./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:18:21,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:18:21,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:18:21,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:18:21,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:18:21,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:18:21,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:18:21,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:18:21,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:18:21,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:18:21,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:18:21,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:18:21,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:18:21,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:18:21,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:18:21,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:18:21,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:18:21,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:18:21,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:18:21,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:18:21,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:18:21,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:18:21,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:18:21,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:18:21,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:18:21,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:18:21,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:18:21,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:18:21,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:18:21,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:18:21,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:18:21,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:18:21,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:18:21,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:18:21,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:18:21,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:18:21,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:18:21,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:18:21,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:18:21,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:18:21,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:18:21,852 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 01:18:21,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:18:21,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:18:21,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:18:21,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:18:21,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:18:21,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:18:21,895 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:18:21,895 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:18:21,895 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:18:21,895 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:18:21,896 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:18:21,897 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:18:21,897 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:18:21,897 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:18:21,897 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:18:21,897 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:18:21,898 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:18:21,898 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:18:21,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:18:21,898 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:18:21,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:18:21,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:18:21,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:18:21,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:18:21,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:18:21,900 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:18:21,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:18:21,900 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:18:21,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:18:21,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:18:21,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:18:21,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:18:21,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:18:21,901 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:18:21,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:18:21,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:18:21,902 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:18:21,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:18:21,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:18:21,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:18:21,902 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_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f [2022-11-22 01:18:22,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:18:22,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:18:22,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:18:22,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:18:22,196 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:18:22,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2022-11-22 01:18:25,213 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:18:25,507 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:18:25,508 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2022-11-22 01:18:25,513 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/data/1d52059e7/78a3c20204fd433c984ed32707cdad01/FLAGecdb6f7d5 [2022-11-22 01:18:25,529 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/data/1d52059e7/78a3c20204fd433c984ed32707cdad01 [2022-11-22 01:18:25,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:18:25,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:18:25,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:18:25,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:18:25,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:18:25,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52161a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25, skipping insertion in model container [2022-11-22 01:18:25,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:18:25,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:18:25,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:18:25,714 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:18:25,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:18:25,742 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:18:25,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25 WrapperNode [2022-11-22 01:18:25,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:18:25,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:18:25,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:18:25,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:18:25,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,769 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-11-22 01:18:25,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:18:25,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:18:25,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:18:25,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:18:25,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:18:25,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:18:25,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:18:25,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:18:25,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (1/1) ... [2022-11-22 01:18:25,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:18:25,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:25,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:18:25,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:18:25,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:18:25,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:18:25,945 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:18:25,947 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:18:26,084 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:18:26,098 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:18:26,098 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:18:26,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:18:26 BoogieIcfgContainer [2022-11-22 01:18:26,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:18:26,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:18:26,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:18:26,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:18:26,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:18:25" (1/3) ... [2022-11-22 01:18:26,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af1109f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:18:26, skipping insertion in model container [2022-11-22 01:18:26,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:25" (2/3) ... [2022-11-22 01:18:26,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af1109f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:18:26, skipping insertion in model container [2022-11-22 01:18:26,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:18:26" (3/3) ... [2022-11-22 01:18:26,110 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2022-11-22 01:18:26,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:18:26,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 01:18:26,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:18:26,205 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35cb62a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:18:26,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 01:18:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 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) [2022-11-22 01:18:26,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:18:26,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:26,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:18:26,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2022-11-22 01:18:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:26,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238462696] [2022-11-22 