./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_11_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_11_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0 --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 af5586910dcdb8882a212a6958171fdbfb01ac33e173c458c484ec1cc1e06b08 --- 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-e04fb08 [2022-11-16 16:08:29,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:08:29,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:08:29,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:08:29,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:08:29,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:08:29,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:08:29,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:08:29,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:08:29,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:08:29,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:08:29,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:08:29,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:08:29,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:08:29,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:08:29,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:08:29,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:08:29,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:08:29,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:08:29,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:08:29,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:08:29,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:08:29,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:08:29,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:08:29,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:08:29,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:08:29,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:08:29,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:08:29,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:08:29,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:08:29,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:08:29,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:08:29,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:08:29,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:08:29,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:08:29,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:08:29,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:08:29,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:08:29,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:08:29,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:08:29,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:08:29,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-16 16:08:29,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:08:29,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:08:29,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:08:29,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:08:29,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:08:29,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:08:29,683 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:08:29,683 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:08:29,684 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:08:29,684 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:08:29,684 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:08:29,684 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:08:29,684 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:08:29,685 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:08:29,685 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:08:29,685 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:08:29,685 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:08:29,686 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:08:29,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:08:29,687 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:08:29,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:08:29,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:08:29,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:08:29,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:08:29,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:08:29,688 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 16:08:29,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:08:29,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:08:29,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:08:29,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:08:29,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:08:29,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:08:29,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:08:29,690 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:08:29,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:08:29,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:08:29,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:08:29,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:08:29,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:08:29,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:08:29,691 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_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af5586910dcdb8882a212a6958171fdbfb01ac33e173c458c484ec1cc1e06b08 [2022-11-16 16:08:30,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:08:30,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:08:30,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:08:30,129 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:08:30,130 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:08:30,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_11_good.i [2022-11-16 16:08:30,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/data/5ad7cd5fc/484a93b9cf0942b5a2dd4ec7bb8d2f34/FLAGb231bb1e7 [2022-11-16 16:08:31,013 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:08:31,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_11_good.i [2022-11-16 16:08:31,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/data/5ad7cd5fc/484a93b9cf0942b5a2dd4ec7bb8d2f34/FLAGb231bb1e7 [2022-11-16 16:08:31,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/data/5ad7cd5fc/484a93b9cf0942b5a2dd4ec7bb8d2f34 [2022-11-16 16:08:31,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:08:31,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:08:31,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:08:31,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:08:31,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:08:31,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:08:31" (1/1) ... [2022-11-16 16:08:31,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf1df1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:31, skipping insertion in model container [2022-11-16 16:08:31,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:08:31" (1/1) ... [2022-11-16 16:08:31,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:08:31,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:08:31,775 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 16:08:32,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:08:32,339 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:08:32,381 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 16:08:32,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:08:32,631 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:08:32,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32 WrapperNode [2022-11-16 16:08:32,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:08:32,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:08:32,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:08:32,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:08:32,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,747 INFO L138 Inliner]: procedures = 503, calls = 173, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 219 [2022-11-16 16:08:32,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:08:32,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:08:32,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:08:32,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:08:32,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,788 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:08:32,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:08:32,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:08:32,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:08:32,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (1/1) ... [2022-11-16 16:08:32,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:08:32,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:32,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:08:32,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:08:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-11-16 16:08:32,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-11-16 16:08:32,946 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-16 16:08:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-16 16:08:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrue [2022-11-16 16:08:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrue [2022-11-16 16:08:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:08:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:08:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:08:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:08:32,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:08:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:08:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsFalse [2022-11-16 16:08:32,949 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsFalse [2022-11-16 16:08:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-16 16:08:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:08:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:08:33,144 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:08:33,147 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:08:33,605 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:08:33,708 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:08:33,709 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:08:33,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:08:33 BoogieIcfgContainer [2022-11-16 16:08:33,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:08:33,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:08:33,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:08:33,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:08:33,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:08:31" (1/3) ... [2022-11-16 16:08:33,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e65c326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:08:33, skipping insertion in model container [2022-11-16 16:08:33,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:08:32" (2/3) ... [2022-11-16 16:08:33,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e65c326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:08:33, skipping insertion in model container [2022-11-16 16:08:33,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:08:33" (3/3) ... [2022-11-16 16:08:33,730 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_multiply_11_good.i [2022-11-16 16:08:33,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:08:33,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 