, now seen corresponding path program 1 times [2021-10-28 08:50:40,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:40,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847839405] [2021-10-28 08:50:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:40,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:40,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:40,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847839405] [2021-10-28 08:50:40,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847839405] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:50:40,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909483998] [2021-10-28 08:50:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:40,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:40,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:50:40,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:50:40,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:50:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:41,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:50:41,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:50:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:41,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909483998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:50:41,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:50:41,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-28 08:50:41,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034453484] [2021-10-28 08:50:41,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:50:41,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:41,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:50:41,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:50:41,167 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:41,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:41,249 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-10-28 08:50:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:50:41,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 08:50:41,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:41,250 INFO L225 Difference]: With dead ends: 44 [2021-10-28 08:50:41,251 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 08:50:41,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:50:41,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 08:50:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-28 08:50:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.25) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-28 08:50:41,260 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 12 [2021-10-28 08:50:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:41,260 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-28 08:50:41,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-10-28 08:50:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:50:41,262 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:41,262 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:50:41,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:50:41,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:41,478 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash 442525736, now seen corresponding path program 2 times [2021-10-28 08:50:41,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:41,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466373674] [2021-10-28 08:50:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:41,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 08:50:41,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:41,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466373674] [2021-10-28 08:50:41,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466373674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:50:41,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483993311] [2021-10-28 08:50:41,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:50:41,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:41,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:50:41,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:50:41,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 08:50:41,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:50:41,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:50:41,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:50:41,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:50:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-28 08:50:41,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483993311] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:50:41,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:50:41,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-10-28 08:50:41,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174069767] [2021-10-28 08:50:41,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:50:41,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:50:41,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:50:41,810 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:41,849 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-10-28 08:50:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:50:41,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 08:50:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:41,851 INFO L225 Difference]: With dead ends: 31 [2021-10-28 08:50:41,851 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 08:50:41,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:50:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 08:50:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-10-28 08:50:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-28 08:50:41,855 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2021-10-28 08:50:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:41,855 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-28 08:50:41,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-10-28 08:50:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 08:50:41,857 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:41,857 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:50:41,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-28 08:50:42,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:42,070 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash 620020322, now seen corresponding path program 1 times [2021-10-28 08:50:42,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:42,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837643235] [2021-10-28 08:50:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:42,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:42,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:42,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837643235] [2021-10-28 08:50:42,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837643235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:50:42,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477099232] [2021-10-28 08:50:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:42,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:42,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:50:42,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:50:42,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 08:50:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:42,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:50:42,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:50:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:42,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477099232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:50:42,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:50:42,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-28 08:50:42,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062213869] [2021-10-28 08:50:42,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:50:42,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:42,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:50:42,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:50:42,468 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:42,540 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2021-10-28 08:50:42,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:50:42,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 08:50:42,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:42,541 INFO L225 Difference]: With dead ends: 41 [2021-10-28 08:50:42,542 INFO L226 Difference]: Without dead ends: 31 [2021-10-28 08:50:42,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:50:42,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-28 08:50:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-10-28 08:50:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-28 08:50:42,557 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 20 [2021-10-28 08:50:42,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:42,558 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-28 08:50:42,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-28 08:50:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:50:42,559 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:42,559 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:50:42,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:50:42,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:42,782 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:42,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1505428003, now seen corresponding path program 2 times [2021-10-28 08:50:42,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:42,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151161477] [2021-10-28 08:50:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:42,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:42,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:42,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151161477] [2021-10-28 08:50:42,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151161477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:50:42,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417149988] [2021-10-28 08:50:42,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:50:42,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:42,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:50:42,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:50:42,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 08:50:42,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:50:42,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:50:42,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:50:42,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:50:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:50:43,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417149988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:50:43,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:50:43,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-10-28 08:50:43,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884949463] [2021-10-28 08:50:43,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 08:50:43,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:43,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 08:50:43,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:50:43,239 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:43,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:43,432 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2021-10-28 08:50:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:50:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 08:50:43,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:43,434 INFO L225 Difference]: With dead ends: 50 [2021-10-28 08:50:43,434 INFO L226 Difference]: Without dead ends: 36 [2021-10-28 08:50:43,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:50:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-28 08:50:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-10-28 08:50:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-28 08:50:43,440 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 24 [2021-10-28 08:50:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:43,441 