01:18:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:26,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:26,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:26,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238462696] [2022-11-22 01:18:26,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238462696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:18:26,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:18:26,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:18:26,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14301657] [2022-11-22 01:18:26,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:18:26,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:18:26,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:26,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:18:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:18:26,451 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 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) Second operand has 3 states, 2 states have (on average 2.5) 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) [2022-11-22 01:18:26,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:26,504 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-22 01:18:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:18:26,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2022-11-22 01:18:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:26,515 INFO L225 Difference]: With dead ends: 32 [2022-11-22 01:18:26,515 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 01:18:26,518 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:18:26,521 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:26,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:18:26,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 01:18:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-22 01:18:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-22 01:18:26,555 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2022-11-22 01:18:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:26,556 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-22 01:18:26,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2022-11-22 01:18:26,556 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-22 01:18:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:18:26,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:26,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:18:26,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:18:26,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:26,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2022-11-22 01:18:26,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:26,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409824200] [2022-11-22 01:18:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:26,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:26,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:26,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409824200] [2022-11-22 01:18:26,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409824200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:18:26,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:18:26,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:18:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574836777] [2022-11-22 01:18:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:18:26,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:18:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:26,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:18:26,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:18:26,606 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:26,636 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-22 01:18:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:18:26,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-22 01:18:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:26,638 INFO L225 Difference]: With dead ends: 40 [2022-11-22 01:18:26,638 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:18:26,639 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:18:26,640 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:26,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:18:26,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:18:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-22 01:18:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 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) [2022-11-22 01:18:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-11-22 01:18:26,647 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2022-11-22 01:18:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:26,648 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-11-22 01:18:26,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-11-22 01:18:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:18:26,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:26,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:18:26,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:18:26,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:26,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2022-11-22 01:18:26,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:26,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041423189] [2022-11-22 01:18:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:26,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:26,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:26,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041423189] [2022-11-22 01:18:26,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041423189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:18:26,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:18:26,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:18:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255139283] [2022-11-22 01:18:26,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:18:26,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:18:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:26,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:18:26,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:18:26,703 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:26,736 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-22 01:18:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:18:26,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-22 01:18:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:26,739 INFO L225 Difference]: With dead ends: 42 [2022-11-22 01:18:26,739 INFO L226 Difference]: Without dead ends: 41 [2022-11-22 01:18:26,739 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:18:26,741 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:26,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:18:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-22 01:18:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2022-11-22 01:18:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2022-11-22 01:18:26,749 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 7 [2022-11-22 01:18:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:26,750 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2022-11-22 01:18:26,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2022-11-22 01:18:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:18:26,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:26,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:18:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:18:26,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2022-11-22 01:18:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:26,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661185731] [2022-11-22 01:18:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:26,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:26,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:26,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661185731] [2022-11-22 01:18:26,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661185731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:18:26,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:18:26,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:18:26,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903964618] [2022-11-22 01:18:26,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:18:26,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:18:26,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:26,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:18:26,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:18:26,800 INFO L87 Difference]: Start difference. First operand 39 states and 50 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) [2022-11-22 01:18:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:26,813 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-11-22 01:18:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:18:26,814 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 [2022-11-22 01:18:26,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:26,815 INFO L225 Difference]: With dead ends: 39 [2022-11-22 01:18:26,815 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:18:26,815 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:18:26,817 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:26,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:18:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:18:26,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-22 01:18:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 37 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) [2022-11-22 01:18:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-22 01:18:26,825 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 8 [2022-11-22 01:18:26,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:26,826 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-22 01:18:26,826 INFO L496 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) [2022-11-22 01:18:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-22 01:18:26,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:18:26,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:26,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:18:26,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:18:26,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2026065806, now seen corresponding path program 1 times [2022-11-22 01:18:26,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:26,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369782676] [2022-11-22 