16:08:33,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:08:33,849 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;@21eaf54e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:08:33,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 16:08:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 38 states have (on average 1.5) internal successors, (57), 54 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 16:08:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 16:08:33,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:33,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:33,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:33,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1645676511, now seen corresponding path program 1 times [2022-11-16 16:08:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:33,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926694990] [2022-11-16 16:08:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:33,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:08:34,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:34,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926694990] [2022-11-16 16:08:34,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926694990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:34,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:08:34,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:08:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167697273] [2022-11-16 16:08:34,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:34,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:08:34,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:08:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:34,620 INFO L87 Difference]: Start difference. First operand has 69 states, 38 states have (on average 1.5) internal successors, (57), 54 states have internal predecessors, (57), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 16:08:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:34,875 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2022-11-16 16:08:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:08:34,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2022-11-16 16:08:34,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:34,904 INFO L225 Difference]: With dead ends: 70 [2022-11-16 16:08:34,904 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 16:08:34,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:08:34,915 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 7 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:34,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 276 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:08:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 16:08:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-11-16 16:08:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 49 states have internal predecessors, (51), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 16:08:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2022-11-16 16:08:34,994 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 17 [2022-11-16 16:08:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:34,996 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2022-11-16 16:08:34,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 16:08:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2022-11-16 16:08:34,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 16:08:35,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:35,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:35,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:08:35,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:35,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:35,005 INFO L85 PathProgramCache]: Analyzing trace with hash -523635639, now seen corresponding path program 1 times [2022-11-16 16:08:35,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:35,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007517631] [2022-11-16 16:08:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:35,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:08:35,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:35,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007517631] [2022-11-16 16:08:35,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007517631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:35,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:08:35,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:08:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047469286] [2022-11-16 16:08:35,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:35,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:08:35,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:08:35,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:35,271 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 16:08:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:35,363 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2022-11-16 16:08:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:08:35,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2022-11-16 16:08:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:35,366 INFO L225 Difference]: With dead ends: 63 [2022-11-16 16:08:35,366 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 16:08:35,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:35,368 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:35,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 253 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:08:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 16:08:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-16 16:08:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 48 states have internal predecessors, (50), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 16:08:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2022-11-16 16:08:35,381 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 18 [2022-11-16 16:08:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:35,381 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2022-11-16 16:08:35,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 16:08:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2022-11-16 16:08:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 16:08:35,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:35,383 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:35,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:08:35,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1756082501, now seen corresponding path program 1 times [2022-11-16 16:08:35,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:35,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925089158] [2022-11-16 16:08:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:35,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 16:08:35,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:35,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925089158] [2022-11-16 16:08:35,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925089158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:35,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:08:35,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:08:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983792353] [2022-11-16 16:08:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:08:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:08:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:35,551 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 16:08:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:35,712 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2022-11-16 16:08:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:08:35,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2022-11-16 16:08:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:35,718 INFO L225 Difference]: With dead ends: 63 [2022-11-16 16:08:35,718 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 16:08:35,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:08:35,727 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 7 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:35,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 241 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:08:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 16:08:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2022-11-16 16:08:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 47 states have internal predecessors, (49), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 16:08:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2022-11-16 16:08:35,746 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 28 [2022-11-16 16:08:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:35,747 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2022-11-16 16:08:35,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 16:08:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2022-11-16 16:08:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 16:08:35,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:35,749 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:35,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:08:35,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:35,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1396017211, now seen corresponding path program 1 times [2022-11-16 16:08:35,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:35,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185181142] [2022-11-16 16:08:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:35,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 16:08:36,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:36,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185181142] [2022-11-16 16:08:36,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185181142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:36,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:08:36,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:08:36,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370410131] [2022-11-16 16:08:36,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:36,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:08:36,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:36,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:08:36,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:36,072 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 16:08:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:36,197 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2022-11-16 16:08:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:08:36,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-11-16 16:08:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:36,204 INFO L225 Difference]: With dead ends: 61 [2022-11-16 16:08:36,204 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 16:08:36,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:36,206 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:36,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:08:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 16:08:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-16 16:08:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 46 states have internal predecessors, (48), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 16:08:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2022-11-16 16:08:36,224 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 