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-28 08:50:43,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-28 08:50:43,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 08:50:43,443 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:50:43,443 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 08:50:43,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:50:43,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:43,670 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-28 08:50:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:50:43,670 INFO L85 PathProgramCache]: Analyzing trace with hash 570443853, now seen corresponding path program 3 times [2021-10-28 08:50:43,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:50:43,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682486978] [2021-10-28 08:50:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:50:43,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:50:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:50:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 08:50:43,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:50:43,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682486978] [2021-10-28 08:50:43,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682486978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:50:43,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049269482] [2021-10-28 08:50:43,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:50:43,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:50:43,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:50:43,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:50:43,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 08:50:43,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 08:50:43,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:50:43,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:50:43,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:50:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 08:50:44,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049269482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:50:44,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:50:44,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2021-10-28 08:50:44,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133002431] [2021-10-28 08:50:44,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:50:44,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:50:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:50:44,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:50:44,078 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:50:44,115 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-28 08:50:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:50:44,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-28 08:50:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:50:44,119 INFO L225 Difference]: With dead ends: 35 [2021-10-28 08:50:44,119 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:50:44,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:50:44,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:50:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:50:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:50:44,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-28 08:50:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:50:44,126 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:50:44,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:50:44,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:50:44,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:50:44,132 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:50:44,133 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:50:44,134 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:50:44,134 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:50:44,134 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:50:44,145 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:50:44,146 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:50:44,146 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:50:44,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:50:44,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 08:50:44,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 08:50:44,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:50:44,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:50:44,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:50:44,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:50:44,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:50:44,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:50:44,401 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-28 08:50:44,401 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-28 08:50:44,401 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-28 08:50:44,401 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-28 08:50:44,402 INFO L857 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-10-28 08:50:44,402 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 13 29) no Hoare annotation was computed. [2021-10-28 08:50:44,402 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-28 08:50:44,402 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-28 08:50:44,402 INFO L860 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2021-10-28 08:50:44,403 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-28 08:50:44,403 INFO L860 garLoopResultBuilder]: At program point L7-5(lines 6 11) the Hoare annotation is: true [2021-10-28 08:50:44,403 INFO L857 garLoopResultBuilder]: For program point L7-6(lines 7 9) no Hoare annotation was computed. [2021-10-28 08:50:44,403 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 08:50:44,403 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-28 08:50:44,404 INFO L860 garLoopResultBuilder]: At program point L7-8(lines 6 11) the Hoare annotation is: true [2021-10-28 08:50:44,404 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 08:50:44,404 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-28 08:50:44,404 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 08:50:44,404 INFO L860 garLoopResultBuilder]: At program point L28(lines 12 29) the Hoare annotation is: true [2021-10-28 08:50:44,405 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-28 08:50:44,405 INFO L857 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-10-28 08:50:44,405 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-28 08:50:44,405 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-28 08:50:44,405 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 08:50:44,409 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-28 08:50:44,409 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-28 08:50:44,409 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-28 08:50:44,410 INFO L857 garLoopResultBuilder]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2021-10-28 08:50:44,410 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-28 08:50:44,410 INFO L857 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2021-10-28 08:50:44,410 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (<= ULTIMATE.start_gcd_test_~b 18) (<= 0 ULTIMATE.start_gcd_test_~b) (<= ULTIMATE.start_gcd_test_~a 2147483647) (< 0 ULTIMATE.start_gcd_test_~a)) [2021-10-28 08:50:44,411 INFO L860 garLoopResultBuilder]: At program point L47(lines 32 48) the Hoare annotation is: true [2021-10-28 08:50:44,411 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-28 08:50:44,411 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-28 08:50:44,411 INFO L857 garLoopResultBuilder]: For program point L14-2(line 14) no Hoare annotation was computed. [2021-10-28 08:50:44,411 INFO L857 garLoopResultBuilder]: For program point L14-4(lines 13 29) no Hoare annotation was computed. [2021-10-28 08:50:44,412 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-28 08:50:44,415 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2021-10-28 08:50:44,417 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:50:44,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:50:44 BoogieIcfgContainer [2021-10-28 08:50:44,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:50:44,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:50:44,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:50:44,433 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:50:44,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:50:39" (3/4) ... [2021-10-28 08:50:44,436 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:50:44,447 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-28 08:50:44,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-28 08:50:44,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:50:44,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:50:44,490 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:50:44,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:50:44,491 INFO L168 Benchmark]: Toolchain (without parser) took 6015.43 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 107.2 MB in the beginning and 119.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:50:44,492 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:50:44,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.09 ms. Allocated memory is still 140.5 MB. Free memory was 106.9 MB in the beginning and 116.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:50:44,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 140.5 MB. Free memory was 116.1 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:50:44,493 INFO L168 Benchmark]: Boogie Preprocessor took 24.42 ms. Allocated memory is still 140.5 MB. Free memory was 114.4 MB in the beginning and 113.6 MB in the end (delta: 786.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:50:44,494 INFO L168 Benchmark]: RCFGBuilder took 334.88 ms. Allocated memory is still 140.5 MB. Free memory was 113.5 MB in the beginning and 102.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:50:44,494 INFO L168 Benchmark]: TraceAbstraction took 5280.06 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 102.3 MB in the beginning and 121.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:50:44,495 INFO L168 Benchmark]: Witness Printer took 57.45 ms. Allocated memory is still 169.9 MB. Free memory was 121.8 MB in the beginning and 119.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:50:44,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.09 ms. Allocated memory is still 140.5 MB. Free memory was 106.9 MB in the beginning and 116.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.22 ms. Allocated memory is still 140.5 MB. Free memory was 116.1 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.42 ms. Allocated memory is still 140.5 MB. Free memory was 114.4 MB in the beginning and 113.6 MB in the end (delta: 786.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 334.88 ms. Allocated memory is still 140.5 MB. Free memory was 113.5 MB in the beginning and 102.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5280.06 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 102.3 MB in the beginning and 121.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 57.45 ms. Allocated memory is still 169.9 MB. Free memory was 121.8 MB in the beginning and 119.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 164 SDslu, 38 SDs, 0 SdLazy, 440 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 37 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 23 NumberOfFragments, 18 HoareAnnotationTreeSize, 6 FomulaSimplifications, 225 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 265 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 249 ConstructedInterpolants, 0 QuantifiedInterpolants, 1293 SizeOfPredicates, 20 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 126/256 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((b <= 18 && 0 <= b) && a <= 2147483647) && 0 < a RESULT: Ultimate proved your program to be correct! [2021-10-28 08:50:44,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9cebe9d-a0de-4e93-a2d3-60e8e159b283/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...