01:18:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:26,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:26,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:26,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369782676] [2022-11-22 01:18:26,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369782676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:26,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316169498] [2022-11-22 01:18:26,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:26,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:26,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:27,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:27,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:18:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:27,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:18:27,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:27,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:27,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316169498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:27,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1874953007] [2022-11-22 01:18:27,175 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:27,178 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:27,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:27,187 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:27,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:27,595 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:27,978 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '418#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:27,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:27,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:27,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 01:18:27,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824051106] [2022-11-22 01:18:27,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:27,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:18:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:18:27,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:18:27,981 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2022-11-22 01:18:28,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:28,087 INFO L93 Difference]: Finished difference Result 97 states and 134 transitions. [2022-11-22 01:18:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:18:28,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) Word has length 11 [2022-11-22 01:18:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:28,119 INFO L225 Difference]: With dead ends: 97 [2022-11-22 01:18:28,119 INFO L226 Difference]: Without dead ends: 95 [2022-11-22 01:18:28,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:18:28,121 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:28,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:18:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-22 01:18:28,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2022-11-22 01:18:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 77 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2022-11-22 01:18:28,142 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 11 [2022-11-22 01:18:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:28,146 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2022-11-22 01:18:28,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2022-11-22 01:18:28,147 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2022-11-22 01:18:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:18:28,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:28,147 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:18:28,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:28,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:28,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:28,359 INFO L85 PathProgramCache]: Analyzing trace with hash -974279381, now seen corresponding path program 1 times [2022-11-22 01:18:28,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:28,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736963826] [2022-11-22 01:18:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:28,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:28,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:28,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736963826] [2022-11-22 01:18:28,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736963826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:28,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621532861] [2022-11-22 01:18:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:28,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:28,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:28,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:28,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:18:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:28,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:18:28,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:28,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:28,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621532861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:28,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1976794720] [2022-11-22 01:18:28,551 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:18:28,552 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:28,552 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:28,552 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:28,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:28,704 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:28,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1976794720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:18:28,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:28,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 12 [2022-11-22 01:18:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329974862] [2022-11-22 01:18:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:18:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:18:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:18:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:18:28,996 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:29,342 INFO L93 Difference]: Finished difference Result 103 states and 129 transitions. [2022-11-22 01:18:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:18:29,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 [2022-11-22 01:18:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:29,344 INFO L225 Difference]: With dead ends: 103 [2022-11-22 01:18:29,344 INFO L226 Difference]: Without dead ends: 102 [2022-11-22 01:18:29,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:18:29,346 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:29,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 12 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:18:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-22 01:18:29,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2022-11-22 01:18:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.4) internal successors, (119), 89 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 119 transitions. [2022-11-22 01:18:29,359 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 119 transitions. Word has length 12 [2022-11-22 01:18:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:29,359 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 119 transitions. [2022-11-22 01:18:29,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 119 transitions. [2022-11-22 01:18:29,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:18:29,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:29,361 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 01:18:29,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:29,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:29,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:29,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:29,576 INFO L85 PathProgramCache]: Analyzing trace with hash -974273423, now seen corresponding path program 1 times [2022-11-22 01:18:29,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:29,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587907471] [2022-11-22 01:18:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:29,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:29,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:29,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587907471] [2022-11-22 01:18:29,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587907471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:29,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158049191] [2022-11-22 01:18:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:29,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:29,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:29,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:29,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:18:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:29,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:18:29,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:29,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:29,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158049191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:29,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2124992682] [2022-11-22 01:18:29,761 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:29,762 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:29,762 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:29,762 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:29,763 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:29,857 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:30,067 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '998#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:30,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:30,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:30,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 01:18:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609981851] [2022-11-22 01:18:30,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:30,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:18:30,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:30,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:18:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:18:30,069 