29 [2022-11-16 16:08:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:36,225 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2022-11-16 16:08:36,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 16:08:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2022-11-16 16:08:36,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 16:08:36,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:36,233 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:36,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:08:36,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:36,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:36,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1900666403, now seen corresponding path program 1 times [2022-11-16 16:08:36,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:36,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513392219] [2022-11-16 16:08:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:36,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 16:08:36,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513392219] [2022-11-16 16:08:36,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513392219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:08:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280170638] [2022-11-16 16:08:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:36,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:36,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:36,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:08:36,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:08:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:36,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:08:36,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:08:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:08:36,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:08:36,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280170638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:36,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:08:36,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-16 16:08:36,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795713646] [2022-11-16 16:08:36,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:36,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:08:36,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:36,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:08:36,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:36,633 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:08:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:36,686 INFO L93 Difference]: Finished difference Result 92 states and 118 transitions. [2022-11-16 16:08:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:08:36,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 38 [2022-11-16 16:08:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:36,688 INFO L225 Difference]: With dead ends: 92 [2022-11-16 16:08:36,688 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 16:08:36,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:36,690 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:36,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 133 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:08:36,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 16:08:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2022-11-16 16:08:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.325) internal successors, (53), 49 states have internal predecessors, (53), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 16:08:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2022-11-16 16:08:36,701 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 38 [2022-11-16 16:08:36,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:36,701 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2022-11-16 16:08:36,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:08:36,702 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2022-11-16 16:08:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 16:08:36,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:36,704 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:36,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:08:36,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:36,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1208883792, now seen corresponding path program 1 times [2022-11-16 16:08:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:36,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728929758] [2022-11-16 16:08:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 16:08:37,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:37,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728929758] [2022-11-16 16:08:37,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728929758] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:08:37,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15955777] [2022-11-16 16:08:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:37,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:37,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:37,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:08:37,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:08:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:37,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:08:37,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:08:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 16:08:37,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:08:37,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15955777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:37,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:08:37,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-16 16:08:37,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421046930] [2022-11-16 16:08:37,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:37,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:08:37,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:37,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:08:37,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:37,280 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:08:37,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:37,334 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2022-11-16 16:08:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:08:37,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 39 [2022-11-16 16:08:37,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:37,337 INFO L225 Difference]: With dead ends: 65 [2022-11-16 16:08:37,338 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 16:08:37,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:37,344 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:37,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 109 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:08:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 16:08:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-16 16:08:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.3) internal successors, (52), 48 states have internal predecessors, (52), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 16:08:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-11-16 16:08:37,369 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 39 [2022-11-16 16:08:37,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:37,370 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-11-16 16:08:37,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 16:08:37,371 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-11-16 16:08:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 16:08:37,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:37,376 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:37,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:08:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:37,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:37,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash -163730689, now seen corresponding path program 1 times [2022-11-16 16:08:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:37,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9964799] [2022-11-16 16:08:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:37,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 16:08:37,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:37,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9964799] [2022-11-16 16:08:37,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9964799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:08:37,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969246363] [2022-11-16 16:08:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:37,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:37,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:37,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:08:37,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:08:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:37,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:08:37,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:08:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 16:08:37,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:08:37,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969246363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:37,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:08:37,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 16:08:37,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078713527] [2022-11-16 16:08:37,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:37,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:08:37,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:37,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:08:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:37,995 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 16:08:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:38,050 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2022-11-16 16:08:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:08:38,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 41 [2022-11-16 16:08:38,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:38,052 INFO L225 Difference]: With dead ends: 92 [2022-11-16 16:08:38,053 INFO L226 Difference]: Without dead ends: 73 [2022-11-16 16:08:38,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:38,054 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 10 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:38,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 145 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:08:38,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-16 16:08:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2022-11-16 16:08:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 46 states have internal predecessors, (49), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 16:08:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2022-11-16 16:08:38,086 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 41 [2022-11-16 16:08:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:38,090 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2022-11-16 16:08:38,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 16:08:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2022-11-16 16:08:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 16:08:38,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:38,094 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:38,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:08:38,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:38,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:38,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:38,302 INFO L85 PathProgramCache]: Analyzing trace with hash -740958642, now seen corresponding path program 1 times [2022-11-16 16:08:38,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:38,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042827500] [2022-11-16 16:08:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:38,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 16:08:38,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:38,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042827500] [2022-11-16 16:08:38,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042827500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:08:38,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366304227] [2022-11-16 16:08:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:38,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:38,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:38,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:08:38,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 16:08:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:38,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 16:08:38,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:08:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 16:08:38,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:08:38,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366304227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:38,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:08:38,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-16 16:08:38,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026284558] [2022-11-16 16:08:38,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:38,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:08:38,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:08:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:38,637 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-16 16:08:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:38,678 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2022-11-16 16:08:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:08:38,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 48 [2022-11-16 16:08:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:38,680 INFO L225 Difference]: With dead ends: 62 [2022-11-16 16:08:38,680 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 16:08:38,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:08:38,681 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:38,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 128 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:08:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 16:08:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 16:08:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 45 states have internal predecessors, (48), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 16:08:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2022-11-16 16:08:38,689 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 48 [2022-11-16 16:08:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:38,689 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-16 16:08:38,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-16 16:08:38,690 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2022-11-16 16:08:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 16:08:38,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:38,691 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:38,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 16:08:38,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 16:08:38,898 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:38,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:38,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1494881253, now seen corresponding path program 1 times [2022-11-16 16:08:38,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:38,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751302932] [2022-11-16 16:08:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:38,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 16:08:38,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:38,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751302932] [2022-11-16 16:08:38,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751302932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:08:38,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794450022] [2022-11-16 16:08:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:38,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:38,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:39,001 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:08:39,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 16:08:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:39,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:08:39,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:08:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 16:08:39,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:08:39,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794450022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:39,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:08:39,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-16 16:08:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601022568] [2022-11-16 16:08:39,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:39,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:08:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:08:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:08:39,267 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 16:08:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:39,337 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2022-11-16 16:08:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:08:39,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2022-11-16 16:08:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:39,339 INFO L225 Difference]: With dead ends: 95 [2022-11-16 16:08:39,339 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 16:08:39,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:08:39,342 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:39,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:08:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 16:08:39,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 16:08:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.205128205128205) internal successors, (47), 45 states have internal predecessors, (47), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 16:08:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2022-11-16 16:08:39,359 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2022-11-16 16:08:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:39,360 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2022-11-16 16:08:39,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 16:08:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2022-11-16 16:08:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 16:08:39,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:39,365 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:39,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 16:08:39,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:39,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:39,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1004072136, now seen corresponding path program 1 times [2022-11-16 16:08:39,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:39,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541610683] [2022-11-16 16:08:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 16:08:39,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:39,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541610683] [2022-11-16 16:08:39,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541610683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:08:39,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856079087] [2022-11-16 16:08:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:39,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:39,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:39,683 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:08:39,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 16:08:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:39,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:08:39,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:08:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 16:08:39,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:08:39,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856079087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:39,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:08:39,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-16 16:08:39,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320393235] [2022-11-16 16:08:39,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:39,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:08:39,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:08:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:08:39,931 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 16:08:39,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:39,995 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2022-11-16 16:08:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:08:39,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2022-11-16 16:08:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:39,998 INFO L225 Difference]: With dead ends: 73 [2022-11-16 16:08:39,998 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 16:08:39,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:08:40,000 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:40,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:08:40,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 16:08:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 16:08:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 45 states have internal predecessors, (45), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 16:08:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2022-11-16 16:08:40,009 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 50 [2022-11-16 16:08:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:40,010 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2022-11-16 16:08:40,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 16:08:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2022-11-16 16:08:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 16:08:40,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:40,017 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:40,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:08:40,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:40,224 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:40,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:40,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1284807923, now seen corresponding path program 1 times [2022-11-16 16:08:40,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:40,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106137924] [2022-11-16 