INFO L87 Difference]: Start difference. First operand 90 states and 119 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2022-11-22 01:18:30,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:30,142 INFO L93 Difference]: Finished difference Result 242 states and 342 transitions. [2022-11-22 01:18:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:18:30,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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 [2022-11-22 01:18:30,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:30,147 INFO L225 Difference]: With dead ends: 242 [2022-11-22 01:18:30,147 INFO L226 Difference]: Without dead ends: 240 [2022-11-22 01:18:30,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:18:30,150 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:30,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:18:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-22 01:18:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 196. [2022-11-22 01:18:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.3717277486910995) internal successors, (262), 195 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:30,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 262 transitions. [2022-11-22 01:18:30,180 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 262 transitions. Word has length 12 [2022-11-22 01:18:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:30,181 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 262 transitions. [2022-11-22 01:18:30,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2022-11-22 01:18:30,181 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 262 transitions. [2022-11-22 01:18:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:18:30,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:30,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:18:30,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:30,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:30,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1429056119, now seen corresponding path program 1 times [2022-11-22 01:18:30,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:30,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115681994] [2022-11-22 01:18:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:30,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:30,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:30,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115681994] [2022-11-22 01:18:30,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115681994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:30,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968299557] [2022-11-22 01:18:30,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:30,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:30,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:30,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:30,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:18:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:30,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:18:30,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:30,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:30,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968299557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:30,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1194224883] [2022-11-22 01:18:30,545 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:30,545 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:30,545 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:30,546 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:30,546 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:30,676 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:30,954 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1581#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:30,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:30,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:30,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 01:18:30,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932968334] [2022-11-22 01:18:30,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:30,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:18:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:18:30,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:18:30,956 INFO L87 Difference]: Start difference. First operand 196 states and 262 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:30,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:30,997 INFO L93 Difference]: Finished difference Result 316 states and 420 transitions. [2022-11-22 01:18:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:18:30,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 13 [2022-11-22 01:18:30,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:30,999 INFO L225 Difference]: With dead ends: 316 [2022-11-22 01:18:30,999 INFO L226 Difference]: Without dead ends: 315 [2022-11-22 01:18:31,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:18:31,000 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:31,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 44 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:18:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-22 01:18:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-11-22 01:18:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 310 states have (on average 1.2741935483870968) internal successors, (395), 314 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 395 transitions. [2022-11-22 01:18:31,019 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 395 transitions. Word has length 13 [2022-11-22 01:18:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:31,020 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 395 transitions. [2022-11-22 01:18:31,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 395 transitions. [2022-11-22 01:18:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 01:18:31,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:31,022 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2022-11-22 01:18:31,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:31,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:31,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:31,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:31,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2043316153, now seen corresponding path program 2 times [2022-11-22 01:18:31,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:31,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221345853] [2022-11-22 01:18:31,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:31,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:31,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:31,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221345853] [2022-11-22 01:18:31,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221345853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:31,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825700643] [2022-11-22 01:18:31,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:18:31,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:31,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:31,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:31,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:18:31,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 01:18:31,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:18:31,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:18:31,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:31,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:31,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825700643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:31,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [49744448] [2022-11-22 01:18:31,530 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:31,530 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:31,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:31,530 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:31,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:31,642 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:31,952 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2484#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:31,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:31,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:31,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-22 01:18:31,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351329242] [2022-11-22 01:18:31,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:31,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:18:31,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:31,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:18:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:18:31,954 INFO L87 Difference]: Start difference. First operand 315 states and 395 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:32,082 INFO L93 Difference]: Finished difference Result 718 states and 984 transitions. [2022-11-22 01:18:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:18:32,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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 29 [2022-11-22 01:18:32,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:32,085 INFO L225 Difference]: With dead ends: 718 [2022-11-22 01:18:32,085 INFO L226 Difference]: Without dead ends: 716 [2022-11-22 01:18:32,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:18:32,087 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:32,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 78 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:18:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-22 01:18:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 527. [2022-11-22 01:18:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 522 states have (on average 1.3007662835249043) internal successors, (679), 526 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 679 transitions. [2022-11-22 01:18:32,113 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 679 transitions. Word has length 29 [2022-11-22 01:18:32,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:32,113 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 679 transitions. [2022-11-22 01:18:32,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 679 transitions. [2022-11-22 