16:08:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:40,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 16:08:40,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:40,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106137924] [2022-11-16 16:08:40,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106137924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:08:40,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:08:40,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:08:40,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350262365] [2022-11-16 16:08:40,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:08:40,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:08:40,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:08:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:08:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:08:40,355 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 16:08:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:08:40,409 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2022-11-16 16:08:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:08:40,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 54 [2022-11-16 16:08:40,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:08:40,411 INFO L225 Difference]: With dead ends: 75 [2022-11-16 16:08:40,411 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 16:08:40,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:08:40,413 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:08:40,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:08:40,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 16:08:40,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-16 16:08:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 41 states have internal predecessors, (41), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 16:08:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2022-11-16 16:08:40,430 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 54 [2022-11-16 16:08:40,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:08:40,430 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2022-11-16 16:08:40,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 16:08:40,431 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2022-11-16 16:08:40,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 16:08:40,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:08:40,432 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:08:40,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 16:08:40,432 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:08:40,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:08:40,432 INFO L85 PathProgramCache]: Analyzing trace with hash 82285286, now seen corresponding path program 1 times [2022-11-16 16:08:40,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:08:40,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257993796] [2022-11-16 16:08:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:40,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:08:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 16:08:40,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:08:40,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257993796] [2022-11-16 16:08:40,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257993796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:08:40,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247720587] [2022-11-16 16:08:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:08:40,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:08:40,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:08:40,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:08:40,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 16:08:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:08:40,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:08:40,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:08:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 16:08:40,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:08:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 16:08:41,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247720587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:08:41,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1481014622] [2022-11-16 16:08:41,083 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2022-11-16 16:08:41,083 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:08:41,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:08:41,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:08:41,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:08:42,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:08:42,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:42,720 INFO L321 Elim1Store]: treesize reduction 226, result has 43.5 percent of original size [2022-11-16 16:08:42,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 22 select indices, 22 select index equivalence classes, 233 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 250 [2022-11-16 16:08:42,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:43,213 INFO L321 Elim1Store]: treesize reduction 172, result has 46.7 percent of original size [2022-11-16 16:08:43,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 68 select indices, 68 select index equivalence classes, 112 disjoint index pairs (out of 2278 index pairs), introduced 68 new quantified variables, introduced 14 case distinctions, treesize of input 488 treesize of output 740 [2022-11-16 16:08:43,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:08:43,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:44,156 INFO L321 Elim1Store]: treesize reduction 378, result has 33.5 percent of original size [2022-11-16 16:08:44,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 24 select indices, 24 select index equivalence classes, 255 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 42 case distinctions, treesize of input 127 treesize of output 277 [2022-11-16 16:08:45,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:08:45,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:08:45,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:45,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 69 select indices, 69 select index equivalence classes, 133 disjoint index pairs (out of 2346 index pairs), introduced 69 new quantified variables, introduced 0 case distinctions, treesize of input 495 treesize of output 691 [2022-11-16 16:08:47,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:47,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:48,325 INFO L321 Elim1Store]: treesize reduction 388, result has 34.8 percent of original size [2022-11-16 16:08:48,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 25 select indices, 25 select index equivalence classes, 278 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 45 case distinctions, treesize of input 144 treesize of output 306 [2022-11-16 16:08:48,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:48,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:48,618 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 16:08:48,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 69 select indices, 69 select index equivalence classes, 156 disjoint index pairs (out of 2346 index pairs), introduced 69 new quantified variables, introduced 1 case distinctions, treesize of input 502 treesize of output 705 [2022-11-16 16:08:48,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:48,790 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 16:08:48,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 23 select indices, 23 select index equivalence classes, 277 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 190 [2022-11-16 16:08:49,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:08:49,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:08:51,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:08:51,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:51,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:51,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:51,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:08:51,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:08:51,670 INFO L321 Elim1Store]: treesize reduction 492, result has 20.3 percent of original size [2022-11-16 16:08:51,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 70 select indices, 70 select index equivalence classes, 110 disjoint index pairs (out of 2415 index pairs), introduced 70 new quantified variables, introduced 153 case distinctions, treesize of input 1871 treesize of output 1802 [2022-11-16 16:08:53,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:08:58,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:09:01,598 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsTrue with input of size 386 for LOIs [2022-11-16 16:09:01,858 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 44 for LOIs [2022-11-16 16:09:01,865 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsFalse with input of size 401 for LOIs [2022-11-16 16:09:02,132 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 309 for LOIs [2022-11-16 16:09:02,189 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:09:36,541 WARN L233 SmtUtils]: Spent 22.37s on a formula simplification. DAG size of input: 401 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:09:59,729 WARN L233 SmtUtils]: Spent 22.97s on a formula simplification. DAG size of input: 403 DAG size of output: 387 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:10:20,310 WARN L233 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 466 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:10:28,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1481014622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:10:28,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:10:28,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [4, 4, 4] total 39 [2022-11-16 16:10:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258739377] [2022-11-16 16:10:28,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:10:28,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 16:10:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:10:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 16:10:28,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1374, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 16:10:28,183 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 16:10:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:10:29,381 INFO L93 Difference]: Finished difference Result 141 states and 167 transitions. [2022-11-16 16:10:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 16:10:29,382 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 56 [2022-11-16 16:10:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:10:29,383 INFO L225 Difference]: With dead ends: 141 [2022-11-16 16:10:29,383 INFO L226 Difference]: Without dead ends: 77 [2022-11-16 16:10:29,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 127 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 86.0s TimeCoverageRelationStatistics Valid=186, Invalid=1374, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 16:10:29,385 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 28 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 445 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:10:29,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 541 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 445 Unchecked, 1.1s Time] [2022-11-16 16:10:29,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-16 16:10:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-16 16:10:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 54 states have internal predecessors, (54), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 14 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 16:10:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2022-11-16 16:10:29,412 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 56 [2022-11-16 16:10:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:10:29,412 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2022-11-16 16:10:29,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 16:10:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2022-11-16 16:10:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 16:10:29,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:10:29,414 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:10:29,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 16:10:29,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 16:10:29,622 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:10:29,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:10:29,623 INFO L85 PathProgramCache]: Analyzing trace with hash 905017852, now seen corresponding path program 1 times [2022-11-16 16:10:29,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:10:29,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652003246] [2022-11-16 16:10:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:29,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:10:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:10:29,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:10:29,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652003246] [2022-11-16 16:10:29,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652003246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:10:29,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445589278] [2022-11-16 16:10:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:10:29,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:10:29,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:10:29,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:10:29,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 16:10:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:10:30,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:10:30,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:10:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:10:30,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:10:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:10:30,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445589278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:10:30,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1132188440] [2022-11-16 16:10:30,190 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-16 16:10:30,190 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:10:30,191 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:10:30,191 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:10:30,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:10:30,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:31,040 INFO L321 Elim1Store]: treesize reduction 172, result has 46.7 percent of original size [2022-11-16 16:10:31,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 68 select indices, 68 select index equivalence classes, 112 disjoint index pairs (out of 2278 index pairs), introduced 68 new quantified variables, introduced 14 case distinctions, treesize of input 488 treesize of output 740 [2022-11-16 16:10:31,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:31,690 INFO L321 Elim1Store]: treesize reduction 226, result has 43.5 percent of original size [2022-11-16 16:10:31,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 22 select indices, 22 select index equivalence classes, 233 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 250 [2022-11-16 16:10:31,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:32,494 INFO L321 Elim1Store]: treesize reduction 378, result has 33.5 percent of original size [2022-11-16 16:10:32,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 24 select indices, 24 select index equivalence classes, 255 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 42 case distinctions, treesize of input 127 treesize of output 277 [2022-11-16 16:10:32,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:10:32,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:10:33,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:10:33,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:10:33,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:33,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 69 select indices, 69 select index equivalence classes, 133 disjoint index pairs (out of 2346 index pairs), introduced 69 new quantified variables, introduced 0 case distinctions, treesize of input 495 treesize of output 691 [2022-11-16 16:10:34,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:34,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:35,806 INFO L321 Elim1Store]: treesize reduction 388, result has 34.8 percent of original size [2022-11-16 16:10:35,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 25 select indices, 25 select index equivalence classes, 278 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 45 case distinctions, treesize of input 144 treesize of output 306 [2022-11-16 16:10:36,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:36,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:36,079 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 16:10:36,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 69 select indices, 69 select index equivalence classes, 156 disjoint index pairs (out of 2346 index pairs), introduced 69 new quantified variables, introduced 1 case distinctions, treesize of input 502 treesize of output 705 [2022-11-16 16:10:36,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:36,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:36,308 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 16:10:36,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 23 select indices, 23 select index equivalence classes, 277 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 190 [2022-11-16 16:10:36,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:10:36,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:10:38,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:38,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:38,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:38,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:10:38,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:10:38,958 INFO L321 Elim1Store]: treesize reduction 492, result has 20.3 percent of original size [2022-11-16 16:10:38,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 70 select indices, 70 select index equivalence classes, 110 disjoint index pairs (out of 2415 index pairs), introduced 70 new quantified variables, introduced 153 case distinctions, treesize of input 1871 treesize of output 1802 [2022-11-16 16:10:40,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:10:40,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:10:55,409 INFO L321 Elim1Store]: treesize reduction 700, result has 16.0 percent of original size [2022-11-16 16:10:55,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 25 select indices, 25 select index equivalence classes, 253 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 71 case distinctions, treesize of input 1882 treesize of output 1915 [2022-11-16 16:11:35,556 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsTrue with input of size 386 for LOIs [2022-11-16 16:11:35,800 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 466 for LOIs [2022-11-16 16:11:36,374 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsFalse with input of size 28 for LOIs [2022-11-16 16:11:36,377 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 63 for LOIs [2022-11-16 16:11:36,391 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:12:03,324 WARN L233 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 466 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:12:24,625 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 467 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:12:32,359 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 467 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:12:49,589 WARN L233 SmtUtils]: Spent 12.32s on a formula simplification. DAG size of input: 475 DAG size of output: 390 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:13:11,579 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification. DAG size of input: 478 DAG size of output: 388 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:13:39,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1132188440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:13:39,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:13:39,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [4, 4, 4] total 39 [2022-11-16 16:13:39,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388093727] [2022-11-16 16:13:39,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:13:39,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 16:13:39,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:13:39,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 16:13:39,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 16:13:39,434 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 25 states have internal predecessors, (31), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 16:13:41,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:13:41,292 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2022-11-16 16:13:41,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 16:13:41,293 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 25 states have internal predecessors, (31), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 60 [2022-11-16 16:13:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:13:41,294 INFO L225 Difference]: With dead ends: 104 [2022-11-16 16:13:41,294 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 16:13:41,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 130 SyntacticMatches, 14 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 123.1s TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 16:13:41,296 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 41 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 531 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:13:41,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 243 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 381 Invalid, 0 Unknown, 531 Unchecked, 1.8s Time] [2022-11-16 16:13:41,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 16:13:41,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-16 16:13:41,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 52 states have internal predecessors, (52), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 16:13:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2022-11-16 16:13:41,333 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 60 [2022-11-16 16:13:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:13:41,333 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2022-11-16 16:13:41,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 25 states have internal