01:18:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:18:32,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:32,120 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2022-11-22 01:18:32,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:32,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:32,327 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash -357161224, now seen corresponding path program 2 times [2022-11-22 01:18:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:32,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059579819] [2022-11-22 01:18:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:32,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:32,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059579819] [2022-11-22 01:18:32,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059579819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:32,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79026418] [2022-11-22 01:18:32,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:18:32,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:32,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:32,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:32,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:18:32,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 01:18:32,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:18:32,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:18:32,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:32,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:32,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79026418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:32,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872574943] [2022-11-22 01:18:32,620 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:32,620 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:32,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:32,620 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:32,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:32,690 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:32,892 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4089#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:32,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:32,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:32,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-22 01:18:32,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47431467] [2022-11-22 01:18:32,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:32,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:18:32,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:32,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:18:32,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:18:32,894 INFO L87 Difference]: Start difference. First operand 527 states and 679 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:33,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:33,075 INFO L93 Difference]: Finished difference Result 1325 states and 1829 transitions. [2022-11-22 01:18:33,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:18:33,075 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 30 [2022-11-22 01:18:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:33,079 INFO L225 Difference]: With dead ends: 1325 [2022-11-22 01:18:33,079 INFO L226 Difference]: Without dead ends: 1323 [2022-11-22 01:18:33,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:18:33,081 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 97 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:33,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 69 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:18:33,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-11-22 01:18:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 816. [2022-11-22 01:18:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 811 states have (on average 1.311960542540074) internal successors, (1064), 815 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1064 transitions. [2022-11-22 01:18:33,121 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1064 transitions. Word has length 30 [2022-11-22 01:18:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:33,122 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1064 transitions. [2022-11-22 01:18:33,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1064 transitions. [2022-11-22 01:18:33,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-22 01:18:33,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:33,123 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2022-11-22 01:18:33,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:33,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:18:33,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash 826770402, now seen corresponding path program 2 times [2022-11-22 01:18:33,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:33,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541930872] [2022-11-22 01:18:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:33,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:33,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:33,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541930872] [2022-11-22 01:18:33,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541930872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:33,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007464795] [2022-11-22 01:18:33,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:18:33,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:33,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:33,397 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:33,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:18:33,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 01:18:33,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:18:33,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:18:33,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:33,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:33,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007464795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:33,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626445638] [2022-11-22 01:18:33,610 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:33,610 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:33,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:33,610 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:33,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:33,721 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:34,031 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6720#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:34,031 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:34,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:34,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-22 01:18:34,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747303544] [2022-11-22 01:18:34,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:34,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:18:34,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:34,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:18:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:18:34,033 INFO L87 Difference]: Start difference. First operand 816 states and 1064 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:34,161 INFO L93 Difference]: Finished difference Result 2024 states and 2646 transitions. [2022-11-22 01:18:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:18:34,161 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 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 31 [2022-11-22 01:18:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:34,168 INFO L225 Difference]: With dead ends: 2024 [2022-11-22 01:18:34,168 INFO L226 Difference]: Without dead ends: 2023 [2022-11-22 01:18:34,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:18:34,170 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 87 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:34,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 80 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:18:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2022-11-22 01:18:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2023. [2022-11-22 01:18:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 2018 states have (on average 1.207631318136769) internal successors, (2437), 2022 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:34,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2437 transitions. [2022-11-22 01:18:34,259 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2437 transitions. Word has length 31 [2022-11-22 01:18:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:34,259 INFO L495 AbstractCegarLoop]: Abstraction has 2023 states and 2437 transitions. [2022-11-22 01:18:34,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:34,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2437 transitions. [2022-11-22 01:18:34,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 01:18:34,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:34,265 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1] [2022-11-22 01:18:34,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:34,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 01:18:34,471 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:34,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash 84797903, now seen corresponding path program 3 times [2022-11-22 01:18:34,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:34,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359224732] [2022-11-22 01:18:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:34,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:34,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:34,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359224732] [2022-11-22 01:18:34,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359224732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:34,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377782644] [2022-11-22 01:18:34,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:18:34,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:34,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:34,694 