predecessors, (31), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 16:13:41,334 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2022-11-16 16:13:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 16:13:41,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:13:41,334 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:13:41,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 16:13:41,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 16:13:41,539 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:13:41,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:13:41,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1602508286, now seen corresponding path program 1 times [2022-11-16 16:13:41,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:13:41,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934583772] [2022-11-16 16:13:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:13:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:13:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:13:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:13:41,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:13:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934583772] [2022-11-16 16:13:41,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934583772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:13:41,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367081833] [2022-11-16 16:13:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:13:41,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:13:41,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:13:41,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:13:41,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 16:13:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:13:41,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:13:41,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:13:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:13:41,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:13:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:13:42,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367081833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:13:42,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1208305333] [2022-11-16 16:13:42,091 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-16 16:13:42,091 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:13:42,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:13:42,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:13:42,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:13:42,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:43,172 INFO L321 Elim1Store]: treesize reduction 378, result has 33.5 percent of original size [2022-11-16 16:13:43,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 24 select indices, 24 select index equivalence classes, 255 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 42 case distinctions, treesize of input 127 treesize of output 277 [2022-11-16 16:13:43,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:43,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 22 select indices, 22 select index equivalence classes, 254 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 182 [2022-11-16 16:13:43,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:43,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 68 select indices, 68 select index equivalence classes, 133 disjoint index pairs (out of 2278 index pairs), introduced 68 new quantified variables, introduced 0 case distinctions, treesize of input 488 treesize of output 688 [2022-11-16 16:13:43,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:13:43,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:13:44,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:13:44,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:13:44,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:44,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 69 select indices, 69 select index equivalence classes, 133 disjoint index pairs (out of 2346 index pairs), introduced 69 new quantified variables, introduced 0 case distinctions, treesize of input 495 treesize of output 691 [2022-11-16 16:13:45,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:45,974 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 16:13:45,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 69 select indices, 69 select index equivalence classes, 149 disjoint index pairs (out of 2346 index pairs), introduced 69 new quantified variables, introduced 1 case distinctions, treesize of input 506 treesize of output 709 [2022-11-16 16:13:46,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,760 INFO L321 Elim1Store]: treesize reduction 334, result has 35.0 percent of original size [2022-11-16 16:13:46,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 25 select indices, 25 select index equivalence classes, 281 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 39 case distinctions, treesize of input 144 treesize of output 294 [2022-11-16 16:13:46,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:46,880 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 16:13:46,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 23 select indices, 23 select index equivalence classes, 277 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 190 [2022-11-16 16:13:47,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 19 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:13:47,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 19 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:13:48,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:48,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:48,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:48,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:13:48,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:13:49,044 INFO L321 Elim1Store]: treesize reduction 488, result has 20.9 percent of original size [2022-11-16 16:13:49,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 70 select indices, 70 select index equivalence classes, 110 disjoint index pairs (out of 2415 index pairs), introduced 70 new quantified variables, introduced 153 case distinctions, treesize of input 1863 treesize of output 1798 [2022-11-16 16:13:50,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:13:50,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:13:58,140 INFO L321 Elim1Store]: treesize reduction 700, result has 16.0 percent of original size [2022-11-16 16:13:58,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 25 select indices, 25 select index equivalence classes, 253 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 71 case distinctions, treesize of input 1860 treesize of output 1893 [2022-11-16 16:14:32,000 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsTrue with input of size 386 for LOIs [2022-11-16 16:14:32,272 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 464 for LOIs [2022-11-16 16:14:32,879 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsFalse with input of size 28 for LOIs [2022-11-16 16:14:32,881 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 406 for LOIs [2022-11-16 16:14:33,372 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:14:42,708 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 406 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:14:50,618 WARN L233 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 410 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:15:21,135 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 469 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:15:32,861 WARN L233 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 474 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:15:57,997 WARN L233 SmtUtils]: Spent 11.32s on a formula simplification. DAG size of input: 475 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:16:18,086 WARN L233 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 478 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:16:37,238 WARN L233 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 483 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:16:49,713 WARN L233 SmtUtils]: Spent 11.89s on a formula simplification. DAG size of input: 489 DAG size of output: 390 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:17:01,465 WARN L233 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 484 DAG size of output: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:17:08,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1208305333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:17:08,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:17:08,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [4, 4, 4] total 39 [2022-11-16 16:17:08,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454914071] [2022-11-16 16:17:08,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:17:08,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 16:17:08,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:17:08,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 16:17:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 16:17:08,049 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 25 states have internal predecessors, (31), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 16:17:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:17:10,050 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2022-11-16 16:17:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 16:17:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 25 states have internal predecessors, (31), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 60 [2022-11-16 16:17:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:17:10,052 INFO L225 Difference]: With dead ends: 107 [2022-11-16 16:17:10,052 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 16:17:10,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 131 SyntacticMatches, 13 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 154.7s TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 16:17:10,053 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 46 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:17:10,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 246 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 375 Invalid, 0 Unknown, 377 Unchecked, 1.9s Time] [2022-11-16 16:17:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 16:17:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-11-16 16:17:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 53 states have internal predecessors, (53), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 16:17:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2022-11-16 16:17:10,098 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 60 [2022-11-16 16:17:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:17:10,098 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2022-11-16 16:17:10,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 25 states have internal predecessors, (31), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 16:17:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2022-11-16 16:17:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 16:17:10,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:17:10,099 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:17:10,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 16:17:10,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 16:17:10,306 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 