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:34,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:18:34,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:18:34,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:18:34,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:18:34,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:34,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:35,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377782644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:35,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1010606888] [2022-11-22 01:18:35,110 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:35,110 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:35,110 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:35,111 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:35,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:35,188 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:35,475 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11743#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:35,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:35,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:35,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-22 01:18:35,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391679981] [2022-11-22 01:18:35,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:35,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:18:35,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:35,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:18:35,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:18:35,478 INFO L87 Difference]: Start difference. First operand 2023 states and 2437 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:35,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:35,891 INFO L93 Difference]: Finished difference Result 4679 states and 6143 transitions. [2022-11-22 01:18:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:18:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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 65 [2022-11-22 01:18:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:35,906 INFO L225 Difference]: With dead ends: 4679 [2022-11-22 01:18:35,906 INFO L226 Difference]: Without dead ends: 4677 [2022-11-22 01:18:35,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:18:35,910 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 208 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:35,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 160 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:18:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2022-11-22 01:18:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 3082. [2022-11-22 01:18:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 3077 states have (on average 1.2317192070198244) internal successors, (3790), 3081 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 3790 transitions. [2022-11-22 01:18:36,105 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 3790 transitions. Word has length 65 [2022-11-22 01:18:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:36,105 INFO L495 AbstractCegarLoop]: Abstraction has 3082 states and 3790 transitions. [2022-11-22 01:18:36,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 3790 transitions. [2022-11-22 01:18:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 01:18:36,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:36,110 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2022-11-22 01:18:36,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:36,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:36,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:36,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash 419659974, now seen corresponding path program 3 times [2022-11-22 01:18:36,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:36,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112996340] [2022-11-22 01:18:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:36,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:36,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112996340] [2022-11-22 01:18:36,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112996340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:36,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074160637] [2022-11-22 01:18:36,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:18:36,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:36,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:36,514 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:36,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 01:18:36,578 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:18:36,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:18:36,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:18:36,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:36,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:36,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074160637] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:36,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1126064974] [2022-11-22 01:18:36,971 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:36,971 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:36,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:36,972 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:36,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:37,015 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:37,282 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20962#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:37,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:37,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:37,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-22 01:18:37,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40687426] [2022-11-22 01:18:37,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:37,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:18:37,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:37,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:18:37,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2022-11-22 01:18:37,285 INFO L87 Difference]: Start difference. First operand 3082 states and 3790 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:37,775 INFO L93 Difference]: Finished difference Result 7642 states and 10096 transitions. [2022-11-22 01:18:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:18:37,775 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 66 [2022-11-22 01:18:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:37,796 INFO L225 Difference]: With dead ends: 7642 [2022-11-22 01:18:37,797 INFO L226 Difference]: Without dead ends: 7640 [2022-11-22 01:18:37,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2022-11-22 01:18:37,801 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 333 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:37,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 141 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:18:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2022-11-22 01:18:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 3904. [2022-11-22 01:18:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3899 states have (on average 1.24852526288792) internal successors, (4868), 3903 states have internal predecessors, (4868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 4868 transitions. [2022-11-22 01:18:38,070 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 4868 transitions. Word has length 66 [2022-11-22 01:18:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:38,072 INFO L495 AbstractCegarLoop]: Abstraction has 3904 states and 4868 transitions. [2022-11-22 01:18:38,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 4868 transitions. [2022-11-22 01:18:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 01:18:38,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:38,077 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1] [2022-11-22 01:18:38,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-22 01:18:38,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:38,287 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:38,288 INFO L85 PathProgramCache]: Analyzing trace with hash -113592200, now seen corresponding path program 3 times [2022-11-22 01:18:38,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:38,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784290829] [2022-11-22 01:18:38,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:38,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:38,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:38,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784290829] [2022-11-22 01:18:38,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784290829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:38,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236911737] [2022-11-22 01:18:38,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:18:38,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:38,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:38,502 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:38,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 01:18:38,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:18:38,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:18:38,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:18:38,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:38,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:38,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236911737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:38,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [41634898] [2022-11-22 01:18:38,959 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:38,959 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:38,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:38,960 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:38,960 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:39,045 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:39,345 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34469#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:39,345 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:39,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:39,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-22 01:18:39,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334152387] [2022-11-22 