16:17:10,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:17:10,306 INFO L85 PathProgramCache]: Analyzing trace with hash 197733830, now seen corresponding path program 1 times [2022-11-16 16:17:10,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:17:10,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294569701] [2022-11-16 16:17:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:17:10,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:17:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:17:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:17:10,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:17:10,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294569701] [2022-11-16 16:17:10,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294569701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:17:10,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936802710] [2022-11-16 16:17:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:17:10,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:17:10,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:17:10,429 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:17:10,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 16:17:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:17:10,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:17:10,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:17:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:17:10,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:17:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 16:17:10,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936802710] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:17:10,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [297794282] [2022-11-16 16:17:10,735 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2022-11-16 16:17:10,735 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:17:10,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:17:10,736 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:17:10,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:17:11,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:11,700 INFO L321 Elim1Store]: treesize reduction 378, result has 33.5 percent of original size [2022-11-16 16:17:11,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 24 select indices, 24 select index equivalence classes, 255 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 42 case distinctions, treesize of input 127 treesize of output 277 [2022-11-16 16:17:11,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:17:11,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:11,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 22 select indices, 22 select index equivalence classes, 254 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 182 [2022-11-16 16:17:11,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:11,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 68 select indices, 68 select index equivalence classes, 133 disjoint index pairs (out of 2278 index pairs), introduced 68 new quantified variables, introduced 0 case distinctions, treesize of input 488 treesize of output 688 [2022-11-16 16:17:11,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:17:12,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:17:12,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:12,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 69 select indices, 69 select index equivalence classes, 133 disjoint index pairs (out of 2346 index pairs), introduced 69 new quantified variables, introduced 0 case distinctions, treesize of input 495 treesize of output 691 [2022-11-16 16:17:12,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:17:13,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:13,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:14,454 INFO L321 Elim1Store]: treesize reduction 388, result has 34.8 percent of original size [2022-11-16 16:17:14,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 25 select indices, 25 select index equivalence classes, 278 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 45 case distinctions, treesize of input 144 treesize of output 306 [2022-11-16 16:17:14,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:14,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:14,611 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 16:17:14,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 69 select indices, 69 select index equivalence classes, 156 disjoint index pairs (out of 2346 index pairs), introduced 69 new quantified variables, introduced 1 case distinctions, treesize of input 502 treesize of output 705 [2022-11-16 16:17:14,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:14,759 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 16:17:14,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 23 select indices, 23 select index equivalence classes, 277 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 190 [2022-11-16 16:17:14,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:17:14,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:17:16,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:17:16,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:16,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:16,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:16,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:17:16,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:17:16,759 INFO L321 Elim1Store]: treesize reduction 492, result has 20.3 percent of original size [2022-11-16 16:17:16,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 70 select indices, 70 select index equivalence classes, 110 disjoint index pairs (out of 2415 index pairs), introduced 70 new quantified variables, introduced 153 case distinctions, treesize of input 1871 treesize of output 1802 [2022-11-16 16:17:19,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-16 16:17:25,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:17:29,405 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsTrue with input of size 386 for LOIs [2022-11-16 16:17:29,642 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 97 for LOIs [2022-11-16 16:17:29,682 INFO L197 IcfgInterpreter]: Interpreting procedure globalReturnsFalse with input of size 407 for LOIs [2022-11-16 16:17:29,930 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 309 for LOIs [2022-11-16 16:17:29,979 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:18:07,082 WARN L233 SmtUtils]: Spent 26.56s on a formula simplification. DAG size of input: 407 DAG size of output: 387 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:18:35,320 WARN L233 SmtUtils]: Spent 28.02s on a formula simplification. DAG size of input: 409 DAG size of output: 388 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:19:00,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [297794282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:19:00,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:19:00,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 41 [2022-11-16 16:19:00,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271018444] [2022-11-16 16:19:00,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:19:00,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 16:19:00,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:19:00,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 16:19:00,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 16:19:00,576 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 34 states, 23 states have (on average 1.434782608695652) internal successors, (33), 26 states have internal predecessors, (33), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 16:19:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:19:16,315 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-11-16 16:19:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 16:19:16,316 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 23 states have (on average 1.434782608695652) internal successors, (33), 26 states have internal predecessors, (33), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 62 [2022-11-16 16:19:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:19:16,316 INFO L225 Difference]: With dead ends: 81 [2022-11-16 16:19:16,317 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 16:19:16,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 142 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 104.8s TimeCoverageRelationStatistics Valid=223, Invalid=1939, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 16:19:16,319 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 229 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:19:16,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 83 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 364 Invalid, 0 Unknown, 229 Unchecked, 1.5s Time] [2022-11-16 16:19:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 16:19:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 16:19:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:19:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 16:19:16,321 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2022-11-16 16:19:16,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:19:16,321 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 16:19:16,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 23 states have (on average 1.434782608695652) internal successors, (33), 26 states have internal predecessors, (33), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 16:19:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 16:19:16,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 16:19:16,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-16 16:19:16,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-16 16:19:16,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-16 16:19:16,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-16 16:19:16,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-16 16:19:16,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-16 16:19:16,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-16 16:19:16,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-16 16:19:16,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 16:19:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dbb120-0166-447a-95f1-a8ac56e2444c/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:19:16,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 16:20:00,751 WARN L233 SmtUtils]: Spent 43.24s on a formula simplification. DAG size of input: 477 DAG size of output: 419 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 16:20:32,975 WARN L233 SmtUtils]: Spent 26.16s on a formula simplification. DAG size of input: 499 DAG size of output: 422 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 16:20:57,160 WARN L233 SmtUtils]: Spent 21.90s on a formula simplification. DAG size of input: 646 DAG size of output: 1 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 16:21:39,464 WARN L233 SmtUtils]: Spent 41.29s on a formula simplification. DAG size of input: 494 DAG size of output: 436 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 16:21:46,326 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 551 DAG size of output: 1 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 16:22:28,546 WARN L233 SmtUtils]: Spent 39.21s on a formula simplification. DAG size of input: 493 DAG size of output: 435 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)