01:18:39,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:39,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:18:39,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:39,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:18:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=684, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:18:39,348 INFO L87 Difference]: Start difference. First operand 3904 states and 4868 transitions. Second operand has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:40,148 INFO L93 Difference]: Finished difference Result 13793 states and 17626 transitions. [2022-11-22 01:18:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:18:40,149 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 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 67 [2022-11-22 01:18:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:40,201 INFO L225 Difference]: With dead ends: 13793 [2022-11-22 01:18:40,201 INFO L226 Difference]: Without dead ends: 13792 [2022-11-22 01:18:40,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=308, Invalid=684, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:18:40,208 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 171 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:40,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 160 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:18:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13792 states. [2022-11-22 01:18:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13792 to 13792. [2022-11-22 01:18:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13792 states, 13787 states have (on average 1.1689272503082615) internal successors, (16116), 13791 states have internal predecessors, (16116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13792 states to 13792 states and 16116 transitions. [2022-11-22 01:18:41,108 INFO L78 Accepts]: Start accepts. Automaton has 13792 states and 16116 transitions. Word has length 67 [2022-11-22 01:18:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:41,109 INFO L495 AbstractCegarLoop]: Abstraction has 13792 states and 16116 transitions. [2022-11-22 01:18:41,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 13792 states and 16116 transitions. [2022-11-22 01:18:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 01:18:41,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:41,130 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1] [2022-11-22 01:18:41,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:41,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-22 01:18:41,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:41,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:41,336 INFO L85 PathProgramCache]: Analyzing trace with hash 65778939, now seen corresponding path program 4 times [2022-11-22 01:18:41,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:41,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21829862] [2022-11-22 01:18:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:41,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:42,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:42,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21829862] [2022-11-22 01:18:42,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21829862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:42,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238340994] [2022-11-22 01:18:42,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:18:42,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:42,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:42,102 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:42,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 01:18:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:42,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:18:42,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:42,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:43,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238340994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:43,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1526099652] [2022-11-22 01:18:43,323 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:43,323 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:43,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:43,324 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:43,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:43,445 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:43,789 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '66706#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:43,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:43,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:43,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-22 01:18:43,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502409552] [2022-11-22 01:18:43,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:43,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 01:18:43,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:43,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 01:18:43,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=1921, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 01:18:43,793 INFO L87 Difference]: Start difference. First operand 13792 states and 16116 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:45,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:45,677 INFO L93 Difference]: Finished difference Result 32911 states and 41407 transitions. [2022-11-22 01:18:45,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 01:18:45,677 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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 137 [2022-11-22 01:18:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:45,726 INFO L225 Difference]: With dead ends: 32911 [2022-11-22 01:18:45,726 INFO L226 Difference]: Without dead ends: 32909 [2022-11-22 01:18:45,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1159, Invalid=1921, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 01:18:45,741 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 617 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:45,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 320 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:18:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32909 states. [2022-11-22 01:18:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32909 to 18774. [2022-11-22 01:18:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18774 states, 18769 states have (on average 1.1893015078054239) internal successors, (22322), 18773 states have internal predecessors, (22322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18774 states to 18774 states and 22322 transitions. [2022-11-22 01:18:46,980 INFO L78 Accepts]: Start accepts. Automaton has 18774 states and 22322 transitions. Word has length 137 [2022-11-22 01:18:46,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:46,981 INFO L495 AbstractCegarLoop]: Abstraction has 18774 states and 22322 transitions. [2022-11-22 01:18:46,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 18774 states and 22322 transitions. [2022-11-22 01:18:47,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-22 01:18:47,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:47,021 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2022-11-22 01:18:47,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:47,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 01:18:47,227 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash 110413666, now seen corresponding path program 4 times [2022-11-22 01:18:47,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:47,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089831412] [2022-11-22 01:18:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:47,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:48,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:48,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089831412] [2022-11-22 01:18:48,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089831412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:48,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260794177] [2022-11-22 01:18:48,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:18:48,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:48,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:48,091 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:48,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 01:18:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:48,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:18:48,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:48,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:49,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260794177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:49,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [61783901] [2022-11-22 01:18:49,450 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:49,451 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:49,451 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:49,451 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:49,451 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:49,509 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:49,807 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '126087#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:49,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:49,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:49,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-22 01:18:49,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166888969] [2022-11-22 01:18:49,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:49,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 01:18:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 01:18:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 01:18:49,813 INFO L87 Difference]: Start difference. First operand 18774 states and 22322 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:18:51,943 INFO L93 Difference]: Finished difference Result 50455 states and 64089 transitions. [2022-11-22 01:18:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 01:18:51,943 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 138 [2022-11-22 01:18:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:18:52,003 INFO L225 Difference]: With dead ends: 50455 [2022-11-22 01:18:52,004 INFO L226 Difference]: Without dead ends: 50453 [2022-11-22 01:18:52,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 01:18:52,018 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 571 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:18:52,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 285 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:18:52,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50453 states. [2022-11-22 01:18:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50453 to 21600. [2022-11-22 01:18:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21600 states, 21595 states have (on average 1.201203982403334) internal successors, (25940), 21599 states have internal predecessors, (25940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21600 states to 21600 states and 25940 transitions. [2022-11-22 01:18:53,680 INFO L78 Accepts]: Start accepts. Automaton has 21600 states and 25940 transitions. Word has length 138 [2022-11-22 01:18:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:18:53,680 INFO L495 AbstractCegarLoop]: Abstraction has 21600 states and 25940 transitions. [2022-11-22 01:18:53,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:18:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 21600 states and 25940 transitions. [2022-11-22 01:18:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-22 01:18:53,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:18:53,706 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1] [2022-11-22 01:18:53,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 01:18:53,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:53,917 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:18:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:18:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1210947420, now seen corresponding path program 4 times [2022-11-22 01:18:53,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:18:53,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393241817] [2022-11-22 01:18:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:18:53,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:18:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:54,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:18:54,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393241817] [2022-11-22 01:18:54,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393241817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:18:54,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377529133] [2022-11-22 01:18:54,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:18:54,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:18:54,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:18:54,644 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:18:54,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 01:18:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:18:54,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:18:54,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:18:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:54,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:18:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:18:55,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377529133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:18:55,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [70991164] [2022-11-22 01:18:55,855 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:18:55,855 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:18:55,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:18:55,856 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:18:55,856 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:18:55,951 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:18:56,314 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '208435#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:18:56,314 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:18:56,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:18:56,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-22 01:18:56,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137323849] [2022-11-22 01:18:56,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:18:56,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 01:18:56,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:18:56,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 01:18:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1160, Invalid=1920, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 01:18:56,318 INFO L87 Difference]: Start difference. First operand 21600 states and 25940 transitions. Second operand has 48 states, 47 states have (on average 5.8936170212765955) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:19:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:19:02,908 INFO L93 Difference]: Finished difference Result 100079 states and 125868 transitions. [2022-11-22 01:19:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 01:19:02,908 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.8936170212765955) internal successors, (277), 48 states have internal predecessors, (277), 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 139 [2022-11-22 01:19:02,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:19:03,000 INFO L225 Difference]: With dead ends: 100079 [2022-11-22 01:19:03,000 INFO L226 Difference]: Without dead ends: 100078 [2022-11-22 01:19:03,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1160, Invalid=1920, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 01:19:03,022 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 465 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:19:03,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 308 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:19:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100078 states. [2022-11-22 01:19:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100078 to 100078. [2022-11-22 01:19:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100078 states, 100073 states have (on average 1.1478720534010172) internal successors, (114871), 100077 states have internal predecessors, (114871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:19:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100078 states to 100078 states and 114871 transitions. [2022-11-22 01:19:11,073 INFO L78 Accepts]: Start accepts. Automaton has 100078 states and 114871 transitions. Word has length 139 [2022-11-22 01:19:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:19:11,073 INFO L495 AbstractCegarLoop]: Abstraction has 100078 states and 114871 transitions. [2022-11-22 01:19:11,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.8936170212765955) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:19:11,074 INFO L276 IsEmpty]: Start isEmpty. Operand 100078 states and 114871 transitions. [2022-11-22 01:19:11,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-22 01:19:11,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:19:11,442 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1] [2022-11-22 01:19:11,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-22 01:19:11,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 01:19:11,643 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:19:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:19:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash 465397587, now seen corresponding path program 5 times [2022-11-22 01:19:11,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:19:11,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492026340] [2022-11-22 01:19:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:19:11,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:19:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:19:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:19:14,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:19:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492026340] [2022-11-22 01:19:14,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492026340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:19:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668858229] [2022-11-22 01:19:14,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:19:14,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:19:14,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:19:14,050 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:19:14,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee20697c-6dd7-476b-b65f-9ed348769eae/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-22 01:19:14,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-22 01:19:14,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:19:14,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 01:19:14,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:19:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:19:14,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:19:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:19:18,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668858229] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:19:18,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [57070390] [2022-11-22 01:19:18,037 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:19:18,037 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:19:18,038 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:19:18,038 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:19:18,038 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:19:18,127 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:19:18,630 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '437030#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-22 01:19:18,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:19:18,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:19:18,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-22 01:19:18,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042765051] [2022-11-22 01:19:18,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:19:18,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-22 01:19:18,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:19:18,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-22 01:19:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4591, Invalid=6121, Unknown=0, NotChecked=0, Total=10712 [2022-11-22 01:19:18,638 INFO L87 Difference]: Start difference. First operand 100078 states and 114871 transitions. Second operand has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 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)